./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-23.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-23.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --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 d07b7415c3fe9e96ce75813c6dc74e1ba61589ee27a287636eeb985665ada946 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 11:24:24,772 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 11:24:24,869 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 11:24:24,876 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 11:24:24,876 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 11:24:24,912 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 11:24:24,915 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 11:24:24,916 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 11:24:24,917 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 11:24:24,919 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 11:24:24,919 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 11:24:24,920 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 11:24:24,920 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 11:24:24,921 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 11:24:24,921 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 11:24:24,924 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 11:24:24,924 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 11:24:24,924 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 11:24:24,925 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 11:24:24,925 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 11:24:24,925 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 11:24:24,926 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 11:24:24,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 11:24:24,931 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 11:24:24,931 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 11:24:24,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 11:24:24,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 11:24:24,932 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 11:24:24,932 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 11:24:24,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 11:24:24,933 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 11:24:24,933 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 11:24:24,933 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 11:24:24,933 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 11:24:24,948 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 11:24:24,948 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 11:24:24,948 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 11:24:24,949 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 11:24:24,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:24:24,950 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 11:24:24,950 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 11:24:24,952 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 11:24:24,952 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 11:24:24,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 11:24:24,953 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 11:24:24,953 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 11:24:24,954 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 11:24:24,954 INFO L153 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_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d07b7415c3fe9e96ce75813c6dc74e1ba61589ee27a287636eeb985665ada946 [2024-11-02 11:24:25,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 11:24:25,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 11:24:25,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 11:24:25,446 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 11:24:25,446 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 11:24:25,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-23.i Unable to find full path for "g++" [2024-11-02 11:24:27,508 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 11:24:27,718 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 11:24:27,719 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-23.i [2024-11-02 11:24:27,726 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2/data/d4f523f06/6a1e362fa76b4df9be20df0dad633cd6/FLAG6274bbeee [2024-11-02 11:24:28,103 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2/data/d4f523f06/6a1e362fa76b4df9be20df0dad633cd6 [2024-11-02 11:24:28,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 11:24:28,113 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 11:24:28,114 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 11:24:28,114 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 11:24:28,120 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 11:24:28,121 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:24:28" (1/1) ... [2024-11-02 11:24:28,123 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c5696b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:28, skipping insertion in model container [2024-11-02 11:24:28,126 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:24:28" (1/1) ... [2024-11-02 11:24:28,159 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 11:24:28,370 WARN L251 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_29844633-ff7b-40ae-8e01-79c25e56631b/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-23.i[915,928] [2024-11-02 11:24:28,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:24:28,425 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 11:24:28,436 WARN L251 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_29844633-ff7b-40ae-8e01-79c25e56631b/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-23.i[915,928] [2024-11-02 11:24:28,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:24:28,507 INFO L204 MainTranslator]: Completed translation [2024-11-02 11:24:28,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:28 WrapperNode [2024-11-02 11:24:28,511 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 11:24:28,512 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 11:24:28,513 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 11:24:28,513 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 11:24:28,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:28" (1/1) ... [2024-11-02 11:24:28,538 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:28" (1/1) ... [2024-11-02 11:24:28,604 INFO L138 Inliner]: procedures = 26, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 140 [2024-11-02 11:24:28,605 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 11:24:28,607 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 11:24:28,607 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 11:24:28,607 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 11:24:28,629 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:28" (1/1) ... [2024-11-02 11:24:28,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:28" (1/1) ... [2024-11-02 11:24:28,635 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:28" (1/1) ... [2024-11-02 11:24:28,636 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:28" (1/1) ... [2024-11-02 11:24:28,645 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:28" (1/1) ... [2024-11-02 11:24:28,653 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:28" (1/1) ... [2024-11-02 11:24:28,658 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:28" (1/1) ... [2024-11-02 11:24:28,659 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:28" (1/1) ... [2024-11-02 11:24:28,666 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 11:24:28,667 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 11:24:28,667 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 11:24:28,668 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 11:24:28,669 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:28" (1/1) ... [2024-11-02 11:24:28,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:24:28,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:24:28,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 11:24:28,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 11:24:28,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 11:24:28,752 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 11:24:28,752 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 11:24:28,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 11:24:28,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 11:24:28,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 11:24:28,838 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 11:24:28,840 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 11:24:29,214 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-02 11:24:29,215 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 11:24:29,513 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 11:24:29,514 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 11:24:29,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:24:29 BoogieIcfgContainer [2024-11-02 11:24:29,514 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 11:24:29,516 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 11:24:29,517 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 11:24:29,520 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 11:24:29,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:24:28" (1/3) ... [2024-11-02 11:24:29,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b577df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:24:29, skipping insertion in model container [2024-11-02 11:24:29,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:28" (2/3) ... [2024-11-02 11:24:29,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b577df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:24:29, skipping insertion in model container [2024-11-02 11:24:29,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:24:29" (3/3) ... [2024-11-02 11:24:29,524 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-23.i [2024-11-02 11:24:29,543 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 11:24:29,544 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 11:24:29,619 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 11:24:29,629 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@7cd4798a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 11:24:29,630 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 11:24:29,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-02 11:24:29,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-02 11:24:29,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:29,648 INFO L215 NwaCegarLoop]: trace histogram [14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:24:29,648 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:24:29,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:29,656 INFO L85 PathProgramCache]: Analyzing trace with hash -319909219, now seen corresponding path program 1 times [2024-11-02 11:24:29,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:24:29,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111867350] [2024-11-02 11:24:29,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:29,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:24:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:31,267 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-11-02 11:24:31,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:24:31,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111867350] [2024-11-02 11:24:31,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111867350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:24:31,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759523273] [2024-11-02 11:24:31,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:31,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:24:31,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:24:31,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:24:31,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 11:24:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:31,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-02 11:24:31,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:24:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 124 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-02 11:24:34,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 11:24:38,943 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-02 11:24:38,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759523273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 11:24:38,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1675230679] [2024-11-02 11:24:38,968 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-02 11:24:38,968 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 11:24:38,972 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 11:24:38,978 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 11:24:38,979 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 11:24:41,456 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 80 for LOIs [2024-11-02 11:24:41,486 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 11:24:44,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1675230679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:24:44,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-02 11:24:44,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [5, 6, 5] total 25 [2024-11-02 11:24:44,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765561812] [2024-11-02 11:24:44,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:24:44,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-02 11:24:44,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:24:44,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-02 11:24:44,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2024-11-02 11:24:44,528 INFO L87 Difference]: Start difference. First operand has 30 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 16 states, 12 states have (on average 1.0) internal successors, (12), 11 states have internal predecessors, (12), 8 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2024-11-02 11:24:46,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:24:46,404 INFO L93 Difference]: Finished difference Result 98 states and 135 transitions. [2024-11-02 11:24:46,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-02 11:24:46,406 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 1.0) internal successors, (12), 11 states have internal predecessors, (12), 8 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) Word has length 53 [2024-11-02 11:24:46,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:24:46,414 INFO L225 Difference]: With dead ends: 98 [2024-11-02 11:24:46,415 INFO L226 Difference]: Without dead ends: 69 [2024-11-02 11:24:46,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=340, Invalid=920, Unknown=0, NotChecked=0, Total=1260 [2024-11-02 11:24:46,422 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 31 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 11:24:46,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 71 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 11:24:46,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-02 11:24:46,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2024-11-02 11:24:46,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 28 states have call successors, (28), 9 states have call predecessors, (28), 9 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-02 11:24:46,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 87 transitions. [2024-11-02 11:24:46,489 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 87 transitions. Word has length 53 [2024-11-02 11:24:46,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:24:46,490 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 87 transitions. [2024-11-02 11:24:46,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 1.0) internal successors, (12), 11 states have internal predecessors, (12), 8 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2024-11-02 11:24:46,491 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 87 transitions. [2024-11-02 11:24:46,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-02 11:24:46,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:46,495 INFO L215 NwaCegarLoop]: trace histogram [28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-02 11:24:46,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 11:24:46,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:24:46,696 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:24:46,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:46,697 INFO L85 PathProgramCache]: Analyzing trace with hash -171259520, now seen corresponding path program 1 times [2024-11-02 11:24:46,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:24:46,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748989386] [2024-11-02 11:24:46,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:46,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:24:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:48,242 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-02 11:24:48,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:24:48,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748989386] [2024-11-02 11:24:48,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748989386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:24:48,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650827241] [2024-11-02 11:24:48,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:48,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:24:48,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:24:48,246 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:24:48,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29844633-ff7b-40ae-8e01-79c25e56631b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 11:24:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:48,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-02 11:24:48,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:24:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 139 proven. 18 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2024-11-02 11:24:49,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 11:24:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2024-11-02 11:24:54,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650827241] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 11:24:54,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [296963289] [2024-11-02 11:24:54,473 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2024-11-02 11:24:54,473 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 11:24:54,474 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 11:24:54,474 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 11:24:54,475 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs