./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7 --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 bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:11:34,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:11:34,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:11:34,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:11:34,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:11:34,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:11:34,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:11:34,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:11:34,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:11:34,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:11:34,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:11:34,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:11:34,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:11:34,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:11:34,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:11:34,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:11:34,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:11:34,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:11:34,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:11:34,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:11:34,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:11:34,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:11:34,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:11:34,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:11:34,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:11:34,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:11:34,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:11:34,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:11:34,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:11:34,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:11:34,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:11:34,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:11:34,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:11:34,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:11:34,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:11:34,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:11:34,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:11:34,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:11:34,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:11:34,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:11:34,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:11:34,539 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:11:34,585 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:11:34,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:11:34,588 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:11:34,588 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:11:34,592 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:11:34,592 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:11:34,593 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:11:34,593 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:11:34,593 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:11:34,593 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:11:34,593 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:11:34,594 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:11:34,594 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:11:34,594 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:11:34,594 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:11:34,595 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:11:34,595 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:11:34,595 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:11:34,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:11:34,596 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:11:34,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:11:34,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:11:34,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:11:34,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:11:34,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:11:34,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:11:34,598 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:11:34,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:11:34,598 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:11:34,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:11:34,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:11:34,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:11:34,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:11:34,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:11:34,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:11:34,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:11:34,602 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:11:34,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:11:34,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:11:34,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:11:34,602 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:11:34,603 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e [2021-11-25 19:11:34,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:11:34,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:11:34,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:11:34,895 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:11:34,896 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:11:34,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2021-11-25 19:11:34,973 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/data/2b58489dc/c9b92eb84e454701aefd8656fd2d1659/FLAG2826bdb38 [2021-11-25 19:11:35,414 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:11:35,417 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2021-11-25 19:11:35,429 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/data/2b58489dc/c9b92eb84e454701aefd8656fd2d1659/FLAG2826bdb38 [2021-11-25 19:11:35,771 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/data/2b58489dc/c9b92eb84e454701aefd8656fd2d1659 [2021-11-25 19:11:35,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:11:35,774 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:11:35,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:11:35,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:11:35,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:11:35,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:11:35" (1/1) ... [2021-11-25 19:11:35,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25c3d9a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:35, skipping insertion in model container [2021-11-25 19:11:35,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:11:35" (1/1) ... [2021-11-25 19:11:35,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:11:35,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:11:35,988 WARN L230 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_4a944ceb-1c6b-4ff0-8216-351c0a42556f/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2021-11-25 19:11:36,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:11:36,033 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:11:36,046 WARN L230 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_4a944ceb-1c6b-4ff0-8216-351c0a42556f/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2021-11-25 19:11:36,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:11:36,069 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:11:36,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:36 WrapperNode [2021-11-25 19:11:36,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:11:36,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:11:36,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:11:36,071 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:11:36,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:36" (1/1) ... [2021-11-25 19:11:36,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:36" (1/1) ... [2021-11-25 19:11:36,112 INFO L137 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2021-11-25 19:11:36,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:11:36,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:11:36,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:11:36,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:11:36,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:36" (1/1) ... [2021-11-25 19:11:36,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:36" (1/1) ... [2021-11-25 19:11:36,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:36" (1/1) ... [2021-11-25 19:11:36,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:36" (1/1) ... [2021-11-25 19:11:36,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:36" (1/1) ... [2021-11-25 19:11:36,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:36" (1/1) ... [2021-11-25 19:11:36,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:36" (1/1) ... [2021-11-25 19:11:36,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:11:36,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:11:36,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:11:36,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:11:36,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:36" (1/1) ... [2021-11-25 19:11:36,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:11:36,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:11:36,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:11:36,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:11:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:11:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:11:36,244 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:11:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:11:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:11:36,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:11:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 19:11:36,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 19:11:36,306 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:11:36,308 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:11:36,464 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:11:36,493 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:11:36,493 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 19:11:36,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:11:36 BoogieIcfgContainer [2021-11-25 19:11:36,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:11:36,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:11:36,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:11:36,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:11:36,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:11:35" (1/3) ... [2021-11-25 19:11:36,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdfc05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:11:36, skipping insertion in model container [2021-11-25 19:11:36,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:36" (2/3) ... [2021-11-25 19:11:36,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdfc05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:11:36, skipping insertion in model container [2021-11-25 19:11:36,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:11:36" (3/3) ... [2021-11-25 19:11:36,512 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2021-11-25 19:11:36,518 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:11:36,518 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:11:36,568 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:11:36,576 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:11:36,576 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:11:36,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-25 19:11:36,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-25 19:11:36,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:36,600 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:36,600 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:36,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:36,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1539547475, now seen corresponding path program 1 times [2021-11-25 19:11:36,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:36,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167545231] [2021-11-25 19:11:36,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:36,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:11:36,836 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:36,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167545231] [2021-11-25 19:11:36,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167545231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:36,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:11:36,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:11:36,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890711257] [2021-11-25 19:11:36,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:36,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:11:36,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:36,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:11:36,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:11:36,874 INFO L87 Difference]: Start difference. First operand has 30 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:11:36,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:36,906 INFO L93 Difference]: Finished difference Result 51 states and 79 transitions. [2021-11-25 19:11:36,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:11:36,909 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 20 [2021-11-25 19:11:36,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:36,917 INFO L225 Difference]: With dead ends: 51 [2021-11-25 19:11:36,917 INFO L226 Difference]: Without dead ends: 28 [2021-11-25 19:11:36,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:11:36,924 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:36,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:11:36,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-25 19:11:36,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-25 19:11:36,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 19:11:36,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2021-11-25 19:11:36,964 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 20 [2021-11-25 19:11:36,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:36,966 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2021-11-25 19:11:36,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:11:36,966 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2021-11-25 19:11:36,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 19:11:36,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:36,968 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:36,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:11:36,969 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:36,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:36,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1863391506, now seen corresponding path program 1 times [2021-11-25 19:11:36,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:36,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972161562] [2021-11-25 19:11:36,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:36,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:36,991 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:11:36,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950816547] [2021-11-25 19:11:36,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:36,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:36,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:11:36,994 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:11:37,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:11:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:37,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:11:37,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:11:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:11:37,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:11:37,282 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:37,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972161562] [2021-11-25 19:11:37,287 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:11:37,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950816547] [2021-11-25 19:11:37,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950816547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:37,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:11:37,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:11:37,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78663012] [2021-11-25 19:11:37,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:37,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:11:37,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:37,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:11:37,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:11:37,295 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:11:37,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:37,381 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2021-11-25 19:11:37,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:11:37,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 21 [2021-11-25 19:11:37,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:37,384 INFO L225 Difference]: With dead ends: 47 [2021-11-25 19:11:37,384 INFO L226 Difference]: Without dead ends: 40 [2021-11-25 19:11:37,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:11:37,387 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 29 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:37,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 95 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:11:37,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-25 19:11:37,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 30. [2021-11-25 19:11:37,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 19:11:37,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2021-11-25 19:11:37,401 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 21 [2021-11-25 19:11:37,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:37,401 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2021-11-25 19:11:37,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:11:37,402 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2021-11-25 19:11:37,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 19:11:37,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:37,403 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:37,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-25 19:11:37,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-25 19:11:37,632 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:37,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:37,633 INFO L85 PathProgramCache]: Analyzing trace with hash -73319670, now seen corresponding path program 1 times [2021-11-25 19:11:37,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:37,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054719939] [2021-11-25 19:11:37,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:37,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:37,657 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:11:37,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [69819324] [2021-11-25 19:11:37,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:37,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:37,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:11:37,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:11:37,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:11:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:37,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 19:11:37,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:11:38,102 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:11:38,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:11:38,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:11:38,365 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:38,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054719939] [2021-11-25 19:11:38,366 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:11:38,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69819324] [2021-11-25 19:11:38,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69819324] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 19:11:38,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:11:38,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 13 [2021-11-25 19:11:38,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393012566] [2021-11-25 19:11:38,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:38,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:11:38,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:38,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:11:38,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:11:38,374 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:11:38,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:38,494 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2021-11-25 19:11:38,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:11:38,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2021-11-25 19:11:38,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:38,501 INFO L225 Difference]: With dead ends: 46 [2021-11-25 19:11:38,501 INFO L226 Difference]: Without dead ends: 44 [2021-11-25 19:11:38,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-11-25 19:11:38,506 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 27 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:38,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 146 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:11:38,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-25 19:11:38,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2021-11-25 19:11:38,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-25 19:11:38,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2021-11-25 19:11:38,528 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 24 [2021-11-25 19:11:38,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:38,529 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2021-11-25 19:11:38,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:11:38,530 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2021-11-25 19:11:38,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-25 19:11:38,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:38,531 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:38,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-25 19:11:38,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-25 19:11:38,748 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:38,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:38,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1101454984, now seen corresponding path program 1 times [2021-11-25 19:11:38,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:38,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431293828] [2021-11-25 19:11:38,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:38,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:38,768 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:11:38,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446774610] [2021-11-25 19:11:38,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:38,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:38,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:11:38,784 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:11:38,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:11:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:38,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 19:11:38,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:11:38,950 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:11:38,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:11:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:11:39,062 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:39,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431293828] [2021-11-25 19:11:39,068 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:11:39,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446774610] [2021-11-25 19:11:39,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446774610] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:11:39,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [795566672] [2021-11-25 19:11:39,095 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-11-25 19:11:39,095 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:11:39,101 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:11:39,108 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:11:39,109 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:11:40,116 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2021-11-25 19:11:40,140 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:11:41,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [795566672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:41,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:11:41,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [7, 7] total 18 [2021-11-25 19:11:41,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267508965] [2021-11-25 19:11:41,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:41,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 19:11:41,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:41,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 19:11:41,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2021-11-25 19:11:41,924 INFO L87 Difference]: Start difference. First operand 43 states and 57 transitions. Second operand has 13 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:11:42,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:42,244 INFO L93 Difference]: Finished difference Result 71 states and 97 transitions. [2021-11-25 19:11:42,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 19:11:42,247 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2021-11-25 19:11:42,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:42,249 INFO L225 Difference]: With dead ends: 71 [2021-11-25 19:11:42,249 INFO L226 Difference]: Without dead ends: 64 [2021-11-25 19:11:42,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2021-11-25 19:11:42,250 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 63 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:42,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 48 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:11:42,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-25 19:11:42,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 50. [2021-11-25 19:11:42,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 34 states have internal predecessors, (41), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-25 19:11:42,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2021-11-25 19:11:42,286 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 26 [2021-11-25 19:11:42,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:42,287 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2021-11-25 19:11:42,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:11:42,288 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2021-11-25 19:11:42,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-25 19:11:42,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:42,290 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:42,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-25 19:11:42,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:42,516 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:42,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:42,517 INFO L85 PathProgramCache]: Analyzing trace with hash -156943002, now seen corresponding path program 1 times [2021-11-25 19:11:42,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:42,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116113955] [2021-11-25 19:11:42,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:42,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:42,539 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:11:42,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116778375] [2021-11-25 19:11:42,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:42,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:42,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:11:42,543 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:11:42,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:11:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:42,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 19:11:42,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:11:42,881 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:11:42,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:11:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:11:43,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:43,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116113955] [2021-11-25 19:11:43,075 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:11:43,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116778375] [2021-11-25 19:11:43,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116778375] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 19:11:43,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:11:43,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 13 [2021-11-25 19:11:43,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735142758] [2021-11-25 19:11:43,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:43,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:11:43,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:43,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:11:43,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:11:43,078 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:43,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:43,168 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2021-11-25 19:11:43,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:11:43,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 29 [2021-11-25 19:11:43,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:43,172 INFO L225 Difference]: With dead ends: 58 [2021-11-25 19:11:43,172 INFO L226 Difference]: Without dead ends: 56 [2021-11-25 19:11:43,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-25 19:11:43,177 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 21 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:43,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 149 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:11:43,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-25 19:11:43,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2021-11-25 19:11:43,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 37 states have internal predecessors, (44), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-25 19:11:43,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2021-11-25 19:11:43,210 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 29 [2021-11-25 19:11:43,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:43,210 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2021-11-25 19:11:43,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:43,211 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2021-11-25 19:11:43,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-25 19:11:43,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:43,212 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:43,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:11:43,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:43,430 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:43,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:43,430 INFO L85 PathProgramCache]: Analyzing trace with hash 187338980, now seen corresponding path program 1 times [2021-11-25 19:11:43,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:43,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131246317] [2021-11-25 19:11:43,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:43,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:43,444 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:11:43,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1666938800] [2021-11-25 19:11:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:43,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:43,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:11:43,446 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:11:43,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:11:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:43,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-25 19:11:43,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:11:43,643 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:11:43,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:11:43,841 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:11:43,841 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:43,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131246317] [2021-11-25 19:11:43,842 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:11:43,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666938800] [2021-11-25 19:11:43,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666938800] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:11:43,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1444633424] [2021-11-25 19:11:43,846 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-25 19:11:43,847 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:11:43,847 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:11:43,847 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:11:43,848 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:11:44,959 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 43 for LOIs [2021-11-25 19:11:44,970 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2021-11-25 19:11:44,988 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:11:46,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1444633424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:46,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:11:46,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [6, 6] total 22 [2021-11-25 19:11:46,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6837197] [2021-11-25 19:11:46,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:46,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 19:11:46,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:46,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 19:11:46,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2021-11-25 19:11:46,880 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 9 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:11:47,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:47,626 INFO L93 Difference]: Finished difference Result 115 states and 159 transitions. [2021-11-25 19:11:47,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 19:11:47,636 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 9 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 29 [2021-11-25 19:11:47,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:47,639 INFO L225 Difference]: With dead ends: 115 [2021-11-25 19:11:47,639 INFO L226 Difference]: Without dead ends: 113 [2021-11-25 19:11:47,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2021-11-25 19:11:47,641 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 55 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:47,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 64 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:11:47,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-25 19:11:47,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 108. [2021-11-25 19:11:47,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 63 states have (on average 1.253968253968254) internal successors, (79), 64 states have internal predecessors, (79), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-11-25 19:11:47,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 152 transitions. [2021-11-25 19:11:47,683 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 152 transitions. Word has length 29 [2021-11-25 19:11:47,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:47,683 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 152 transitions. [2021-11-25 19:11:47,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 9 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:11:47,684 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 152 transitions. [2021-11-25 19:11:47,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-25 19:11:47,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:47,686 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:47,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:11:47,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 19:11:47,904 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:47,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:47,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1193022788, now seen corresponding path program 1 times [2021-11-25 19:11:47,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:47,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339600128] [2021-11-25 19:11:47,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:47,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:47,918 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:11:47,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [351020151] [2021-11-25 19:11:47,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:47,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:47,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:11:47,944 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:11:47,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:11:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:48,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-25 19:11:48,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:11:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 19:11:48,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:11:49,869 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 19:11:49,870 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:49,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339600128] [2021-11-25 19:11:49,870 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:11:49,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351020151] [2021-11-25 19:11:49,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351020151] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:11:49,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [621261478] [2021-11-25 19:11:49,873 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2021-11-25 19:11:49,873 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:11:49,874 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:11:49,874 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:11:49,874 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:12:02,474 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 10 for LOIs [2021-11-25 19:12:02,481 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2021-11-25 19:12:02,498 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:12:15,468 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2179#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-25 19:12:15,468 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:12:15,469 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:12:15,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 23 [2021-11-25 19:12:15,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427211145] [2021-11-25 19:12:15,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:12:15,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-25 19:12:15,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:12:15,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-25 19:12:15,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1683, Unknown=0, NotChecked=0, Total=1892 [2021-11-25 19:12:15,471 INFO L87 Difference]: Start difference. First operand 108 states and 152 transitions. Second operand has 23 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-25 19:12:27,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:27,096 INFO L93 Difference]: Finished difference Result 262 states and 375 transitions. [2021-11-25 19:12:27,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-25 19:12:27,096 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 51 [2021-11-25 19:12:27,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:27,100 INFO L225 Difference]: With dead ends: 262 [2021-11-25 19:12:27,101 INFO L226 Difference]: Without dead ends: 210 [2021-11-25 19:12:27,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 102 SyntacticMatches, 7 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1786 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=697, Invalid=4853, Unknown=0, NotChecked=0, Total=5550 [2021-11-25 19:12:27,105 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 114 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:27,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 402 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-11-25 19:12:27,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-25 19:12:27,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 153. [2021-11-25 19:12:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 98 states have (on average 1.2244897959183674) internal successors, (120), 99 states have internal predecessors, (120), 45 states have call successors, (45), 9 states have call predecessors, (45), 9 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-11-25 19:12:27,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 209 transitions. [2021-11-25 19:12:27,169 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 209 transitions. Word has length 51 [2021-11-25 19:12:27,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:27,170 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 209 transitions. [2021-11-25 19:12:27,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-25 19:12:27,170 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 209 transitions. [2021-11-25 19:12:27,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-25 19:12:27,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:27,174 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:27,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:27,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:27,396 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:27,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:27,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1047855047, now seen corresponding path program 1 times [2021-11-25 19:12:27,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:12:27,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723355692] [2021-11-25 19:12:27,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:27,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:12:27,420 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:12:27,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416275847] [2021-11-25 19:12:27,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:27,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:27,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:27,424 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:12:27,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 19:12:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:27,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-25 19:12:27,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:27,777 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-25 19:12:27,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-25 19:12:27,977 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:27,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723355692] [2021-11-25 19:12:27,977 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:12:27,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416275847] [2021-11-25 19:12:27,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416275847] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 19:12:27,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:12:27,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 13 [2021-11-25 19:12:27,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113900712] [2021-11-25 19:12:27,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:27,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:12:27,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:12:27,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:12:27,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:12:27,980 INFO L87 Difference]: Start difference. First operand 153 states and 209 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 19:12:28,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:28,074 INFO L93 Difference]: Finished difference Result 173 states and 228 transitions. [2021-11-25 19:12:28,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:12:28,074 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 61 [2021-11-25 19:12:28,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:28,077 INFO L225 Difference]: With dead ends: 173 [2021-11-25 19:12:28,077 INFO L226 Difference]: Without dead ends: 171 [2021-11-25 19:12:28,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-25 19:12:28,080 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 13 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:28,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 110 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:12:28,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-25 19:12:28,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 165. [2021-11-25 19:12:28,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 107 states have (on average 1.205607476635514) internal successors, (129), 108 states have internal predecessors, (129), 45 states have call successors, (45), 12 states have call predecessors, (45), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-11-25 19:12:28,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 218 transitions. [2021-11-25 19:12:28,139 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 218 transitions. Word has length 61 [2021-11-25 19:12:28,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:28,140 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 218 transitions. [2021-11-25 19:12:28,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 19:12:28,141 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 218 transitions. [2021-11-25 19:12:28,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-25 19:12:28,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:28,143 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:28,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:28,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-25 19:12:28,356 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:28,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:28,356 INFO L85 PathProgramCache]: Analyzing trace with hash -94425734, now seen corresponding path program 1 times [2021-11-25 19:12:28,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:12:28,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847944296] [2021-11-25 19:12:28,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:28,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:12:28,379 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:12:28,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336827384] [2021-11-25 19:12:28,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:28,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:28,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:28,386 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:12:28,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 19:12:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:28,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:12:28,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:28,630 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 19:12:28,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:28,866 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 19:12:28,866 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:28,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847944296] [2021-11-25 19:12:28,866 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:12:28,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336827384] [2021-11-25 19:12:28,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336827384] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:28,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [38227815] [2021-11-25 19:12:28,871 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2021-11-25 19:12:28,871 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:12:28,872 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:12:28,872 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:12:28,872 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:12:40,668 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 53 for LOIs [2021-11-25 19:12:40,678 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2021-11-25 19:12:40,693 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:12:43,085 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4157#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-25 19:12:43,085 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:12:43,086 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:12:43,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-11-25 19:12:43,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946784499] [2021-11-25 19:12:43,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:12:43,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 19:12:43,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:12:43,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 19:12:43,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 19:12:43,088 INFO L87 Difference]: Start difference. First operand 165 states and 218 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-11-25 19:12:43,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:43,452 INFO L93 Difference]: Finished difference Result 259 states and 353 transitions. [2021-11-25 19:12:43,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 19:12:43,453 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 59 [2021-11-25 19:12:43,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:43,456 INFO L225 Difference]: With dead ends: 259 [2021-11-25 19:12:43,457 INFO L226 Difference]: Without dead ends: 169 [2021-11-25 19:12:43,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 138 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=202, Invalid=1358, Unknown=0, NotChecked=0, Total=1560 [2021-11-25 19:12:43,459 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 62 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:43,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 286 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:12:43,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-25 19:12:43,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 144. [2021-11-25 19:12:43,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 90 states have (on average 1.1333333333333333) internal successors, (102), 91 states have internal predecessors, (102), 41 states have call successors, (41), 12 states have call predecessors, (41), 12 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-25 19:12:43,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 183 transitions. [2021-11-25 19:12:43,503 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 183 transitions. Word has length 59 [2021-11-25 19:12:43,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:43,503 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 183 transitions. [2021-11-25 19:12:43,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-11-25 19:12:43,503 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 183 transitions. [2021-11-25 19:12:43,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-25 19:12:43,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:43,505 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:43,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:43,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:43,715 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:43,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:43,715 INFO L85 PathProgramCache]: Analyzing trace with hash 255729376, now seen corresponding path program 2 times [2021-11-25 19:12:43,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:12:43,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804818626] [2021-11-25 19:12:43,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:43,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:12:43,725 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:12:43,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311940937] [2021-11-25 19:12:43,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:12:43,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:43,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:43,726 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:12:43,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 19:12:43,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 19:12:43,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:12:43,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:12:43,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:43,877 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-25 19:12:43,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:12:43,877 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:43,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804818626] [2021-11-25 19:12:43,877 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:12:43,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311940937] [2021-11-25 19:12:43,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311940937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:43,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:43,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:12:43,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514151560] [2021-11-25 19:12:43,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:43,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:12:43,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:12:43,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:12:43,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:12:43,879 INFO L87 Difference]: Start difference. First operand 144 states and 183 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-25 19:12:43,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:43,955 INFO L93 Difference]: Finished difference Result 169 states and 216 transitions. [2021-11-25 19:12:43,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:12:43,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 64 [2021-11-25 19:12:43,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:43,957 INFO L225 Difference]: With dead ends: 169 [2021-11-25 19:12:43,957 INFO L226 Difference]: Without dead ends: 167 [2021-11-25 19:12:43,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:12:43,958 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:43,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 115 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:12:43,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-25 19:12:44,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 164. [2021-11-25 19:12:44,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 100 states have (on average 1.14) internal successors, (114), 101 states have internal predecessors, (114), 49 states have call successors, (49), 14 states have call predecessors, (49), 14 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-25 19:12:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2021-11-25 19:12:44,005 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 64 [2021-11-25 19:12:44,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:44,006 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2021-11-25 19:12:44,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-25 19:12:44,006 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2021-11-25 19:12:44,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 19:12:44,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:44,008 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:44,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:44,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 19:12:44,216 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:44,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:44,216 INFO L85 PathProgramCache]: Analyzing trace with hash 148795157, now seen corresponding path program 1 times [2021-11-25 19:12:44,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:12:44,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163589237] [2021-11-25 19:12:44,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:44,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:12:44,225 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:12:44,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449623237] [2021-11-25 19:12:44,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:44,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:44,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:44,232 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:12:44,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 19:12:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:44,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 19:12:44,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:44,404 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 23 proven. 22 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-25 19:12:44,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 23 proven. 22 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-25 19:12:44,572 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:44,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163589237] [2021-11-25 19:12:44,572 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:12:44,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449623237] [2021-11-25 19:12:44,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449623237] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:44,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [878450309] [2021-11-25 19:12:44,575 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2021-11-25 19:12:44,576 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:12:44,576 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:12:44,576 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:12:44,576 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:12:53,317 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2021-11-25 19:12:53,327 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2021-11-25 19:12:53,340 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:12:55,873 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5969#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-25 19:12:55,873 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:12:55,873 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:12:55,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-11-25 19:12:55,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392028707] [2021-11-25 19:12:55,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:12:55,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 19:12:55,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:12:55,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 19:12:55,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2021-11-25 19:12:55,875 INFO L87 Difference]: Start difference. First operand 164 states and 211 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 19:12:55,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:55,973 INFO L93 Difference]: Finished difference Result 178 states and 222 transitions. [2021-11-25 19:12:55,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:12:55,973 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 76 [2021-11-25 19:12:55,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:55,975 INFO L225 Difference]: With dead ends: 178 [2021-11-25 19:12:55,975 INFO L226 Difference]: Without dead ends: 176 [2021-11-25 19:12:55,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 191 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2021-11-25 19:12:55,977 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 19 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:55,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 138 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:12:55,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-25 19:12:56,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-11-25 19:12:56,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 109 states have (on average 1.128440366972477) internal successors, (123), 110 states have internal predecessors, (123), 49 states have call successors, (49), 17 states have call predecessors, (49), 17 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-25 19:12:56,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 220 transitions. [2021-11-25 19:12:56,025 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 220 transitions. Word has length 76 [2021-11-25 19:12:56,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:56,026 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 220 transitions. [2021-11-25 19:12:56,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 19:12:56,026 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 220 transitions. [2021-11-25 19:12:56,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 19:12:56,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:56,027 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:56,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:56,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:56,228 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:56,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:56,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1021259487, now seen corresponding path program 2 times [2021-11-25 19:12:56,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:12:56,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816968163] [2021-11-25 19:12:56,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:56,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:12:56,238 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:12:56,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932773358] [2021-11-25 19:12:56,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:12:56,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:56,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:56,245 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:12:56,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 19:12:56,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 19:12:56,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:12:56,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-25 19:12:56,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:56,773 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-11-25 19:12:56,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-25 19:12:57,003 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:57,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816968163] [2021-11-25 19:12:57,004 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:12:57,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932773358] [2021-11-25 19:12:57,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932773358] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:57,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2105339562] [2021-11-25 19:12:57,007 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2021-11-25 19:12:57,007 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:12:57,008 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:12:57,008 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:12:57,009 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:13:05,020 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2021-11-25 19:13:05,030 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2021-11-25 19:13:05,045 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:13:09,523 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6984#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-25 19:13:09,524 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:13:09,524 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:13:09,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 10 [2021-11-25 19:13:09,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602768146] [2021-11-25 19:13:09,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:13:09,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 19:13:09,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:13:09,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 19:13:09,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2021-11-25 19:13:09,526 INFO L87 Difference]: Start difference. First operand 176 states and 220 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 6 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-25 19:13:09,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:09,750 INFO L93 Difference]: Finished difference Result 221 states and 276 transitions. [2021-11-25 19:13:09,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:13:09,751 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 6 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 76 [2021-11-25 19:13:09,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:09,755 INFO L225 Difference]: With dead ends: 221 [2021-11-25 19:13:09,755 INFO L226 Difference]: Without dead ends: 219 [2021-11-25 19:13:09,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 189 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2021-11-25 19:13:09,757 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 47 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:09,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 242 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:13:09,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-25 19:13:09,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 195. [2021-11-25 19:13:09,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 124 states have (on average 1.1129032258064515) internal successors, (138), 126 states have internal predecessors, (138), 50 states have call successors, (50), 20 states have call predecessors, (50), 20 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2021-11-25 19:13:09,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 237 transitions. [2021-11-25 19:13:09,824 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 237 transitions. Word has length 76 [2021-11-25 19:13:09,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:09,825 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 237 transitions. [2021-11-25 19:13:09,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 6 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-25 19:13:09,825 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 237 transitions. [2021-11-25 19:13:09,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-25 19:13:09,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:09,832 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:09,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:10,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-25 19:13:10,048 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:10,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:10,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1897496259, now seen corresponding path program 1 times [2021-11-25 19:13:10,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:10,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307544192] [2021-11-25 19:13:10,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:10,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:10,058 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:13:10,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742859786] [2021-11-25 19:13:10,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:10,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:10,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:10,062 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:13:10,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-25 19:13:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:10,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 85 conjunts are in the unsatisfiable core [2021-11-25 19:13:10,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 51 proven. 32 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-25 19:13:11,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:12,697 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 61 proven. 17 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-25 19:13:12,698 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:12,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307544192] [2021-11-25 19:13:12,698 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:13:12,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742859786] [2021-11-25 19:13:12,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742859786] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:12,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [884585970] [2021-11-25 19:13:12,700 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2021-11-25 19:13:12,700 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:13:12,701 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:13:12,701 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:13:12,701 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:13:22,059 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 10 for LOIs [2021-11-25 19:13:22,066 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2021-11-25 19:13:22,078 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:13:40,811 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8119#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-25 19:13:40,811 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:13:40,811 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:13:40,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 27 [2021-11-25 19:13:40,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589945623] [2021-11-25 19:13:40,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:13:40,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-25 19:13:40,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:13:40,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-25 19:13:40,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-11-25 19:13:40,814 INFO L87 Difference]: Start difference. First operand 195 states and 237 transitions. Second operand has 27 states, 22 states have (on average 2.409090909090909) internal successors, (53), 23 states have internal predecessors, (53), 11 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) [2021-11-25 19:13:47,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 19:13:54,237 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 19:13:59,313 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 19:14:05,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 19:14:10,788 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 19:14:12,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 19:14:17,871 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 19:14:26,325 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 19:14:32,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 19:14:34,756 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 19:14:35,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 19:14:39,814 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 19:14:41,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 19:14:44,859 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 19:14:47,895 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 19:14:53,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 19:14:56,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:56,467 INFO L93 Difference]: Finished difference Result 413 states and 583 transitions. [2021-11-25 19:14:56,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-11-25 19:14:56,468 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 22 states have (on average 2.409090909090909) internal successors, (53), 23 states have internal predecessors, (53), 11 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) Word has length 78 [2021-11-25 19:14:56,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:56,471 INFO L225 Difference]: With dead ends: 413 [2021-11-25 19:14:56,472 INFO L226 Difference]: Without dead ends: 409 [2021-11-25 19:14:56,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 189 SyntacticMatches, 16 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4298 ImplicationChecksByTransitivity, 47.8s TimeCoverageRelationStatistics Valid=1489, Invalid=10501, Unknown=0, NotChecked=0, Total=11990 [2021-11-25 19:14:56,477 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 207 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 591 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 2539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:56,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 652 Invalid, 2539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 1935 Invalid, 13 Unknown, 0 Unchecked, 47.6s Time] [2021-11-25 19:14:56,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-11-25 19:14:56,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 281. [2021-11-25 19:14:56,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 171 states have (on average 1.1578947368421053) internal successors, (198), 173 states have internal predecessors, (198), 86 states have call successors, (86), 23 states have call predecessors, (86), 23 states have return successors, (85), 84 states have call predecessors, (85), 85 states have call successors, (85) [2021-11-25 19:14:56,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 369 transitions. [2021-11-25 19:14:56,606 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 369 transitions. Word has length 78 [2021-11-25 19:14:56,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:56,607 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 369 transitions. [2021-11-25 19:14:56,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 22 states have (on average 2.409090909090909) internal successors, (53), 23 states have internal predecessors, (53), 11 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) [2021-11-25 19:14:56,607 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 369 transitions. [2021-11-25 19:14:56,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-25 19:14:56,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:56,609 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:56,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-25 19:14:56,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-25 19:14:56,836 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:56,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:56,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1729932497, now seen corresponding path program 1 times [2021-11-25 19:14:56,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:14:56,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424120677] [2021-11-25 19:14:56,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:56,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:14:56,845 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:14:56,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1850911235] [2021-11-25 19:14:56,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:56,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:14:56,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:14:56,846 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:14:56,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-25 19:14:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:56,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:14:56,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:57,142 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 90 proven. 9 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-11-25 19:14:57,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:57,460 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 28 proven. 11 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-11-25 19:14:57,460 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:14:57,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424120677] [2021-11-25 19:14:57,460 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:14:57,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850911235] [2021-11-25 19:14:57,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850911235] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:57,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [691090331] [2021-11-25 19:14:57,462 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2021-11-25 19:14:57,463 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:14:57,463 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:14:57,463 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:14:57,464 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:15:02,098 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2021-11-25 19:15:02,150 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2021-11-25 19:15:02,162 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:15:04,028 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9868#(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 [2021-11-25 19:15:04,028 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:15:04,029 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:15:04,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-11-25 19:15:04,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308471889] [2021-11-25 19:15:04,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:15:04,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 19:15:04,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:15:04,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 19:15:04,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=914, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 19:15:04,030 INFO L87 Difference]: Start difference. First operand 281 states and 369 transitions. Second operand has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 16 states have internal predecessors, (37), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2021-11-25 19:15:04,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:04,525 INFO L93 Difference]: Finished difference Result 446 states and 602 transitions. [2021-11-25 19:15:04,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 19:15:04,526 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 16 states have internal predecessors, (37), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) Word has length 81 [2021-11-25 19:15:04,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:04,529 INFO L225 Difference]: With dead ends: 446 [2021-11-25 19:15:04,529 INFO L226 Difference]: Without dead ends: 303 [2021-11-25 19:15:04,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 198 SyntacticMatches, 12 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=286, Invalid=1784, Unknown=0, NotChecked=0, Total=2070 [2021-11-25 19:15:04,532 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 72 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:04,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 340 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:15:04,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-25 19:15:04,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 294. [2021-11-25 19:15:04,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 174 states have (on average 1.160919540229885) internal successors, (202), 176 states have internal predecessors, (202), 98 states have call successors, (98), 21 states have call predecessors, (98), 21 states have return successors, (97), 96 states have call predecessors, (97), 97 states have call successors, (97) [2021-11-25 19:15:04,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 397 transitions. [2021-11-25 19:15:04,635 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 397 transitions. Word has length 81 [2021-11-25 19:15:04,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:04,636 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 397 transitions. [2021-11-25 19:15:04,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 16 states have internal predecessors, (37), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2021-11-25 19:15:04,636 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 397 transitions. [2021-11-25 19:15:04,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-25 19:15:04,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:04,638 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:04,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-25 19:15:04,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:15:04,848 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:15:04,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:04,848 INFO L85 PathProgramCache]: Analyzing trace with hash 144664241, now seen corresponding path program 3 times [2021-11-25 19:15:04,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:15:04,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988594514] [2021-11-25 19:15:04,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:04,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:15:04,855 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:15:04,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17841293] [2021-11-25 19:15:04,856 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:15:04,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:15:04,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:15:04,857 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:15:04,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-25 19:15:04,898 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:15:04,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:15:04,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 19:15:04,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 58 proven. 13 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-25 19:15:05,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 28 proven. 13 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-25 19:15:05,687 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:15:05,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988594514] [2021-11-25 19:15:05,687 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:15:05,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17841293] [2021-11-25 19:15:05,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17841293] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:15:05,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [386562414] [2021-11-25 19:15:05,690 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2021-11-25 19:15:05,690 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:15:05,690 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:15:05,690 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:15:05,691 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:15:12,965 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2021-11-25 19:15:12,972 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2021-11-25 19:15:12,985 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:15:15,822 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11560#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-25 19:15:15,822 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:15:15,822 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:15:15,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 18 [2021-11-25 19:15:15,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708782580] [2021-11-25 19:15:15,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:15:15,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 19:15:15,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:15:15,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 19:15:15,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1052, Unknown=0, NotChecked=0, Total=1190 [2021-11-25 19:15:15,823 INFO L87 Difference]: Start difference. First operand 294 states and 397 transitions. Second operand has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) [2021-11-25 19:15:16,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:16,643 INFO L93 Difference]: Finished difference Result 405 states and 551 transitions. [2021-11-25 19:15:16,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-25 19:15:16,644 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) Word has length 81 [2021-11-25 19:15:16,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:16,647 INFO L225 Difference]: With dead ends: 405 [2021-11-25 19:15:16,647 INFO L226 Difference]: Without dead ends: 265 [2021-11-25 19:15:16,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 198 SyntacticMatches, 14 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1068 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=319, Invalid=2333, Unknown=0, NotChecked=0, Total=2652 [2021-11-25 19:15:16,649 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 79 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:16,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 344 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 196 Invalid, 0 Unknown, 56 Unchecked, 0.3s Time] [2021-11-25 19:15:16,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-25 19:15:16,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2021-11-25 19:15:16,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 152 states have (on average 1.1513157894736843) internal successors, (175), 154 states have internal predecessors, (175), 94 states have call successors, (94), 18 states have call predecessors, (94), 18 states have return successors, (93), 92 states have call predecessors, (93), 93 states have call successors, (93) [2021-11-25 19:15:16,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 362 transitions. [2021-11-25 19:15:16,776 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 362 transitions. Word has length 81 [2021-11-25 19:15:16,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:16,777 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 362 transitions. [2021-11-25 19:15:16,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) [2021-11-25 19:15:16,777 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 362 transitions. [2021-11-25 19:15:16,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-25 19:15:16,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:16,779 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:16,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:16,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-25 19:15:16,997 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:15:16,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:16,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1455689018, now seen corresponding path program 4 times [2021-11-25 19:15:16,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:15:16,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975193732] [2021-11-25 19:15:16,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:16,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:15:17,007 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:15:17,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103189232] [2021-11-25 19:15:17,016 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:15:17,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:15:17,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:15:17,018 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:15:17,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-25 19:15:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:17,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 19:15:17,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:17,230 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 41 proven. 34 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-11-25 19:15:17,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:17,435 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 41 proven. 34 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-11-25 19:15:17,435 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:15:17,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975193732] [2021-11-25 19:15:17,435 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:15:17,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103189232] [2021-11-25 19:15:17,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103189232] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:15:17,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1075732062] [2021-11-25 19:15:17,437 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2021-11-25 19:15:17,437 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:15:17,438 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:15:17,438 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:15:17,438 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:15:24,673 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2021-11-25 19:15:24,685 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2021-11-25 19:15:24,698 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:15:27,255 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13290#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-25 19:15:27,255 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:15:27,255 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:15:27,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-11-25 19:15:27,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132463667] [2021-11-25 19:15:27,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:15:27,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 19:15:27,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:15:27,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 19:15:27,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2021-11-25 19:15:27,257 INFO L87 Difference]: Start difference. First operand 265 states and 362 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-25 19:15:27,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:27,489 INFO L93 Difference]: Finished difference Result 279 states and 373 transitions. [2021-11-25 19:15:27,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:15:27,490 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 103 [2021-11-25 19:15:27,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:27,493 INFO L225 Difference]: With dead ends: 279 [2021-11-25 19:15:27,493 INFO L226 Difference]: Without dead ends: 277 [2021-11-25 19:15:27,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 266 SyntacticMatches, 17 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2021-11-25 19:15:27,494 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 17 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:27,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 124 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:15:27,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-11-25 19:15:27,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2021-11-25 19:15:27,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 161 states have (on average 1.1428571428571428) internal successors, (184), 163 states have internal predecessors, (184), 94 states have call successors, (94), 21 states have call predecessors, (94), 21 states have return successors, (93), 92 states have call predecessors, (93), 93 states have call successors, (93) [2021-11-25 19:15:27,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 371 transitions. [2021-11-25 19:15:27,646 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 371 transitions. Word has length 103 [2021-11-25 19:15:27,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:27,647 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 371 transitions. [2021-11-25 19:15:27,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-25 19:15:27,648 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 371 transitions. [2021-11-25 19:15:27,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-25 19:15:27,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:27,651 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:27,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:27,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-25 19:15:27,877 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:15:27,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:27,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1799971000, now seen corresponding path program 5 times [2021-11-25 19:15:27,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:15:27,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746036053] [2021-11-25 19:15:27,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:27,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:15:27,910 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:15:27,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039655136] [2021-11-25 19:15:27,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:15:27,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:15:27,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:15:27,912 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:15:27,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-25 19:15:27,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 19:15:27,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:15:27,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-25 19:15:27,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:28,719 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2021-11-25 19:15:28,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 26 proven. 21 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-11-25 19:15:29,009 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:15:29,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746036053] [2021-11-25 19:15:29,009 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:15:29,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039655136] [2021-11-25 19:15:29,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039655136] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:15:29,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1337450769] [2021-11-25 19:15:29,011 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2021-11-25 19:15:29,011 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:15:29,012 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:15:29,012 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:15:29,012 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:15:36,697 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2021-11-25 19:15:36,705 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2021-11-25 19:15:36,720 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:15:41,016 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14809#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-25 19:15:41,016 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:15:41,016 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:15:41,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-11-25 19:15:41,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962459153] [2021-11-25 19:15:41,017 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:15:41,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 19:15:41,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:15:41,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 19:15:41,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=926, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 19:15:41,019 INFO L87 Difference]: Start difference. First operand 277 states and 371 transitions. Second operand has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 6 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-25 19:15:42,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:42,925 INFO L93 Difference]: Finished difference Result 410 states and 561 transitions. [2021-11-25 19:15:42,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 19:15:42,926 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 6 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 103 [2021-11-25 19:15:42,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:42,929 INFO L225 Difference]: With dead ends: 410 [2021-11-25 19:15:42,929 INFO L226 Difference]: Without dead ends: 408 [2021-11-25 19:15:42,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 259 SyntacticMatches, 17 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1018 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=266, Invalid=1804, Unknown=0, NotChecked=0, Total=2070 [2021-11-25 19:15:42,931 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 139 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:42,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 355 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 19:15:42,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-11-25 19:15:43,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 295. [2021-11-25 19:15:43,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 176 states have (on average 1.1363636363636365) internal successors, (200), 178 states have internal predecessors, (200), 94 states have call successors, (94), 24 states have call predecessors, (94), 24 states have return successors, (93), 92 states have call predecessors, (93), 93 states have call successors, (93) [2021-11-25 19:15:43,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 387 transitions. [2021-11-25 19:15:43,049 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 387 transitions. Word has length 103 [2021-11-25 19:15:43,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:43,050 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 387 transitions. [2021-11-25 19:15:43,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 6 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-25 19:15:43,050 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 387 transitions. [2021-11-25 19:15:43,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-25 19:15:43,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:43,052 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:43,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:43,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-25 19:15:43,266 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:15:43,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:43,266 INFO L85 PathProgramCache]: Analyzing trace with hash -327458570, now seen corresponding path program 6 times [2021-11-25 19:15:43,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:15:43,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499881647] [2021-11-25 19:15:43,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:43,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:15:43,284 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:15:43,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738349113] [2021-11-25 19:15:43,284 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:15:43,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:15:43,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:15:43,285 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:15:43,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-25 19:15:43,334 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:15:43,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:15:43,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 19:15:43,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:43,601 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 137 proven. 24 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2021-11-25 19:15:43,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2021-11-25 19:15:44,085 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:15:44,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499881647] [2021-11-25 19:15:44,085 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:15:44,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738349113] [2021-11-25 19:15:44,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738349113] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:15:44,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1748735066] [2021-11-25 19:15:44,087 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2021-11-25 19:15:44,088 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:15:44,088 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:15:44,088 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:15:44,088 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:15:51,554 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2021-11-25 19:15:51,563 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2021-11-25 19:15:51,579 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:15:54,700 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16612#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-25 19:15:54,700 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:15:54,700 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:15:54,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 19 [2021-11-25 19:15:54,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247388153] [2021-11-25 19:15:54,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:15:54,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-25 19:15:54,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:15:54,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-25 19:15:54,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1111, Unknown=0, NotChecked=0, Total=1260 [2021-11-25 19:15:54,703 INFO L87 Difference]: Start difference. First operand 295 states and 387 transitions. Second operand has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 17 states have internal predecessors, (51), 10 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 10 states have call predecessors, (35), 10 states have call successors, (35) [2021-11-25 19:15:55,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:55,252 INFO L93 Difference]: Finished difference Result 384 states and 494 transitions. [2021-11-25 19:15:55,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 19:15:55,253 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 17 states have internal predecessors, (51), 10 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 10 states have call predecessors, (35), 10 states have call successors, (35) Word has length 108 [2021-11-25 19:15:55,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:55,255 INFO L225 Difference]: With dead ends: 384 [2021-11-25 19:15:55,255 INFO L226 Difference]: Without dead ends: 199 [2021-11-25 19:15:55,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 270 SyntacticMatches, 18 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1102 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=328, Invalid=1928, Unknown=0, NotChecked=0, Total=2256 [2021-11-25 19:15:55,257 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 47 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:55,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 433 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:15:55,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-25 19:15:55,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 179. [2021-11-25 19:15:55,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 115 states have (on average 1.0260869565217392) internal successors, (118), 117 states have internal predecessors, (118), 43 states have call successors, (43), 20 states have call predecessors, (43), 20 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) [2021-11-25 19:15:55,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 204 transitions. [2021-11-25 19:15:55,328 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 204 transitions. Word has length 108 [2021-11-25 19:15:55,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:55,329 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 204 transitions. [2021-11-25 19:15:55,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 17 states have internal predecessors, (51), 10 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 10 states have call predecessors, (35), 10 states have call successors, (35) [2021-11-25 19:15:55,329 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 204 transitions. [2021-11-25 19:15:55,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-25 19:15:55,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:55,331 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:15:55,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:55,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-25 19:15:55,547 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:15:55,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:55,548 INFO L85 PathProgramCache]: Analyzing trace with hash -686262770, now seen corresponding path program 7 times [2021-11-25 19:15:55,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:15:55,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183002318] [2021-11-25 19:15:55,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:55,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:15:55,558 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:15:55,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694533771] [2021-11-25 19:15:55,558 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:15:55,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:15:55,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:15:55,559 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:15:55,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-25 19:15:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:55,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-25 19:15:55,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 73 proven. 52 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2021-11-25 19:15:56,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:15:57,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:15:57,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183002318] [2021-11-25 19:15:57,246 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:15:57,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694533771] [2021-11-25 19:15:57,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694533771] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:15:57,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [702058351] [2021-11-25 19:15:57,248 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2021-11-25 19:15:57,248 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:15:57,249 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:15:57,249 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:15:57,249 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:16:05,287 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2021-11-25 19:16:05,295 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2021-11-25 19:16:05,309 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:16:08,976 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18293#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-25 19:16:08,976 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:16:08,976 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:16:08,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-11-25 19:16:08,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127336510] [2021-11-25 19:16:08,976 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-25 19:16:08,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 19:16:08,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:16:08,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 19:16:08,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2021-11-25 19:16:08,978 INFO L87 Difference]: Start difference. First operand 179 states and 204 transitions. Second operand has 16 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2021-11-25 19:16:09,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:09,996 INFO L93 Difference]: Finished difference Result 231 states and 266 transitions. [2021-11-25 19:16:09,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 19:16:09,997 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 133 [2021-11-25 19:16:09,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:09,998 INFO L225 Difference]: With dead ends: 231 [2021-11-25 19:16:09,998 INFO L226 Difference]: Without dead ends: 116 [2021-11-25 19:16:10,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 320 SyntacticMatches, 21 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1674 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=395, Invalid=2797, Unknown=0, NotChecked=0, Total=3192 [2021-11-25 19:16:10,002 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 41 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:10,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 471 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:16:10,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-25 19:16:10,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-11-25 19:16:10,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 34 states have call successors, (34), 11 states have call predecessors, (34), 11 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-25 19:16:10,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 139 transitions. [2021-11-25 19:16:10,064 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 139 transitions. Word has length 133 [2021-11-25 19:16:10,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:10,064 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 139 transitions. [2021-11-25 19:16:10,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2021-11-25 19:16:10,065 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 139 transitions. [2021-11-25 19:16:10,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-25 19:16:10,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:10,067 INFO L514 BasicCegarLoop]: trace histogram [22, 21, 21, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:16:10,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-25 19:16:10,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:16:10,292 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:16:10,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:10,292 INFO L85 PathProgramCache]: Analyzing trace with hash -681225452, now seen corresponding path program 8 times [2021-11-25 19:16:10,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:16:10,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552861319] [2021-11-25 19:16:10,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:10,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:16:10,305 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:16:10,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5855573] [2021-11-25 19:16:10,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:16:10,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:16:10,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:16:10,308 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:16:10,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-25 19:16:10,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-25 19:16:10,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:16:10,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 19:16:10,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:16:10,797 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 165 proven. 5 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2021-11-25 19:16:10,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:16:11,250 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 63 proven. 29 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2021-11-25 19:16:11,251 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:16:11,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552861319] [2021-11-25 19:16:11,251 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:16:11,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5855573] [2021-11-25 19:16:11,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5855573] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:16:11,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [992691764] [2021-11-25 19:16:11,253 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2021-11-25 19:16:11,253 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:16:11,254 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:16:11,254 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:16:11,254 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:16:18,622 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2021-11-25 19:16:18,631 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2021-11-25 19:16:18,645 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:16:21,528 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19742#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-25 19:16:21,528 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:16:21,528 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:16:21,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-11-25 19:16:21,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648029037] [2021-11-25 19:16:21,528 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:16:21,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 19:16:21,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:16:21,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 19:16:21,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2021-11-25 19:16:21,530 INFO L87 Difference]: Start difference. First operand 116 states and 139 transitions. Second operand has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 13 states have internal predecessors, (37), 7 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-25 19:16:21,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:21,790 INFO L93 Difference]: Finished difference Result 120 states and 142 transitions. [2021-11-25 19:16:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 19:16:21,791 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 13 states have internal predecessors, (37), 7 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) Word has length 147 [2021-11-25 19:16:21,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:21,791 INFO L225 Difference]: With dead ends: 120 [2021-11-25 19:16:21,791 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 19:16:21,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 382 SyntacticMatches, 29 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=179, Invalid=1153, Unknown=0, NotChecked=0, Total=1332 [2021-11-25 19:16:21,793 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 18 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:21,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 213 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:16:21,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 19:16:21,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 19:16:21,795 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) [2021-11-25 19:16:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 19:16:21,795 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 147 [2021-11-25 19:16:21,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:21,795 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 19:16:21,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 13 states have internal predecessors, (37), 7 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-25 19:16:21,796 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 19:16:21,796 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 19:16:21,799 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:16:21,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-25 19:16:22,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:16:22,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 19:16:27,976 WARN L227 SmtUtils]: Spent 5.94s on a formula simplification. DAG size of input: 320 DAG size of output: 314 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-25 19:16:34,677 WARN L227 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 317 DAG size of output: 305 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-25 19:16:40,201 WARN L227 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 312 DAG size of output: 306 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-25 19:16:47,460 WARN L227 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 317 DAG size of output: 305 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-25 19:16:54,108 WARN L227 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 318 DAG size of output: 312 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-25 19:17:15,254 WARN L227 SmtUtils]: Spent 21.14s on a formula simplification. DAG size of input: 314 DAG size of output: 152 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-25 19:17:27,193 WARN L227 SmtUtils]: Spent 11.88s on a formula simplification. DAG size of input: 305 DAG size of output: 146 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-25 19:17:41,157 WARN L227 SmtUtils]: Spent 13.96s on a formula simplification. DAG size of input: 306 DAG size of output: 146 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-25 19:17:53,002 WARN L227 SmtUtils]: Spent 11.84s on a formula simplification. DAG size of input: 305 DAG size of output: 146 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-25 19:18:01,601 WARN L227 SmtUtils]: Spent 6.79s on a formula simplification. DAG size of input: 295 DAG size of output: 125 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-25 19:18:08,455 WARN L227 SmtUtils]: Spent 6.85s on a formula simplification. DAG size of input: 211 DAG size of output: 118 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-25 19:18:25,303 WARN L227 SmtUtils]: Spent 16.84s on a formula simplification. DAG size of input: 312 DAG size of output: 152 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-25 19:18:25,366 INFO L854 garLoopResultBuilder]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse24 (select |#memory_int| 1)) (.cse1 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse23 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (let ((.cse2 (<= (div |ULTIMATE.start_main_~b~0#1| (- 2)) 0)) (.cse8 (or (not (= |ULTIMATE.start_main_~b~0#1| 0)) (= (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~a~0#1|) .cse23))) (.cse9 (<= (div |ULTIMATE.start_main_~c~0#1| (- 2)) 0)) (.cse11 (< |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|)) (.cse21 (not (= (ite (and .cse1 (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0))) (.cse6 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse14 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse0 (= (select |#length| 3) 12)) (.cse19 (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0)))) (.cse20 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= 11 (select |#length| 2))) (.cse4 (= 2 (select |#length| 1))) (.cse5 (= (select |#valid| 3) 1)) (.cse7 (= (select |#valid| 1) 1)) (.cse22 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse10 (= (select |#valid| 0) 0)) (.cse12 (= (select |#valid| 2) 1)) (.cse13 (= |#NULL.offset| 0)) (.cse15 (= (select .cse24 0) 48)) (.cse16 (= (select .cse24 1) 0)) (.cse17 (< 0 |#StackHeapBarrier|)) (.cse18 (= |#NULL.base| 0))) (or (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) .cse1 .cse2 (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 (< (* 2 |ULTIMATE.start_main_~c~0#1|) 2) .cse16 .cse17 .cse18) (and .cse0 .cse19 (= |ULTIMATE.start_main_~p~0#1| 0) .cse2 .cse20 .cse21 .cse3 .cse4 .cse5 (<= |ULTIMATE.start_main_~c~0#1| 2) .cse7 .cse22 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse15 (<= |ULTIMATE.start_main_~x~0#1| 2) .cse16 .cse17 .cse18 (< |ULTIMATE.start_main_~b~0#1| (div (+ 2 (* |ULTIMATE.start_main_~b~0#1| (- 1))) 2))) (and (<= |ULTIMATE.start_main_~a~0#1| 2) (or (and .cse0 .cse19 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) .cse21 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3 .cse4 .cse5 .cse6 (= |ULTIMATE.start_main_~q~0#1| 0) .cse7 .cse10 .cse12 .cse13 .cse14 .cse15 .cse16 (= |ULTIMATE.start_main_~s~0#1| 1) .cse17 .cse18) (and .cse0 (= |ULTIMATE.start_main_~temp~0#1| 0) .cse19 (= (+ |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~p~0#1|)) 1) (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) .cse20 .cse3 .cse4 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) .cse5 (= |ULTIMATE.start_main_~k~0#1| 0) .cse7 .cse22 .cse10 .cse12 .cse13 .cse15 (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~a~0#1|) .cse16 (= (+ |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~temp~0#1|) .cse17 .cse18)) (= |ULTIMATE.start_main_~a~0#1| .cse23))))) [2021-11-25 19:18:25,366 INFO L854 garLoopResultBuilder]: At program point L35-3(lines 35 73) the Hoare annotation is: (let ((.cse2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (let ((.cse4 (+ |ULTIMATE.start_main_~b~0#1| .cse2 .cse3)) (.cse5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1|)) (.cse6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|)) (.cse7 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) (<= 1 |ULTIMATE.start_main_~y~0#1|) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= (+ .cse0 .cse1 |ULTIMATE.start_main_~a~0#1|) (+ .cse2 .cse3)) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (or (= |ULTIMATE.start_main_~b~0#1| 0) (< |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (= (select |#valid| 1) 1) (or (<= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|) (not (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|)) (= .cse4 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~d~0#1|) .cse0 .cse1 .cse5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~d~0#1|) .cse6))) (= (select |#valid| 0) 0) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) 1 0) 0)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse7 0) 48) (or (not (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (<= |ULTIMATE.start_main_~c~0#1| 0) (= .cse4 (+ (* 2 .cse0) .cse5 .cse6 (* 2 .cse1))) (not (= |ULTIMATE.start_main_~b~0#1| (+ .cse0 .cse1)))) (= (select .cse7 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0)))) [2021-11-25 19:18:25,367 INFO L854 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse44 (select |#memory_int| 1))) (let ((.cse3 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse0 (= (select |#length| 3) 12)) (.cse2 (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0)))) (.cse6 (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0))) (.cse8 (= 11 (select |#length| 2))) (.cse9 (= 2 (select |#length| 1))) (.cse10 (= (select |#valid| 3) 1)) (.cse15 (= (select |#valid| 1) 1)) (.cse35 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse16 (= (select |#valid| 0) 0)) (.cse18 (= (select |#valid| 2) 1)) (.cse20 (= (select .cse44 0) 48)) (.cse22 (= (select .cse44 1) 0)) (.cse24 (< 0 |#StackHeapBarrier|)) (.cse25 (= |#NULL.base| 0))) (let ((.cse21 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse39 (and .cse0 (= |ULTIMATE.start_main_~temp~0#1| 0) .cse2 (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse6 (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse8 .cse9 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= |ULTIMATE.start_main_~q~0#1| 1) .cse15 .cse35 .cse16 .cse18 .cse20 .cse22 .cse24 .cse25)) (.cse40 (not (= (ite .cse3 1 0) 0))) (.cse41 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse42 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse43 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse37 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse38 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (let ((.cse4 (< |ULTIMATE.start_main_~b~0#1| 2)) (.cse17 (< |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|)) (.cse32 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse31 (= (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1|)) .cse38)) (.cse34 (or .cse39 (and .cse0 .cse2 .cse40 .cse6 .cse41 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~r~0#1| 0) .cse42 .cse15 .cse16 .cse18 .cse43 .cse20 .cse22 .cse37 .cse24 .cse25))) (.cse1 (not (= |ULTIMATE.start_main_~b~0#1| 0))) (.cse28 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse11 (= |ULTIMATE.start_main_~b~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|)))) (.cse14 (<= |ULTIMATE.start_main_~c~0#1| 2)) (.cse19 (= |#NULL.offset| 0)) (.cse29 (< |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse33 (< |ULTIMATE.start_main_~b~0#1| (div (+ 2 (* |ULTIMATE.start_main_~b~0#1| (- 1))) 2))) (.cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse7 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse26 (or .cse39 (and .cse0 .cse40 (= |ULTIMATE.start_main_~p~0#1| 1) .cse41 .cse8 .cse9 .cse10 .cse42 .cse15 .cse16 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) .cse21) 1 0) 0)) .cse18 .cse43 .cse20 .cse22 .cse37 .cse24 .cse25))) (.cse27 (<= |#NULL.offset| 0)) (.cse12 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse36 (* |ULTIMATE.start_main_~v~0#1| (- 1))) (.cse30 (<= 0 |#NULL.offset|)) (.cse23 (= |ULTIMATE.start_main_~a~0#1| .cse38))) (or (let ((.cse13 (* 4 |ULTIMATE.start_main_~b~0#1|))) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (<= .cse13 |ULTIMATE.start_main_~c~0#1|) .cse14 .cse15 (<= |ULTIMATE.start_main_~v~0#1| .cse13) .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25)) (and .cse7 .cse26 .cse27 .cse28 .cse14 .cse17 .cse29 .cse30 .cse23 .cse31) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse14 .cse15 .cse32 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse33) (and .cse27 .cse34 .cse35 .cse32 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|) .cse30 (= 2 |ULTIMATE.start_main_~d~0#1|) .cse23 .cse31) (and .cse5 .cse7 .cse27 .cse34 .cse12 (<= (div .cse36 (- 2)) (div |ULTIMATE.start_main_~c~0#1| 2)) .cse30 .cse21 .cse23 .cse37) (and .cse0 .cse1 .cse2 .cse3 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse28 .cse11 .cse12 .cse14 .cse15 .cse16 .cse18 .cse19 .cse20 .cse29 .cse21 .cse22 .cse23 .cse24 .cse25 .cse33) (and .cse5 .cse7 .cse26 .cse27 .cse12 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (<= (div (+ .cse36 |ULTIMATE.start_main_~c~0#1|) (- 2)) 0) .cse30 .cse23 .cse37)))))) [2021-11-25 19:18:25,367 INFO L858 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-11-25 19:18:25,367 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 19:18:25,367 INFO L854 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) 1 0) 0)) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-25 19:18:25,367 INFO L854 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) 1 0) 0)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-25 19:18:25,368 INFO L858 garLoopResultBuilder]: For program point L53(lines 49 59) no Hoare annotation was computed. [2021-11-25 19:18:25,368 INFO L854 garLoopResultBuilder]: At program point L49-2(lines 49 59) the Hoare annotation is: (let ((.cse40 (select |#memory_int| 1))) (let ((.cse3 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse0 (= (select |#length| 3) 12)) (.cse2 (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0)))) (.cse6 (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0))) (.cse8 (= 11 (select |#length| 2))) (.cse9 (= 2 (select |#length| 1))) (.cse10 (= (select |#valid| 3) 1)) (.cse15 (= (select |#valid| 1) 1)) (.cse16 (= (select |#valid| 0) 0)) (.cse18 (= (select |#valid| 2) 1)) (.cse20 (= (select .cse40 0) 48)) (.cse22 (= (select .cse40 1) 0)) (.cse24 (< 0 |#StackHeapBarrier|)) (.cse25 (= |#NULL.base| 0))) (let ((.cse34 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (.cse35 (and .cse0 (= |ULTIMATE.start_main_~temp~0#1| 0) .cse2 (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse6 (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse8 .cse9 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= |ULTIMATE.start_main_~q~0#1| 1) .cse15 (= |ULTIMATE.start_main_~r~0#1| 1) .cse16 .cse18 .cse20 .cse22 .cse24 .cse25)) (.cse36 (not (= (ite .cse3 1 0) 0))) (.cse37 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse38 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse21 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse39 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse33 (= |ULTIMATE.start_main_~s~0#1| 1))) (let ((.cse1 (not (= |ULTIMATE.start_main_~b~0#1| 0))) (.cse4 (< |ULTIMATE.start_main_~b~0#1| 2)) (.cse11 (= |ULTIMATE.start_main_~b~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|)))) (.cse14 (<= |ULTIMATE.start_main_~c~0#1| 2)) (.cse19 (= |#NULL.offset| 0)) (.cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse7 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse26 (or .cse35 (and .cse0 .cse36 (= |ULTIMATE.start_main_~p~0#1| 1) .cse37 .cse8 .cse9 .cse10 .cse38 .cse15 .cse16 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) .cse21) 1 0) 0)) .cse18 .cse39 .cse20 .cse22 .cse33 .cse24 .cse25))) (.cse32 (* |ULTIMATE.start_main_~v~0#1| (- 1))) (.cse27 (<= |#NULL.offset| 0)) (.cse31 (or .cse35 (and .cse0 .cse2 .cse36 .cse6 .cse37 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~r~0#1| 0) .cse38 .cse15 .cse16 .cse18 .cse39 .cse20 .cse22 .cse33 .cse24 .cse25))) (.cse12 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse30 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse17 (< |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|)) (.cse28 (<= 0 |#NULL.offset|)) (.cse23 (= |ULTIMATE.start_main_~a~0#1| .cse34)) (.cse29 (= (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1|)) .cse34))) (or (let ((.cse13 (* 4 |ULTIMATE.start_main_~b~0#1|))) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (<= .cse13 |ULTIMATE.start_main_~c~0#1|) .cse14 .cse15 (<= |ULTIMATE.start_main_~v~0#1| .cse13) .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25)) (and .cse7 .cse26 .cse27 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse14 .cse17 (< |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~c~0#1|) .cse28 .cse23 .cse29) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse14 .cse15 .cse30 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 (< |ULTIMATE.start_main_~b~0#1| (div (+ 2 (* |ULTIMATE.start_main_~b~0#1| (- 1))) 2))) (and .cse5 .cse7 .cse27 .cse31 .cse12 (<= (div .cse32 (- 2)) (div |ULTIMATE.start_main_~c~0#1| 2)) .cse28 .cse21 .cse23 .cse33) (and .cse5 .cse7 .cse26 .cse27 .cse12 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (<= (div (+ .cse32 |ULTIMATE.start_main_~c~0#1|) (- 2)) 0) .cse28 .cse23 .cse33) (and .cse27 .cse31 .cse12 .cse30 .cse17 .cse28 .cse21 (= 2 |ULTIMATE.start_main_~d~0#1|) .cse23 .cse29)))))) [2021-11-25 19:18:25,368 INFO L858 garLoopResultBuilder]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2021-11-25 19:18:25,369 INFO L861 garLoopResultBuilder]: At program point L74(line 74) the Hoare annotation is: true [2021-11-25 19:18:25,369 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 19:18:25,369 INFO L854 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-25 19:18:25,369 INFO L854 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse40 (select |#memory_int| 1))) (let ((.cse3 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse0 (= (select |#length| 3) 12)) (.cse2 (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0)))) (.cse6 (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0))) (.cse8 (= 11 (select |#length| 2))) (.cse9 (= 2 (select |#length| 1))) (.cse10 (= (select |#valid| 3) 1)) (.cse15 (= (select |#valid| 1) 1)) (.cse16 (= (select |#valid| 0) 0)) (.cse18 (= (select |#valid| 2) 1)) (.cse20 (= (select .cse40 0) 48)) (.cse22 (= (select .cse40 1) 0)) (.cse24 (< 0 |#StackHeapBarrier|)) (.cse25 (= |#NULL.base| 0))) (let ((.cse34 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (.cse35 (and .cse0 (= |ULTIMATE.start_main_~temp~0#1| 0) .cse2 (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse6 (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse8 .cse9 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= |ULTIMATE.start_main_~q~0#1| 1) .cse15 (= |ULTIMATE.start_main_~r~0#1| 1) .cse16 .cse18 .cse20 .cse22 .cse24 .cse25)) (.cse36 (not (= (ite .cse3 1 0) 0))) (.cse37 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse38 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse21 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse39 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse33 (= |ULTIMATE.start_main_~s~0#1| 1))) (let ((.cse1 (not (= |ULTIMATE.start_main_~b~0#1| 0))) (.cse4 (< |ULTIMATE.start_main_~b~0#1| 2)) (.cse11 (= |ULTIMATE.start_main_~b~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|)))) (.cse14 (<= |ULTIMATE.start_main_~c~0#1| 2)) (.cse19 (= |#NULL.offset| 0)) (.cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse7 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse26 (or .cse35 (and .cse0 .cse36 (= |ULTIMATE.start_main_~p~0#1| 1) .cse37 .cse8 .cse9 .cse10 .cse38 .cse15 .cse16 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) .cse21) 1 0) 0)) .cse18 .cse39 .cse20 .cse22 .cse33 .cse24 .cse25))) (.cse32 (* |ULTIMATE.start_main_~v~0#1| (- 1))) (.cse27 (<= |#NULL.offset| 0)) (.cse31 (or .cse35 (and .cse0 .cse2 .cse36 .cse6 .cse37 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~r~0#1| 0) .cse38 .cse15 .cse16 .cse18 .cse39 .cse20 .cse22 .cse33 .cse24 .cse25))) (.cse12 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse30 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse17 (< |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|)) (.cse28 (<= 0 |#NULL.offset|)) (.cse23 (= |ULTIMATE.start_main_~a~0#1| .cse34)) (.cse29 (= (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1|)) .cse34))) (or (let ((.cse13 (* 4 |ULTIMATE.start_main_~b~0#1|))) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (<= .cse13 |ULTIMATE.start_main_~c~0#1|) .cse14 .cse15 (<= |ULTIMATE.start_main_~v~0#1| .cse13) .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25)) (and .cse7 .cse26 .cse27 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse14 .cse17 (< |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~c~0#1|) .cse28 .cse23 .cse29) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse14 .cse15 .cse30 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 (< |ULTIMATE.start_main_~b~0#1| (div (+ 2 (* |ULTIMATE.start_main_~b~0#1| (- 1))) 2))) (and .cse5 .cse7 .cse27 .cse31 .cse12 (<= (div .cse32 (- 2)) (div |ULTIMATE.start_main_~c~0#1| 2)) .cse28 .cse21 .cse23 .cse33) (and .cse5 .cse7 .cse26 .cse27 .cse12 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (<= (div (+ .cse32 |ULTIMATE.start_main_~c~0#1|) (- 2)) 0) .cse28 .cse23 .cse33) (and .cse27 .cse31 .cse12 .cse30 .cse17 .cse28 .cse21 (= 2 |ULTIMATE.start_main_~d~0#1|) .cse23 .cse29)))))) [2021-11-25 19:18:25,370 INFO L854 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (let ((.cse40 (select |#memory_int| 1))) (let ((.cse3 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse0 (= (select |#length| 3) 12)) (.cse2 (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0)))) (.cse6 (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0))) (.cse8 (= 11 (select |#length| 2))) (.cse9 (= 2 (select |#length| 1))) (.cse10 (= (select |#valid| 3) 1)) (.cse15 (= (select |#valid| 1) 1)) (.cse16 (= (select |#valid| 0) 0)) (.cse18 (= (select |#valid| 2) 1)) (.cse20 (= (select .cse40 0) 48)) (.cse22 (= (select .cse40 1) 0)) (.cse24 (< 0 |#StackHeapBarrier|)) (.cse25 (= |#NULL.base| 0))) (let ((.cse34 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (.cse35 (and .cse0 (= |ULTIMATE.start_main_~temp~0#1| 0) .cse2 (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse6 (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse8 .cse9 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= |ULTIMATE.start_main_~q~0#1| 1) .cse15 (= |ULTIMATE.start_main_~r~0#1| 1) .cse16 .cse18 .cse20 .cse22 .cse24 .cse25)) (.cse36 (not (= (ite .cse3 1 0) 0))) (.cse37 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse38 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse21 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse39 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse33 (= |ULTIMATE.start_main_~s~0#1| 1))) (let ((.cse1 (not (= |ULTIMATE.start_main_~b~0#1| 0))) (.cse4 (< |ULTIMATE.start_main_~b~0#1| 2)) (.cse11 (= |ULTIMATE.start_main_~b~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|)))) (.cse14 (<= |ULTIMATE.start_main_~c~0#1| 2)) (.cse19 (= |#NULL.offset| 0)) (.cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse7 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse26 (or .cse35 (and .cse0 .cse36 (= |ULTIMATE.start_main_~p~0#1| 1) .cse37 .cse8 .cse9 .cse10 .cse38 .cse15 .cse16 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) .cse21) 1 0) 0)) .cse18 .cse39 .cse20 .cse22 .cse33 .cse24 .cse25))) (.cse32 (* |ULTIMATE.start_main_~v~0#1| (- 1))) (.cse27 (<= |#NULL.offset| 0)) (.cse31 (or .cse35 (and .cse0 .cse2 .cse36 .cse6 .cse37 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~r~0#1| 0) .cse38 .cse15 .cse16 .cse18 .cse39 .cse20 .cse22 .cse33 .cse24 .cse25))) (.cse12 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse30 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse17 (< |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|)) (.cse28 (<= 0 |#NULL.offset|)) (.cse23 (= |ULTIMATE.start_main_~a~0#1| .cse34)) (.cse29 (= (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1|)) .cse34))) (or (let ((.cse13 (* 4 |ULTIMATE.start_main_~b~0#1|))) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (<= .cse13 |ULTIMATE.start_main_~c~0#1|) .cse14 .cse15 (<= |ULTIMATE.start_main_~v~0#1| .cse13) .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25)) (and .cse7 .cse26 .cse27 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse14 .cse17 (< |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~c~0#1|) .cse28 .cse23 .cse29) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse14 .cse15 .cse30 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 (< |ULTIMATE.start_main_~b~0#1| (div (+ 2 (* |ULTIMATE.start_main_~b~0#1| (- 1))) 2))) (and .cse5 .cse7 .cse27 .cse31 .cse12 (<= (div .cse32 (- 2)) (div |ULTIMATE.start_main_~c~0#1| 2)) .cse28 .cse21 .cse23 .cse33) (and .cse5 .cse7 .cse26 .cse27 .cse12 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (<= (div (+ .cse32 |ULTIMATE.start_main_~c~0#1|) (- 2)) 0) .cse28 .cse23 .cse33) (and .cse27 .cse31 .cse12 .cse30 .cse17 .cse28 .cse21 (= 2 |ULTIMATE.start_main_~d~0#1|) .cse23 .cse29)))))) [2021-11-25 19:18:25,370 INFO L854 garLoopResultBuilder]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse28 (select |#memory_int| 1)) (.cse26 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse27 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse29 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse30 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|))) (let ((.cse22 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse24 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse25 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse0 (= (select |#length| 3) 12)) (.cse21 (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0)))) (.cse1 (or (= (+ |ULTIMATE.start_main_~b~0#1| .cse26 .cse27) (+ .cse29 .cse30 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1|))) (not (= |ULTIMATE.start_main_~c~0#1| 0)))) (.cse23 (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0))) (.cse2 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse3 (= 11 (select |#length| 2))) (.cse4 (= 2 (select |#length| 1))) (.cse5 (= (select |#valid| 3) 1)) (.cse6 (= |ULTIMATE.start_main_~b~0#1| (+ .cse29 .cse30))) (.cse7 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse8 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse9 (= (select |#valid| 1) 1)) (.cse10 (= (select |#valid| 0) 0)) (.cse11 (= (select |#valid| 2) 1)) (.cse12 (= |#NULL.offset| 0)) (.cse13 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse14 (= (select .cse28 0) 48)) (.cse16 (= (select .cse28 1) 0)) (.cse17 (= |ULTIMATE.start_main_~a~0#1| (+ .cse26 .cse27))) (.cse18 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse19 (< 0 |#StackHeapBarrier|)) (.cse20 (= |#NULL.base| 0)) (.cse15 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~b~0#1|) .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse18 .cse19 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~x~0#1|) .cse20) (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) (or (and .cse0 (= |ULTIMATE.start_main_~temp~0#1| 0) .cse21 (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) .cse22 .cse23 (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3 .cse4 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse5 .cse24 .cse9 .cse25 .cse10 .cse11 .cse14 .cse16 .cse19 .cse20) (and .cse0 .cse21 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) .cse23 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3 .cse4 .cse5 .cse7 .cse8 .cse9 .cse10 .cse11 .cse13 .cse14 .cse16 .cse18 .cse19 .cse20)) (= |ULTIMATE.start_main_~k~0#1| 0) .cse12 .cse15 .cse17) (and (<= (div |ULTIMATE.start_main_~c~0#1| (- 2)) 0) (or (and .cse0 .cse21 .cse1 .cse22 .cse23 .cse3 .cse4 .cse5 .cse6 .cse24 (= |ULTIMATE.start_main_~s~0#1| 0) .cse9 .cse25 .cse10 (< |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) .cse11 .cse12 .cse14 .cse16 .cse17 .cse19 .cse20) (and .cse0 (<= (div (* |ULTIMATE.start_main_~v~0#1| (- 1)) (- 2)) |ULTIMATE.start_main_~b~0#1|) .cse21 .cse1 .cse23 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse16 .cse17 .cse18 .cse19 .cse20)) (< (* 2 |ULTIMATE.start_main_~c~0#1|) 2) .cse15)))) [2021-11-25 19:18:25,370 INFO L858 garLoopResultBuilder]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2021-11-25 19:18:25,370 INFO L858 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-11-25 19:18:25,371 INFO L854 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-25 19:18:25,371 INFO L858 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-11-25 19:18:25,373 INFO L854 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse44 (select |#memory_int| 1))) (let ((.cse3 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse0 (= (select |#length| 3) 12)) (.cse2 (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0)))) (.cse6 (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0))) (.cse8 (= 11 (select |#length| 2))) (.cse9 (= 2 (select |#length| 1))) (.cse10 (= (select |#valid| 3) 1)) (.cse15 (= (select |#valid| 1) 1)) (.cse35 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse16 (= (select |#valid| 0) 0)) (.cse18 (= (select |#valid| 2) 1)) (.cse20 (= (select .cse44 0) 48)) (.cse22 (= (select .cse44 1) 0)) (.cse24 (< 0 |#StackHeapBarrier|)) (.cse25 (= |#NULL.base| 0))) (let ((.cse21 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse39 (and .cse0 (= |ULTIMATE.start_main_~temp~0#1| 0) .cse2 (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse6 (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse8 .cse9 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= |ULTIMATE.start_main_~q~0#1| 1) .cse15 .cse35 .cse16 .cse18 .cse20 .cse22 .cse24 .cse25)) (.cse40 (not (= (ite .cse3 1 0) 0))) (.cse41 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse42 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse43 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse37 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse38 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (let ((.cse4 (< |ULTIMATE.start_main_~b~0#1| 2)) (.cse17 (< |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|)) (.cse32 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse31 (= (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1|)) .cse38)) (.cse34 (or .cse39 (and .cse0 .cse2 .cse40 .cse6 .cse41 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~r~0#1| 0) .cse42 .cse15 .cse16 .cse18 .cse43 .cse20 .cse22 .cse37 .cse24 .cse25))) (.cse1 (not (= |ULTIMATE.start_main_~b~0#1| 0))) (.cse28 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse11 (= |ULTIMATE.start_main_~b~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|)))) (.cse14 (<= |ULTIMATE.start_main_~c~0#1| 2)) (.cse19 (= |#NULL.offset| 0)) (.cse29 (< |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse33 (< |ULTIMATE.start_main_~b~0#1| (div (+ 2 (* |ULTIMATE.start_main_~b~0#1| (- 1))) 2))) (.cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse7 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse26 (or .cse39 (and .cse0 .cse40 (= |ULTIMATE.start_main_~p~0#1| 1) .cse41 .cse8 .cse9 .cse10 .cse42 .cse15 .cse16 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) .cse21) 1 0) 0)) .cse18 .cse43 .cse20 .cse22 .cse37 .cse24 .cse25))) (.cse27 (<= |#NULL.offset| 0)) (.cse12 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse36 (* |ULTIMATE.start_main_~v~0#1| (- 1))) (.cse30 (<= 0 |#NULL.offset|)) (.cse23 (= |ULTIMATE.start_main_~a~0#1| .cse38))) (or (let ((.cse13 (* 4 |ULTIMATE.start_main_~b~0#1|))) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (<= .cse13 |ULTIMATE.start_main_~c~0#1|) .cse14 .cse15 (<= |ULTIMATE.start_main_~v~0#1| .cse13) .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25)) (and .cse7 .cse26 .cse27 .cse28 .cse14 .cse17 .cse29 .cse30 .cse23 .cse31) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse14 .cse15 .cse32 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse33) (and .cse27 .cse34 .cse35 .cse32 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|) .cse30 (= 2 |ULTIMATE.start_main_~d~0#1|) .cse23 .cse31) (and .cse5 .cse7 .cse27 .cse34 .cse12 (<= (div .cse36 (- 2)) (div |ULTIMATE.start_main_~c~0#1| 2)) .cse30 .cse21 .cse23 .cse37) (and .cse0 .cse1 .cse2 .cse3 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse28 .cse11 .cse12 .cse14 .cse15 .cse16 .cse18 .cse19 .cse20 .cse29 .cse21 .cse22 .cse23 .cse24 .cse25 .cse33) (and .cse5 .cse7 .cse26 .cse27 .cse12 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (<= (div (+ .cse36 |ULTIMATE.start_main_~c~0#1|) (- 2)) 0) .cse30 .cse23 .cse37)))))) [2021-11-25 19:18:25,373 INFO L858 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2021-11-25 19:18:25,373 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2021-11-25 19:18:25,373 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2021-11-25 19:18:25,374 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2021-11-25 19:18:25,374 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-11-25 19:18:25,374 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-11-25 19:18:25,374 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2021-11-25 19:18:25,374 INFO L858 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2021-11-25 19:18:25,374 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-11-25 19:18:25,377 INFO L732 BasicCegarLoop]: Path program histogram: [8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:18:25,382 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:18:25,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:18:25 BoogieIcfgContainer [2021-11-25 19:18:25,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:18:25,486 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:18:25,486 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:18:25,486 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:18:25,487 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:11:36" (3/4) ... [2021-11-25 19:18:25,498 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 19:18:25,505 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-25 19:18:25,505 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-25 19:18:25,511 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-11-25 19:18:25,511 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-25 19:18:25,514 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-25 19:18:25,514 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 19:18:25,588 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 19:18:25,588 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:18:25,589 INFO L158 Benchmark]: Toolchain (without parser) took 409814.40ms. Allocated memory was 111.1MB in the beginning and 524.3MB in the end (delta: 413.1MB). Free memory was 71.4MB in the beginning and 318.9MB in the end (delta: -247.5MB). Peak memory consumption was 165.8MB. Max. memory is 16.1GB. [2021-11-25 19:18:25,593 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory is still 87.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:18:25,593 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.74ms. Allocated memory is still 111.1MB. Free memory was 71.1MB in the beginning and 85.7MB in the end (delta: -14.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 19:18:25,594 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.97ms. Allocated memory is still 111.1MB. Free memory was 85.7MB in the beginning and 84.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:18:25,596 INFO L158 Benchmark]: Boogie Preprocessor took 39.38ms. Allocated memory is still 111.1MB. Free memory was 84.0MB in the beginning and 82.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:18:25,597 INFO L158 Benchmark]: RCFGBuilder took 348.86ms. Allocated memory is still 111.1MB. Free memory was 82.9MB in the beginning and 71.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 19:18:25,599 INFO L158 Benchmark]: TraceAbstraction took 408979.82ms. Allocated memory was 111.1MB in the beginning and 524.3MB in the end (delta: 413.1MB). Free memory was 71.1MB in the beginning and 324.1MB in the end (delta: -253.0MB). Peak memory consumption was 319.3MB. Max. memory is 16.1GB. [2021-11-25 19:18:25,599 INFO L158 Benchmark]: Witness Printer took 102.72ms. Allocated memory is still 524.3MB. Free memory was 324.1MB in the beginning and 318.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-25 19:18:25,606 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory is still 87.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 293.74ms. Allocated memory is still 111.1MB. Free memory was 71.1MB in the beginning and 85.7MB in the end (delta: -14.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.97ms. Allocated memory is still 111.1MB. Free memory was 85.7MB in the beginning and 84.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.38ms. Allocated memory is still 111.1MB. Free memory was 84.0MB in the beginning and 82.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 348.86ms. Allocated memory is still 111.1MB. Free memory was 82.9MB in the beginning and 71.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 408979.82ms. Allocated memory was 111.1MB in the beginning and 524.3MB in the end (delta: 413.1MB). Free memory was 71.1MB in the beginning and 324.1MB in the end (delta: -253.0MB). Peak memory consumption was 319.3MB. Max. memory is 16.1GB. * Witness Printer took 102.72ms. Allocated memory is still 524.3MB. Free memory was 324.1MB in the beginning and 318.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: 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, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 408.8s, OverallIterations: 20, TraceHistogramMax: 22, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 95.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 123.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 13 mSolverCounterUnknown, 1148 SdHoareTripleChecker+Valid, 57.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1078 mSDsluCounter, 4763 SdHoareTripleChecker+Invalid, 56.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 56 IncrementalHoareTripleChecker+Unchecked, 4163 mSDsCounter, 1632 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5656 IncrementalHoareTripleChecker+Invalid, 7357 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1632 mSolverCounterUnsat, 760 mSDtfsCounter, 5656 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3928 GetRequests, 3086 SyntacticMatches, 189 SemanticMatches, 653 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 14953 ImplicationChecksByTransitivity, 105.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=295occurred in iteration=17, InterpolantAutomatonStates: 306, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 417 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 270 PreInvPairs, 354 NumberOfFragments, 8243 HoareAnnotationTreeSize, 270 FomulaSimplifications, 29619 FormulaSimplificationTreeSizeReduction, 32.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 692710 FormulaSimplificationTreeSizeReductionInter, 91.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 14.4s InterpolantComputationTime, 1370 NumberOfCodeBlocks, 1122 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2466 ConstructedInterpolants, 14 QuantifiedInterpolants, 12038 SizeOfPredicates, 112 NumberOfNonLiveVariables, 3231 ConjunctsInSsa, 433 ConjunctsInUnsatCore, 36 InterpolantComputations, 6 PerfectInterpolantSequences, 6924/7390 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 2.2s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 5, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 38, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 43, TOOLS_POST_TIME: 0.8s, TOOLS_POST_CALL_APPLICATIONS: 25, TOOLS_POST_CALL_TIME: 0.9s, TOOLS_POST_RETURN_APPLICATIONS: 16, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 84, TOOLS_QUANTIFIERELIM_TIME: 1.7s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.4s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 119, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 30, DOMAIN_JOIN_TIME: 0.2s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 4, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 38, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME: 0.5s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.5s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 4, CALL_SUMMARIZER_APPLICATIONS: 16, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 487, DAG_COMPRESSION_RETAINED_NODES: 119, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((unknown-#length-unknown[3] == 12 && (b + x * p + y * r == x * q + y * s + y * k * s + x * k * q || !(c == 0))) && b * d == v) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && b == x * q + y * s) && r == 0) && q == 0) && \valid[1] == 1) && c < b) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && a == x * p + y * r) && b <= x) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && b + c == x) && #NULL == 0) || (((((a == c && ((((((((((((((((((((unknown-#length-unknown[3] == 12 && temp == 0) && !(0 == (if 1 <= x then 1 else 0))) && s == temp) && a == y) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && x < y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == x) && \valid[3] == 1) && q == 1) && \valid[1] == 1) && r == 1) && \valid[0] == 0) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((((((((((((((unknown-#length-unknown[3] == 12 && !(0 == (if 1 <= x then 1 else 0))) && !((if 1 <= y then 1 else 0) == 0)) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && b == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && r == 0) && q == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0))) && k == 0) && #NULL == 0) && x <= 2) && a == x * p + y * r)) || (((c / -2 <= 0 && ((((((((((((((((((((((unknown-#length-unknown[3] == 12 && !(0 == (if 1 <= x then 1 else 0))) && (b + x * p + y * r == x * q + y * s + y * k * s + x * k * q || !(c == 0))) && a == y) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && b == x * q + y * s) && q == 1) && s == 0) && \valid[1] == 1) && r == 1) && \valid[0] == 0) && b < a) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && a == x * p + y * r) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((((((((((((((((((unknown-#length-unknown[3] == 12 && v * -1 / -2 <= b) && !(0 == (if 1 <= x then 1 else 0))) && (b + x * p + y * r == x * q + y * s + y * k * s + x * k * q || !(c == 0))) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && b * d == v) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && b == x * q + y * s) && r == 0) && q == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && a == x * p + y * r) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0))) && 2 * c < 2) && x <= 2) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((unknown-#length-unknown[3] == 12 && !(b == 0)) && !(0 == (if 1 <= x then 1 else 0))) && 1 <= y) && b < 2) && a == c) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && b * d == v) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && b == x * q + y * s) && k == 0) && 4 * b <= c) && c <= 2) && \valid[1] == 1) && v <= 4 * b) && \valid[0] == 0) && b < a) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && a == x * p + y * r) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((b * d == v && ((((((((((((((((((((unknown-#length-unknown[3] == 12 && temp == 0) && !(0 == (if 1 <= x then 1 else 0))) && s == temp) && a == y) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && x < y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == x) && \valid[3] == 1) && q == 1) && \valid[1] == 1) && r == 1) && \valid[0] == 0) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((unknown-#length-unknown[3] == 12 && !((if 1 <= y then 1 else 0) == 0)) && p == 1) && b == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && q == 0) && \valid[1] == 1) && \valid[0] == 0) && !((if 0 <= x && x <= 2 then 1 else 0) == 0)) && \valid[2] == 1) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0))) && #NULL <= 0) && b == v) && c <= 2) && b < a) && v < c) && 0 <= #NULL) && a == x * p + y * r) && k * x * q + c + y * k * s == x * p + y * r)) || ((((((((((((((((((((((((((unknown-#length-unknown[3] == 12 && !(b == 0)) && !(0 == (if 1 <= x then 1 else 0))) && 1 <= y) && b < 2) && a == c) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && b * d == v) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && b == x * q + y * s) && k == 0) && c <= 2) && \valid[1] == 1) && 2 * b == v) && \valid[0] == 0) && b < a) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && a == x * p + y * r) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && b < (2 + b * -1) / 2)) || (((((((((a == c && b * d == v) && #NULL <= 0) && ((((((((((((((((((((unknown-#length-unknown[3] == 12 && temp == 0) && !(0 == (if 1 <= x then 1 else 0))) && s == temp) && a == y) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && x < y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == x) && \valid[3] == 1) && q == 1) && \valid[1] == 1) && r == 1) && \valid[0] == 0) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((((((((((((((unknown-#length-unknown[3] == 12 && !(0 == (if 1 <= x then 1 else 0))) && !((if 1 <= y then 1 else 0) == 0)) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && b == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && r == 0) && q == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0))) && k == 0) && v * -1 / -2 <= c / 2) && 0 <= #NULL) && x <= 2) && a == x * p + y * r) && s == 1)) || (((((((((a == c && b * d == v) && ((((((((((((((((((((unknown-#length-unknown[3] == 12 && temp == 0) && !(0 == (if 1 <= x then 1 else 0))) && s == temp) && a == y) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && x < y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == x) && \valid[3] == 1) && q == 1) && \valid[1] == 1) && r == 1) && \valid[0] == 0) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((unknown-#length-unknown[3] == 12 && !((if 1 <= y then 1 else 0) == 0)) && p == 1) && b == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && q == 0) && \valid[1] == 1) && \valid[0] == 0) && !((if 0 <= x && x <= 2 then 1 else 0) == 0)) && \valid[2] == 1) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0))) && #NULL <= 0) && k == 0) && b <= c) && (v * -1 + c) / -2 <= 0) && 0 <= #NULL) && a == x * p + y * r) && s == 1)) || (((((((((#NULL <= 0 && ((((((((((((((((((((unknown-#length-unknown[3] == 12 && temp == 0) && !(0 == (if 1 <= x then 1 else 0))) && s == temp) && a == y) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && x < y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == x) && \valid[3] == 1) && q == 1) && \valid[1] == 1) && r == 1) && \valid[0] == 0) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((((((((((((((unknown-#length-unknown[3] == 12 && !(0 == (if 1 <= x then 1 else 0))) && !((if 1 <= y then 1 else 0) == 0)) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && b == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && r == 0) && q == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0))) && k == 0) && 2 * b == v) && b < a) && 0 <= #NULL) && x <= 2) && 2 == d) && a == x * p + y * r) && k * x * q + c + y * k * s == x * p + y * r) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((unknown-#length-unknown[3] == 12 && p == 1) && y <= 2) && b / -2 <= 0) && x < y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && r == 0) && \valid[1] == 1) && (!(b == 0) || x * q + y * s + a == x * p + y * r)) && c / -2 <= 0) && \valid[0] == 0) && b < a) && \valid[2] == 1) && #NULL == 0) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && 2 * c < 2) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((((((((unknown-#length-unknown[3] == 12 && !(0 == (if 1 <= x then 1 else 0))) && p == 0) && b / -2 <= 0) && a == y) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && c <= 2) && \valid[1] == 1) && r == 1) && (!(b == 0) || x * q + y * s + a == x * p + y * r)) && c / -2 <= 0) && \valid[0] == 0) && b < a) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && b < (2 + b * -1) / 2)) || ((a <= 2 && ((((((((((((((((((((unknown-#length-unknown[3] == 12 && !(0 == (if 1 <= x then 1 else 0))) && !((if 1 <= y then 1 else 0) == 0)) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && b == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && r == 0) && q == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((((((unknown-#length-unknown[3] == 12 && temp == 0) && !(0 == (if 1 <= x then 1 else 0))) && q + k * p == 1) && c == x) && a == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == c) && \valid[3] == 1) && k == 0) && \valid[1] == 1) && r == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && c < a) && unknown-#memory_int-unknown[1][1] == 0) && k + s == temp) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0))) && a == x * p + y * r) RESULT: Ultimate proved your program to be correct! [2021-11-25 19:18:25,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a944ceb-1c6b-4ff0-8216-351c0a42556f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE