./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ms2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ms2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur --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 125fe310e2ae1e5a109eb21d52d95bf156448ac6c5b2e6793bd0b6f80e48ce1d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 01:02:35,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:02:35,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:02:35,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:02:35,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:02:35,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:02:35,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:02:35,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:02:35,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:02:35,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:02:35,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:02:35,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:02:35,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:02:35,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:02:35,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:02:35,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:02:35,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:02:35,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:02:35,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:02:35,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:02:35,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:02:35,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:02:35,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:02:35,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:02:35,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:02:35,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:02:35,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:02:35,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:02:35,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:02:35,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:02:35,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:02:35,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:02:35,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:02:35,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:02:35,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:02:35,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:02:35,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:02:35,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:02:35,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:02:35,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:02:35,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:02:35,384 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 01:02:35,431 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:02:35,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:02:35,432 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:02:35,432 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:02:35,433 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:02:35,433 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:02:35,433 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:02:35,433 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:02:35,434 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:02:35,434 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 01:02:35,435 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:02:35,435 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:02:35,435 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 01:02:35,436 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 01:02:35,436 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:02:35,436 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 01:02:35,436 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 01:02:35,437 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 01:02:35,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:02:35,438 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 01:02:35,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:02:35,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 01:02:35,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:02:35,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:02:35,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:02:35,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:02:35,439 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 01:02:35,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:02:35,440 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:02:35,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:02:35,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:02:35,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:02:35,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:02:35,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:02:35,441 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 01:02:35,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:02:35,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:02:35,442 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 01:02:35,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 01:02:35,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:02:35,443 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:02:35,445 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 125fe310e2ae1e5a109eb21d52d95bf156448ac6c5b2e6793bd0b6f80e48ce1d [2022-11-26 01:02:35,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:02:35,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:02:35,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:02:35,825 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:02:35,825 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:02:35,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/array-fpi/ms2.c [2022-11-26 01:02:39,328 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:02:39,705 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:02:39,706 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/sv-benchmarks/c/array-fpi/ms2.c [2022-11-26 01:02:39,714 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/data/08ce0be86/1085ecd795cf4d8599634a9f845e8ca6/FLAG7bbfd360b [2022-11-26 01:02:39,737 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/data/08ce0be86/1085ecd795cf4d8599634a9f845e8ca6 [2022-11-26 01:02:39,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:02:39,747 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:02:39,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:02:39,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:02:39,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:02:39,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:02:39" (1/1) ... [2022-11-26 01:02:39,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@569fa5e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:39, skipping insertion in model container [2022-11-26 01:02:39,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:02:39" (1/1) ... [2022-11-26 01:02:39,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:02:39,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:02:40,024 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/sv-benchmarks/c/array-fpi/ms2.c[586,599] [2022-11-26 01:02:40,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:02:40,074 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:02:40,094 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/sv-benchmarks/c/array-fpi/ms2.c[586,599] [2022-11-26 01:02:40,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:02:40,134 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:02:40,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:40 WrapperNode [2022-11-26 01:02:40,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:02:40,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:02:40,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:02:40,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:02:40,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:40" (1/1) ... [2022-11-26 01:02:40,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:40" (1/1) ... [2022-11-26 01:02:40,202 INFO L138 Inliner]: procedures = 17, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-11-26 01:02:40,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:02:40,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:02:40,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:02:40,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:02:40,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:40" (1/1) ... [2022-11-26 01:02:40,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:40" (1/1) ... [2022-11-26 01:02:40,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:40" (1/1) ... [2022-11-26 01:02:40,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:40" (1/1) ... [2022-11-26 01:02:40,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:40" (1/1) ... [2022-11-26 01:02:40,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:40" (1/1) ... [2022-11-26 01:02:40,250 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:40" (1/1) ... [2022-11-26 01:02:40,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:40" (1/1) ... [2022-11-26 01:02:40,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:02:40,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:02:40,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:02:40,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:02:40,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:40" (1/1) ... [2022-11-26 01:02:40,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:02:40,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:02:40,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:02:40,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:02:40,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 01:02:40,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 01:02:40,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 01:02:40,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 01:02:40,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 01:02:40,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:02:40,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:02:40,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 01:02:40,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 01:02:40,448 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:02:40,451 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:02:40,736 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:02:40,848 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:02:40,863 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-26 01:02:40,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:02:40 BoogieIcfgContainer [2022-11-26 01:02:40,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:02:40,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:02:40,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:02:40,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:02:40,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:02:39" (1/3) ... [2022-11-26 01:02:40,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177a5914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:02:40, skipping insertion in model container [2022-11-26 01:02:40,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:40" (2/3) ... [2022-11-26 01:02:40,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177a5914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:02:40, skipping insertion in model container [2022-11-26 01:02:40,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:02:40" (3/3) ... [2022-11-26 01:02:40,891 INFO L112 eAbstractionObserver]: Analyzing ICFG ms2.c [2022-11-26 01:02:40,916 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:02:40,916 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 01:02:41,006 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:02:41,017 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@44705f5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:02:41,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 01:02:41,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:41,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 01:02:41,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:02:41,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-26 01:02:41,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:02:41,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:02:41,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1569259291, now seen corresponding path program 1 times [2022-11-26 01:02:41,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:02:41,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3754876] [2022-11-26 01:02:41,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:02:41,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:02:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:02:41,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:02:41,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:02:41,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3754876] [2022-11-26 01:02:41,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3754876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:02:41,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:02:41,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:02:41,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655794659] [2022-11-26 01:02:41,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:02:41,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:02:41,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:02:41,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:02:41,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:02:41,580 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:41,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:02:41,662 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2022-11-26 01:02:41,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:02:41,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-26 01:02:41,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:02:41,678 INFO L225 Difference]: With dead ends: 18 [2022-11-26 01:02:41,678 INFO L226 Difference]: Without dead ends: 8 [2022-11-26 01:02:41,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:02:41,690 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:02:41,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:02:41,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-26 01:02:41,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-26 01:02:41,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:41,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2022-11-26 01:02:41,739 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2022-11-26 01:02:41,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:02:41,741 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-11-26 01:02:41,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:41,742 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2022-11-26 01:02:41,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 01:02:41,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:02:41,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:02:41,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 01:02:41,746 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:02:41,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:02:41,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1413400264, now seen corresponding path program 1 times [2022-11-26 01:02:41,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:02:41,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702721966] [2022-11-26 01:02:41,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:02:41,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:02:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:02:42,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 01:02:42,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:02:42,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702721966] [2022-11-26 01:02:42,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702721966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:02:42,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:02:42,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 01:02:42,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945242386] [2022-11-26 01:02:42,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:02:42,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 01:02:42,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:02:42,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 01:02:42,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 01:02:42,009 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:42,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:02:42,037 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2022-11-26 01:02:42,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 01:02:42,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-26 01:02:42,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:02:42,039 INFO L225 Difference]: With dead ends: 12 [2022-11-26 01:02:42,039 INFO L226 Difference]: Without dead ends: 9 [2022-11-26 01:02:42,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 01:02:42,041 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:02:42,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:02:42,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-26 01:02:42,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-26 01:02:42,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:42,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-11-26 01:02:42,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2022-11-26 01:02:42,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:02:42,047 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-11-26 01:02:42,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:42,048 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-11-26 01:02:42,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 01:02:42,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:02:42,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:02:42,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 01:02:42,050 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:02:42,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:02:42,051 INFO L85 PathProgramCache]: Analyzing trace with hash -865774635, now seen corresponding path program 1 times [2022-11-26 01:02:42,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:02:42,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866973106] [2022-11-26 01:02:42,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:02:42,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:02:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:02:42,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 01:02:42,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:02:42,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866973106] [2022-11-26 01:02:42,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866973106] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:02:42,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269243090] [2022-11-26 01:02:42,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:02:42,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:02:42,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:02:42,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:02:42,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 01:02:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:02:42,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-26 01:02:42,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:02:42,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:02:42,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-26 01:02:42,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 01:02:42,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:02:42,837 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 01:02:42,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 51 [2022-11-26 01:02:42,861 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 01:02:42,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2022-11-26 01:02:42,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2022-11-26 01:02:42,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-26 01:02:42,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2022-11-26 01:02:42,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 01:02:42,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269243090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:02:42,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1841858812] [2022-11-26 01:02:42,987 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-26 01:02:42,988 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:02:42,992 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:02:42,999 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:02:43,000 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:02:43,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:43,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:43,176 INFO L321 Elim1Store]: treesize reduction 68, result has 33.3 percent of original size [2022-11-26 01:02:43,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 57 [2022-11-26 01:02:43,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:43,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:43,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:43,338 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-26 01:02:43,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-26 01:02:43,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 88 [2022-11-26 01:02:43,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:43,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:43,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:43,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:43,691 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:02:43,761 INFO L321 Elim1Store]: treesize reduction 222, result has 13.6 percent of original size [2022-11-26 01:02:43,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 19 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 12 case distinctions, treesize of input 425 treesize of output 422 [2022-11-26 01:02:43,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2022-11-26 01:02:43,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:02:44,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:02:44,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,086 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 01:02:44,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2022-11-26 01:02:44,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:02:44,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:44,139 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 01:02:44,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2022-11-26 01:02:44,158 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:02:44,611 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '137#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem10#1|) (= (ite (<= |ULTIMATE.start_main_#t~mem10#1| ~N~0) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-11-26 01:02:44,611 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:02:44,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:02:44,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-26 01:02:44,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100437575] [2022-11-26 01:02:44,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:02:44,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 01:02:44,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:02:44,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 01:02:44,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-11-26 01:02:44,614 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:44,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:02:44,682 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-11-26 01:02:44,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 01:02:44,683 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-26 01:02:44,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:02:44,683 INFO L225 Difference]: With dead ends: 13 [2022-11-26 01:02:44,683 INFO L226 Difference]: Without dead ends: 10 [2022-11-26 01:02:44,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-11-26 01:02:44,685 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:02:44,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 12 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:02:44,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-26 01:02:44,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-11-26 01:02:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:44,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-11-26 01:02:44,690 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2022-11-26 01:02:44,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:02:44,690 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-11-26 01:02:44,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:44,691 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-11-26 01:02:44,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 01:02:44,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:02:44,692 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:02:44,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-26 01:02:44,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:02:44,898 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:02:44,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:02:44,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1069249320, now seen corresponding path program 2 times [2022-11-26 01:02:44,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:02:44,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502703189] [2022-11-26 01:02:44,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:02:44,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:02:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:02:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:02:45,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:02:45,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502703189] [2022-11-26 01:02:45,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502703189] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:02:45,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607581937] [2022-11-26 01:02:45,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 01:02:45,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:02:45,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:02:45,007 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:02:45,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 01:02:45,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-26 01:02:45,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:02:45,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-26 01:02:45,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:02:45,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:02:45,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:02:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:02:45,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607581937] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:02:45,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1295292796] [2022-11-26 01:02:45,223 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-26 01:02:45,223 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:02:45,223 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:02:45,224 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:02:45,224 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:02:45,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,345 INFO L321 Elim1Store]: treesize reduction 68, result has 33.3 percent of original size [2022-11-26 01:02:45,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 57 [2022-11-26 01:02:45,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,461 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-26 01:02:45,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-26 01:02:45,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 117 [2022-11-26 01:02:45,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:45,770 INFO L321 Elim1Store]: treesize reduction 216, result has 9.2 percent of original size [2022-11-26 01:02:45,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 11 case distinctions, treesize of input 448 treesize of output 439 [2022-11-26 01:02:45,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2022-11-26 01:02:45,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:02:46,050 INFO L321 Elim1Store]: treesize reduction 56, result has 55.9 percent of original size [2022-11-26 01:02:46,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 156 [2022-11-26 01:02:46,113 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-26 01:02:46,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 47 [2022-11-26 01:02:46,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 01:02:46,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:46,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-26 01:02:46,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-26 01:02:46,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:02:46,356 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 01:02:46,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2022-11-26 01:02:46,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 01:02:46,386 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:02:46,755 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '234#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem10#1|) (= (ite (<= |ULTIMATE.start_main_#t~mem10#1| ~N~0) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-11-26 01:02:46,755 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:02:46,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:02:46,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-11-26 01:02:46,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397260972] [2022-11-26 01:02:46,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:02:46,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 01:02:46,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:02:46,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 01:02:46,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-26 01:02:46,758 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:46,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:02:46,822 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-11-26 01:02:46,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 01:02:46,822 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-26 01:02:46,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:02:46,823 INFO L225 Difference]: With dead ends: 17 [2022-11-26 01:02:46,823 INFO L226 Difference]: Without dead ends: 11 [2022-11-26 01:02:46,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-26 01:02:46,825 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:02:46,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:02:46,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-26 01:02:46,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-26 01:02:46,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:46,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-11-26 01:02:46,830 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 9 [2022-11-26 01:02:46,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:02:46,830 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-11-26 01:02:46,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:46,831 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-11-26 01:02:46,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-26 01:02:46,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:02:46,832 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-26 01:02:46,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 01:02:47,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:02:47,033 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:02:47,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:02:47,033 INFO L85 PathProgramCache]: Analyzing trace with hash -732622939, now seen corresponding path program 3 times [2022-11-26 01:02:47,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:02:47,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167584831] [2022-11-26 01:02:47,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:02:47,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:02:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:02:47,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:02:47,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:02:47,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167584831] [2022-11-26 01:02:47,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167584831] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:02:47,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244729471] [2022-11-26 01:02:47,801 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 01:02:47,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:02:47,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:02:47,803 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:02:47,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504c1fb4-7c03-4a31-bcc7-d436cad43418/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 01:02:47,884 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 01:02:47,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:02:47,890 WARN L261 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-26 01:02:47,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:02:47,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-26 01:02:48,924 INFO L321 Elim1Store]: treesize reduction 96, result has 62.5 percent of original size [2022-11-26 01:02:48,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 182 treesize of output 301 [2022-11-26 01:04:32,259 WARN L233 SmtUtils]: Spent 1.53m on a formula simplification. DAG size of input: 305 DAG size of output: 117 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:04:34,087 INFO L321 Elim1Store]: treesize reduction 1268, result has 28.4 percent of original size [2022-11-26 01:04:34,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 65 case distinctions, treesize of input 455 treesize of output 794 [2022-11-26 01:07:27,353 WARN L233 SmtUtils]: Spent 6.59s on a formula simplification that was a NOOP. DAG size: 1043 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-26 01:08:54,206 WARN L233 SmtUtils]: Spent 7.26s on a formula simplification that was a NOOP. DAG size: 2386 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-26 01:14:10,671 WARN L233 SmtUtils]: Spent 7.37s on a formula simplification that was a NOOP. DAG size: 795 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-26 01:17:03,373 WARN L233 SmtUtils]: Spent 1.35m on a formula simplification that was a NOOP. DAG size: 10653 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)