./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/eqn3f.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_ea5a5180-c785-4de2-8bee-afe0e81e777e/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea5a5180-c785-4de2-8bee-afe0e81e777e/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_ea5a5180-c785-4de2-8bee-afe0e81e777e/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea5a5180-c785-4de2-8bee-afe0e81e777e/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/eqn3f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea5a5180-c785-4de2-8bee-afe0e81e777e/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_ea5a5180-c785-4de2-8bee-afe0e81e777e/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 bca44e052eefc6b00b866663e43486330f5a5934fb493dcac1ddb036e3b264d6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:30:14,424 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:30:14,518 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea5a5180-c785-4de2-8bee-afe0e81e777e/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:30:14,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:30:14,529 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:30:14,560 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:30:14,561 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:30:14,561 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:30:14,562 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:30:14,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:30:14,563 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:30:14,563 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:30:14,564 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:30:14,564 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:30:14,564 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:30:14,566 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:30:14,566 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:30:14,567 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:30:14,567 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:30:14,567 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:30:14,568 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:30:14,572 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:30:14,572 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:30:14,573 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:30:14,573 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:30:14,573 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:30:14,573 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:30:14,574 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:30:14,574 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:30:14,574 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:30:14,574 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:30:14,575 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:30:14,589 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:30:14,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:30:14,590 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:30:14,590 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:30:14,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:30:14,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:30:14,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:30:14,591 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:30:14,591 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:30:14,594 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:30:14,594 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:30:14,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:30:14,595 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:30:14,595 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:30:14,595 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:30:14,595 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_ea5a5180-c785-4de2-8bee-afe0e81e777e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea5a5180-c785-4de2-8bee-afe0e81e777e/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bca44e052eefc6b00b866663e43486330f5a5934fb493dcac1ddb036e3b264d6 [2024-11-02 12:30:14,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:30:14,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:30:14,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:30:14,924 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:30:14,925 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:30:14,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea5a5180-c785-4de2-8bee-afe0e81e777e/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/array-fpi/eqn3f.c Unable to find full path for "g++" [2024-11-02 12:30:16,952 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:30:17,122 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:30:17,122 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea5a5180-c785-4de2-8bee-afe0e81e777e/sv-benchmarks/c/array-fpi/eqn3f.c [2024-11-02 12:30:17,129 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea5a5180-c785-4de2-8bee-afe0e81e777e/bin/utaipan-verify-DbMuA5NWw2/data/6abd97abe/a2ae1b00ac174885b1b93d3280d75943/FLAG9d029d43d [2024-11-02 12:30:17,515 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea5a5180-c785-4de2-8bee-afe0e81e777e/bin/utaipan-verify-DbMuA5NWw2/data/6abd97abe/a2ae1b00ac174885b1b93d3280d75943 [2024-11-02 12:30:17,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:30:17,519 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:30:17,520 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:30:17,520 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:30:17,526 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:30:17,526 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:30:17" (1/1) ... [2024-11-02 12:30:17,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67817502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:17, skipping insertion in model container [2024-11-02 12:30:17,527 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:30:17" (1/1) ... [2024-11-02 12:30:17,554 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:30:17,807 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_ea5a5180-c785-4de2-8bee-afe0e81e777e/sv-benchmarks/c/array-fpi/eqn3f.c[588,601] [2024-11-02 12:30:17,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:30:17,863 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:30:17,879 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_ea5a5180-c785-4de2-8bee-afe0e81e777e/sv-benchmarks/c/array-fpi/eqn3f.c[588,601] [2024-11-02 12:30:17,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:30:17,918 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:30:17,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:17 WrapperNode [2024-11-02 12:30:17,919 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:30:17,920 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:30:17,920 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:30:17,920 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:30:17,929 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:17" (1/1) ... [2024-11-02 12:30:17,943 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:17" (1/1) ... [2024-11-02 12:30:17,973 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2024-11-02 12:30:17,976 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:30:17,977 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:30:17,977 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:30:17,977 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:30:17,988 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:17" (1/1) ... [2024-11-02 12:30:17,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:17" (1/1) ... [2024-11-02 12:30:17,990 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:17" (1/1) ... [2024-11-02 12:30:17,992 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:17" (1/1) ... [2024-11-02 12:30:17,999 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:17" (1/1) ... [2024-11-02 12:30:18,005 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:17" (1/1) ... [2024-11-02 12:30:18,006 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:17" (1/1) ... [2024-11-02 12:30:18,007 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:17" (1/1) ... [2024-11-02 12:30:18,008 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:30:18,009 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:30:18,009 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:30:18,009 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:30:18,010 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:17" (1/1) ... [2024-11-02 12:30:18,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:30:18,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea5a5180-c785-4de2-8bee-afe0e81e777e/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:18,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea5a5180-c785-4de2-8bee-afe0e81e777e/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:30:18,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea5a5180-c785-4de2-8bee-afe0e81e777e/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:30:18,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:30:18,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:30:18,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:30:18,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:30:18,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:30:18,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:30:18,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:30:18,173 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:30:18,176 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:30:18,398 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-02 12:30:18,398 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:30:18,469 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:30:18,469 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-02 12:30:18,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:30:18 BoogieIcfgContainer [2024-11-02 12:30:18,470 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:30:18,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:30:18,475 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:30:18,479 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:30:18,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:30:17" (1/3) ... [2024-11-02 12:30:18,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44099e92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:30:18, skipping insertion in model container [2024-11-02 12:30:18,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:17" (2/3) ... [2024-11-02 12:30:18,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44099e92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:30:18, skipping insertion in model container [2024-11-02 12:30:18,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:30:18" (3/3) ... [2024-11-02 12:30:18,483 INFO L112 eAbstractionObserver]: Analyzing ICFG eqn3f.c [2024-11-02 12:30:18,504 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:30:18,504 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:30:18,581 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:30:18,588 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;@ceecfc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:30:18,589 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:30:18,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:18,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-02 12:30:18,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:18,601 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:30:18,603 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:30:18,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:18,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1623236014, now seen corresponding path program 1 times [2024-11-02 12:30:18,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:18,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959000449] [2024-11-02 12:30:18,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:18,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:30:18,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103836744] [2024-11-02 12:30:18,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:18,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:18,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea5a5180-c785-4de2-8bee-afe0e81e777e/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:18,899 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea5a5180-c785-4de2-8bee-afe0e81e777e/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:30:18,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea5a5180-c785-4de2-8bee-afe0e81e777e/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:30:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:30:19,048 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-02 12:30:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:30:19,110 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-02 12:30:19,114 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-02 12:30:19,115 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-02 12:30:19,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea5a5180-c785-4de2-8bee-afe0e81e777e/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-02 12:30:19,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea5a5180-c785-4de2-8bee-afe0e81e777e/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-02 12:30:19,323 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-02 12:30:19,347 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:30:19,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:30:19 BoogieIcfgContainer [2024-11-02 12:30:19,368 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:30:19,369 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:30:19,369 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:30:19,369 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:30:19,370 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:30:18" (3/4) ... [2024-11-02 12:30:19,374 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-02 12:30:19,461 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea5a5180-c785-4de2-8bee-afe0e81e777e/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 12:30:19,465 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:30:19,467 INFO L158 Benchmark]: Toolchain (without parser) took 1947.75ms. Allocated memory was 144.7MB in the beginning and 192.9MB in the end (delta: 48.2MB). Free memory was 105.3MB in the beginning and 163.3MB in the end (delta: -58.0MB). Peak memory consumption was 593.7kB. Max. memory is 16.1GB. [2024-11-02 12:30:19,467 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 144.7MB. Free memory was 112.3MB in the beginning and 112.1MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:30:19,468 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.85ms. Allocated memory is still 144.7MB. Free memory was 105.3MB in the beginning and 92.3MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-02 12:30:19,468 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.43ms. Allocated memory is still 144.7MB. Free memory was 92.3MB in the beginning and 90.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:30:19,473 INFO L158 Benchmark]: Boogie Preprocessor took 31.38ms. Allocated memory is still 144.7MB. Free memory was 90.7MB in the beginning and 89.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:30:19,473 INFO L158 Benchmark]: RCFGBuilder took 460.88ms. Allocated memory is still 144.7MB. Free memory was 89.5MB in the beginning and 74.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-02 12:30:19,474 INFO L158 Benchmark]: TraceAbstraction took 893.64ms. Allocated memory is still 144.7MB. Free memory was 73.9MB in the beginning and 113.3MB in the end (delta: -39.4MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. [2024-11-02 12:30:19,477 INFO L158 Benchmark]: Witness Printer took 96.99ms. Allocated memory was 144.7MB in the beginning and 192.9MB in the end (delta: 48.2MB). Free memory was 113.2MB in the beginning and 163.3MB in the end (delta: -50.1MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2024-11-02 12:30:19,480 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 144.7MB. Free memory was 112.3MB in the beginning and 112.1MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 398.85ms. Allocated memory is still 144.7MB. Free memory was 105.3MB in the beginning and 92.3MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.43ms. Allocated memory is still 144.7MB. Free memory was 92.3MB in the beginning and 90.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.38ms. Allocated memory is still 144.7MB. Free memory was 90.7MB in the beginning and 89.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 460.88ms. Allocated memory is still 144.7MB. Free memory was 89.5MB in the beginning and 74.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 893.64ms. Allocated memory is still 144.7MB. Free memory was 73.9MB in the beginning and 113.3MB in the end (delta: -39.4MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. * Witness Printer took 96.99ms. Allocated memory was 144.7MB in the beginning and 192.9MB in the end (delta: 48.2MB). Free memory was 113.2MB in the beginning and 163.3MB in the end (delta: -50.1MB). Peak memory consumption was 5.7MB. 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: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] a[0] = 6 [L32] b[0] = 10 [L34] i=1 VAL [N=1, a={-2:0}, b={-1:0}, i=1] [L34] COND FALSE !(i