./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_loop-invariants/recursified_linear-inequality-inv-b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/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_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_loop-invariants/recursified_linear-inequality-inv-b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/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_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/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 c117c02695ddb101583ad96117955e242a853299846ac846441a25e3775ce242 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:37:19,594 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:37:19,683 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:37:19,691 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:37:19,692 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:37:19,726 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:37:19,727 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:37:19,727 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:37:19,728 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:37:19,729 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:37:19,731 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:37:19,731 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:37:19,732 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:37:19,732 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:37:19,732 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:37:19,733 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:37:19,733 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:37:19,733 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:37:19,734 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:37:19,734 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:37:19,734 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:37:19,736 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:37:19,737 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:37:19,737 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:37:19,738 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:37:19,738 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:37:19,739 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:37:19,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:37:19,739 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:37:19,740 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:37:19,740 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:37:19,740 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:37:19,740 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:37:19,741 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:37:19,741 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:37:19,741 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:37:19,741 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:37:19,742 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:37:19,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:37:19,742 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:37:19,743 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:37:19,744 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:37:19,745 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:37:19,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:37:19,745 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:37:19,746 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:37:19,746 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:37:19,746 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_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c117c02695ddb101583ad96117955e242a853299846ac846441a25e3775ce242 [2024-11-02 12:37:20,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:37:20,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:37:20,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:37:20,094 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:37:20,095 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:37:20,096 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/recursified_loop-invariants/recursified_linear-inequality-inv-b.c Unable to find full path for "g++" [2024-11-02 12:37:22,228 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:37:22,440 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:37:22,440 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/sv-benchmarks/c/recursified_loop-invariants/recursified_linear-inequality-inv-b.c [2024-11-02 12:37:22,451 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/bin/utaipan-verify-DbMuA5NWw2/data/7152bed12/15b1d980a64b4f378d2454d861eeb30c/FLAGd8f07c6c3 [2024-11-02 12:37:22,474 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/bin/utaipan-verify-DbMuA5NWw2/data/7152bed12/15b1d980a64b4f378d2454d861eeb30c [2024-11-02 12:37:22,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:37:22,479 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:37:22,483 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:37:22,483 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:37:22,491 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:37:22,492 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:37:22" (1/1) ... [2024-11-02 12:37:22,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cf2934b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:22, skipping insertion in model container [2024-11-02 12:37:22,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:37:22" (1/1) ... [2024-11-02 12:37:22,526 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:37:22,773 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_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/sv-benchmarks/c/recursified_loop-invariants/recursified_linear-inequality-inv-b.c[1476,1489] [2024-11-02 12:37:22,779 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_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/sv-benchmarks/c/recursified_loop-invariants/recursified_linear-inequality-inv-b.c[1549,1562] [2024-11-02 12:37:22,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:37:22,794 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:37:22,813 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_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/sv-benchmarks/c/recursified_loop-invariants/recursified_linear-inequality-inv-b.c[1476,1489] [2024-11-02 12:37:22,815 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_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/sv-benchmarks/c/recursified_loop-invariants/recursified_linear-inequality-inv-b.c[1549,1562] [2024-11-02 12:37:22,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:37:22,834 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:37:22,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:22 WrapperNode [2024-11-02 12:37:22,835 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:37:22,836 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:37:22,836 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:37:22,836 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:37:22,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:22" (1/1) ... [2024-11-02 12:37:22,858 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:22" (1/1) ... [2024-11-02 12:37:22,892 INFO L138 Inliner]: procedures = 13, calls = 46, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2024-11-02 12:37:22,893 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:37:22,896 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:37:22,896 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:37:22,896 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:37:22,908 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:22" (1/1) ... [2024-11-02 12:37:22,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:22" (1/1) ... [2024-11-02 12:37:22,913 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:22" (1/1) ... [2024-11-02 12:37:22,913 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:22" (1/1) ... [2024-11-02 12:37:22,917 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:22" (1/1) ... [2024-11-02 12:37:22,919 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:22" (1/1) ... [2024-11-02 12:37:22,921 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:22" (1/1) ... [2024-11-02 12:37:22,922 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:22" (1/1) ... [2024-11-02 12:37:22,924 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:37:22,925 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:37:22,925 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:37:22,925 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:37:22,926 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:22" (1/1) ... [2024-11-02 12:37:22,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:37:22,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:37:22,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:37:22,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:37:23,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:37:23,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:37:23,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:37:23,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:37:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:37:23,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:37:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:37:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:37:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_12_to_15_0 [2024-11-02 12:37:23,010 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_12_to_15_0 [2024-11-02 12:37:23,130 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:37:23,132 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:37:23,327 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-02 12:37:23,328 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:37:23,352 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:37:23,352 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 12:37:23,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:37:23 BoogieIcfgContainer [2024-11-02 12:37:23,353 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:37:23,356 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:37:23,356 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:37:23,359 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:37:23,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:37:22" (1/3) ... [2024-11-02 12:37:23,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ec59f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:37:23, skipping insertion in model container [2024-11-02 12:37:23,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:22" (2/3) ... [2024-11-02 12:37:23,362 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ec59f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:37:23, skipping insertion in model container [2024-11-02 12:37:23,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:37:23" (3/3) ... [2024-11-02 12:37:23,364 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_linear-inequality-inv-b.c [2024-11-02 12:37:23,388 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:37:23,388 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-02 12:37:23,475 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:37:23,485 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;@292dd60c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:37:23,485 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-02 12:37:23,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:37:23,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-02 12:37:23,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:23,502 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:23,503 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:37:23,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:23,512 INFO L85 PathProgramCache]: Analyzing trace with hash 947785726, now seen corresponding path program 1 times [2024-11-02 12:37:23,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:23,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883830832] [2024-11-02 12:37:23,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:23,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:37:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:24,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:24,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:37:24,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883830832] [2024-11-02 12:37:24,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883830832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:24,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:24,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:37:24,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603287361] [2024-11-02 12:37:24,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:24,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:37:24,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:37:24,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:37:24,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:37:24,184 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:37:24,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:24,295 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2024-11-02 12:37:24,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:37:24,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-02 12:37:24,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:24,308 INFO L225 Difference]: With dead ends: 25 [2024-11-02 12:37:24,308 INFO L226 Difference]: Without dead ends: 14 [2024-11-02 12:37:24,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:37:24,319 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:24,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:37:24,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-02 12:37:24,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-02 12:37:24,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-02 12:37:24,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-11-02 12:37:24,374 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2024-11-02 12:37:24,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:24,374 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-11-02 12:37:24,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:37:24,375 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-11-02 12:37:24,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-02 12:37:24,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:24,378 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:24,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:37:24,378 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:37:24,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:24,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1341401249, now seen corresponding path program 1 times [2024-11-02 12:37:24,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:24,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919685872] [2024-11-02 12:37:24,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:24,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:37:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:25,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:37:25,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:37:25,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919685872] [2024-11-02 12:37:25,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919685872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:37:25,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038193231] [2024-11-02 12:37:25,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:25,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:37:25,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:37:25,903 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:37:25,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:37:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:26,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-02 12:37:26,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:37:26,247 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-02 12:37:26,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2024-11-02 12:37:26,396 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_z_1 Int) (v_y_1 Int)) (and (<= v_z_1 255) (<= 0 v_z_1) (= (store (let ((.cse0 (store |c_old(#memory_int)| |c_func_to_recursive_line_12_to_15_0_#in~v.base| (store (select |c_old(#memory_int)| |c_func_to_recursive_line_12_to_15_0_#in~v.base|) |c_func_to_recursive_line_12_to_15_0_#in~v.offset| (+ (* 256 v_y_1) v_z_1))))) (store .cse0 |c_func_to_recursive_line_12_to_15_0_#in~s.base| (let ((.cse1 (select .cse0 |c_func_to_recursive_line_12_to_15_0_#in~s.base|))) (store .cse1 |c_func_to_recursive_line_12_to_15_0_#in~s.offset| (+ v_z_1 (mod (select .cse1 |c_func_to_recursive_line_12_to_15_0_#in~s.offset|) 256)))))) |c_func_to_recursive_line_12_to_15_0_#in~i.base| (select |c_#memory_int| |c_func_to_recursive_line_12_to_15_0_#in~i.base|)) |c_#memory_int|))) is different from true [2024-11-02 12:37:26,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-02 12:37:26,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 34 [2024-11-02 12:37:26,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2024-11-02 12:37:26,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 46 treesize of output 22 [2024-11-02 12:37:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2024-11-02 12:37:26,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:37:27,050 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_z_2 Int) (v_y_2 Int) (v_ArrVal_48 (Array Int Int)) (|ULTIMATE.start_main_~#v~0#1.offset| Int)) (or (let ((.cse0 (store (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#v~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#v~0#1.base|) |ULTIMATE.start_main_~#v~0#1.offset| (+ v_z_2 (* 256 v_y_2)))))) (store .cse1 |c_ULTIMATE.start_main_~#s~0#1.base| (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#s~0#1.base|))) (store .cse2 |c_ULTIMATE.start_main_~#s~0#1.offset| (+ (mod (select .cse2 |c_ULTIMATE.start_main_~#s~0#1.offset|) 256) v_z_2))))) |c_ULTIMATE.start_main_~#i~0#1.base| v_ArrVal_48))) (< (mod (select (select .cse0 |c_ULTIMATE.start_main_~#v~0#1.base|) |ULTIMATE.start_main_~#v~0#1.offset|) 256) (+ (mod (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 256) 1))) (< 255 v_z_2) (< v_z_2 0))) is different from false [2024-11-02 12:37:27,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038193231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:37:27,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [554888445] [2024-11-02 12:37:27,078 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-02 12:37:27,078 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:37:27,083 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-02 12:37:27,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 12:37:27,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 13 [2024-11-02 12:37:27,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117857708] [2024-11-02 12:37:27,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 12:37:27,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-02 12:37:27,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:37:27,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-02 12:37:27,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=128, Unknown=2, NotChecked=46, Total=210 [2024-11-02 12:37:27,090 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-02 12:37:27,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:27,553 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2024-11-02 12:37:27,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-02 12:37:27,554 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 15 [2024-11-02 12:37:27,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:27,555 INFO L225 Difference]: With dead ends: 24 [2024-11-02 12:37:27,555 INFO L226 Difference]: Without dead ends: 18 [2024-11-02 12:37:27,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=222, Unknown=2, NotChecked=62, Total=342 [2024-11-02 12:37:27,558 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:27,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 19 Unchecked, 0.1s Time] [2024-11-02 12:37:27,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-02 12:37:27,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-02 12:37:27,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 12:37:27,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-02 12:37:27,570 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2024-11-02 12:37:27,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:27,570 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-02 12:37:27,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-02 12:37:27,571 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-02 12:37:27,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-02 12:37:27,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:27,573 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:27,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-02 12:37:27,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:37:27,778 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:37:27,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:27,779 INFO L85 PathProgramCache]: Analyzing trace with hash 2114283542, now seen corresponding path program 2 times [2024-11-02 12:37:27,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:27,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6033379] [2024-11-02 12:37:27,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:27,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:37:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:37:27,927 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-02 12:37:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:37:28,012 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-02 12:37:28,013 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-02 12:37:28,014 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-02 12:37:28,016 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-02 12:37:28,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:37:28,020 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1] [2024-11-02 12:37:28,055 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:37:28,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:37:28 BoogieIcfgContainer [2024-11-02 12:37:28,059 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:37:28,060 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:37:28,060 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:37:28,060 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:37:28,061 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:37:23" (3/4) ... [2024-11-02 12:37:28,062 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-02 12:37:28,109 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 12:37:28,109 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:37:28,110 INFO L158 Benchmark]: Toolchain (without parser) took 5631.17ms. Allocated memory was 178.3MB in the beginning and 228.6MB in the end (delta: 50.3MB). Free memory was 138.1MB in the beginning and 121.5MB in the end (delta: 16.6MB). Peak memory consumption was 70.0MB. Max. memory is 16.1GB. [2024-11-02 12:37:28,110 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 115.3MB. Free memory was 83.0MB in the beginning and 83.0MB in the end (delta: 26.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:37:28,111 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.20ms. Allocated memory is still 178.3MB. Free memory was 137.5MB in the beginning and 125.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-02 12:37:28,111 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.22ms. Allocated memory is still 178.3MB. Free memory was 125.0MB in the beginning and 123.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:37:28,112 INFO L158 Benchmark]: Boogie Preprocessor took 28.68ms. Allocated memory is still 178.3MB. Free memory was 123.4MB in the beginning and 122.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:37:28,112 INFO L158 Benchmark]: RCFGBuilder took 427.85ms. Allocated memory is still 178.3MB. Free memory was 122.3MB in the beginning and 109.2MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-02 12:37:28,113 INFO L158 Benchmark]: TraceAbstraction took 4703.40ms. Allocated memory was 178.3MB in the beginning and 228.6MB in the end (delta: 50.3MB). Free memory was 108.2MB in the beginning and 124.7MB in the end (delta: -16.5MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2024-11-02 12:37:28,113 INFO L158 Benchmark]: Witness Printer took 49.37ms. Allocated memory is still 228.6MB. Free memory was 124.7MB in the beginning and 121.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-02 12:37:28,115 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 115.3MB. Free memory was 83.0MB in the beginning and 83.0MB in the end (delta: 26.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 352.20ms. Allocated memory is still 178.3MB. Free memory was 137.5MB in the beginning and 125.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.22ms. Allocated memory is still 178.3MB. Free memory was 125.0MB in the beginning and 123.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.68ms. Allocated memory is still 178.3MB. Free memory was 123.4MB in the beginning and 122.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 427.85ms. Allocated memory is still 178.3MB. Free memory was 122.3MB in the beginning and 109.2MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4703.40ms. Allocated memory was 178.3MB in the beginning and 228.6MB in the end (delta: 50.3MB). Free memory was 108.2MB in the beginning and 124.7MB in the end (delta: -16.5MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. * Witness Printer took 49.37ms. Allocated memory is still 228.6MB. Free memory was 124.7MB in the beginning and 121.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 52]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L38] unsigned char n = __VERIFIER_nondet_uchar(); [L38] unsigned char n = __VERIFIER_nondet_uchar(); [L39] EXPR \read(n) VAL [n={6:0}] [L39] COND FALSE !(n == 0) [L46] unsigned char v = 0; [L47] unsigned char s = 0; [L48] unsigned int i = 0; VAL [i={5:0}, n={6:0}, s={7:0}, v={8:0}] [L49] CALL func_to_recursive_line_12_to_15_0(&v, &n, &s, &i) VAL [\old(i)={5:0}, \old(n)={6:0}, \old(s)={7:0}, \old(v)={8:0}] [L22] EXPR \read(*i) [L22] EXPR \read(*n) VAL [\old(i)={5:0}, \old(n)={6:0}, \old(s)={7:0}, \old(v)={8:0}, i={5:0}, n={6:0}, s={7:0}, v={8:0}] [L22] COND TRUE (*i) < (*n) [L25] *v = __VERIFIER_nondet_uchar() [L26] EXPR \read(*s) [L26] EXPR \read(*v) [L26] *s += *v [L27] EXPR \read(*i) [L27] ++(*i) [L29] CALL func_to_recursive_line_12_to_15_0(v, n, s, i) VAL [\old(i)={5:0}, \old(n)={6:0}, \old(s)={7:0}, \old(v)={8:0}] [L22] EXPR \read(*i) [L22] EXPR \read(*n) VAL [\old(i)={5:0}, \old(n)={6:0}, \old(s)={7:0}, \old(v)={8:0}, i={5:0}, n={6:0}, s={7:0}, v={8:0}] [L22] COND TRUE (*i) < (*n) [L25] *v = __VERIFIER_nondet_uchar() [L26] EXPR \read(*s) [L26] EXPR \read(*v) [L26] *s += *v [L27] EXPR \read(*i) [L27] ++(*i) [L29] CALL func_to_recursive_line_12_to_15_0(v, n, s, i) VAL [\old(i)={5:0}, \old(n)={6:0}, \old(s)={7:0}, \old(v)={8:0}] [L22] EXPR \read(*i) [L22] EXPR \read(*n) VAL [\old(i)={5:0}, \old(n)={6:0}, \old(s)={7:0}, \old(v)={8:0}, i={5:0}, n={6:0}, s={7:0}, v={8:0}] [L22] COND FALSE !((*i) < (*n)) [L29] RET func_to_recursive_line_12_to_15_0(v, n, s, i) VAL [\old(i)={5:0}, \old(n)={6:0}, \old(s)={7:0}, \old(v)={8:0}, i={5:0}, n={6:0}, s={7:0}, v={8:0}] [L29] RET func_to_recursive_line_12_to_15_0(v, n, s, i) VAL [\old(i)={5:0}, \old(n)={6:0}, \old(s)={7:0}, \old(v)={8:0}, i={5:0}, n={6:0}, s={7:0}, v={8:0}] [L49] RET func_to_recursive_line_12_to_15_0(&v, &n, &s, &i) VAL [i={5:0}, n={6:0}, s={7:0}, v={8:0}] [L50] EXPR \read(s) [L50] EXPR \read(v) VAL [i={5:0}, n={6:0}, s={7:0}] [L50] COND TRUE s < v [L52] reach_error() VAL [i={5:0}, n={6:0}, s={7:0}] - UnprovableResult [Line: 60]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 4.6s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 64 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 19 IncrementalHoareTripleChecker+Unchecked, 46 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 91 IncrementalHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 18 mSDtfsCounter, 91 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=2, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 37 ConstructedInterpolants, 3 QuantifiedInterpolants, 638 SizeOfPredicates, 10 NumberOfNonLiveVariables, 172 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-02 12:37:28,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0ed9a3-ca30-40b5-ac12-9263c2ff2b4b/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE