./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 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f37c2f-3eeb-4fa7-b591-ce16193ea792/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f37c2f-3eeb-4fa7-b591-ce16193ea792/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f37c2f-3eeb-4fa7-b591-ce16193ea792/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f37c2f-3eeb-4fa7-b591-ce16193ea792/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/eqn3f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f37c2f-3eeb-4fa7-b591-ce16193ea792/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f37c2f-3eeb-4fa7-b591-ce16193ea792/bin/utaipan-verify-mE87zJ7Ire --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 0.2.3-dev-30e01a7 [2023-11-23 21:16:23,851 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:16:23,962 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f37c2f-3eeb-4fa7-b591-ce16193ea792/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:16:23,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:16:23,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:16:24,011 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:16:24,012 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:16:24,013 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:16:24,014 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:16:24,019 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:16:24,020 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:16:24,021 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:16:24,021 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:16:24,023 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:16:24,024 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:16:24,024 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:16:24,024 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:16:24,025 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:16:24,025 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:16:24,026 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:16:24,026 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:16:24,027 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:16:24,028 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:16:24,028 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:16:24,029 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:16:24,029 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:16:24,030 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:16:24,030 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:16:24,031 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:16:24,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:16:24,032 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:16:24,033 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:16:24,033 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:16:24,033 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:16:24,034 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:16:24,034 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:16:24,034 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:16:24,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:16:24,035 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:16:24,035 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:16:24,035 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:16:24,036 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:16:24,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:16:24,036 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:16:24,037 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:16:24,037 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:16:24,037 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:16:24,038 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_42f37c2f-3eeb-4fa7-b591-ce16193ea792/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f37c2f-3eeb-4fa7-b591-ce16193ea792/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bca44e052eefc6b00b866663e43486330f5a5934fb493dcac1ddb036e3b264d6 [2023-11-23 21:16:24,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:16:24,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:16:24,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:16:24,310 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:16:24,311 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:16:24,312 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f37c2f-3eeb-4fa7-b591-ce16193ea792/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/array-fpi/eqn3f.c [2023-11-23 21:16:27,397 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:16:27,658 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:16:27,659 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f37c2f-3eeb-4fa7-b591-ce16193ea792/sv-benchmarks/c/array-fpi/eqn3f.c [2023-11-23 21:16:27,668 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f37c2f-3eeb-4fa7-b591-ce16193ea792/bin/utaipan-verify-mE87zJ7Ire/data/4418ce7c3/52bd75b9503a47af8c3f733e788fc79d/FLAGc992608d1 [2023-11-23 21:16:27,687 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f37c2f-3eeb-4fa7-b591-ce16193ea792/bin/utaipan-verify-mE87zJ7Ire/data/4418ce7c3/52bd75b9503a47af8c3f733e788fc79d [2023-11-23 21:16:27,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:16:27,694 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:16:27,697 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:16:27,698 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:16:27,703 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:16:27,704 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:16:27" (1/1) ... [2023-11-23 21:16:27,705 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d21ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:27, skipping insertion in model container [2023-11-23 21:16:27,705 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:16:27" (1/1) ... [2023-11-23 21:16:27,732 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:16:27,932 WARN L240 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_42f37c2f-3eeb-4fa7-b591-ce16193ea792/sv-benchmarks/c/array-fpi/eqn3f.c[588,601] [2023-11-23 21:16:27,953 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:16:27,966 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:16:27,980 WARN L240 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_42f37c2f-3eeb-4fa7-b591-ce16193ea792/sv-benchmarks/c/array-fpi/eqn3f.c[588,601] [2023-11-23 21:16:27,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:16:28,005 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:16:28,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:28 WrapperNode [2023-11-23 21:16:28,006 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:16:28,007 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:16:28,007 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:16:28,007 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:16:28,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:28" (1/1) ... [2023-11-23 21:16:28,021 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:28" (1/1) ... [2023-11-23 21:16:28,055 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2023-11-23 21:16:28,056 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:16:28,056 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:16:28,057 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:16:28,057 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:16:28,067 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:28" (1/1) ... [2023-11-23 21:16:28,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:28" (1/1) ... [2023-11-23 21:16:28,069 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:28" (1/1) ... [2023-11-23 21:16:28,070 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:28" (1/1) ... [2023-11-23 21:16:28,085 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:28" (1/1) ... [2023-11-23 21:16:28,089 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:28" (1/1) ... [2023-11-23 21:16:28,100 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:28" (1/1) ... [2023-11-23 21:16:28,103 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:28" (1/1) ... [2023-11-23 21:16:28,106 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:16:28,114 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:16:28,115 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:16:28,115 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:16:28,116 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:28" (1/1) ... [2023-11-23 21:16:28,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:16:28,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f37c2f-3eeb-4fa7-b591-ce16193ea792/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:28,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f37c2f-3eeb-4fa7-b591-ce16193ea792/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:16:28,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f37c2f-3eeb-4fa7-b591-ce16193ea792/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:16:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:16:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:16:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:16:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:16:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:16:28,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:16:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:16:28,267 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:16:28,269 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:16:28,452 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:16:28,526 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:16:28,526 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 21:16:28,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:28 BoogieIcfgContainer [2023-11-23 21:16:28,541 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:16:28,544 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:16:28,544 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:16:28,548 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:16:28,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:16:27" (1/3) ... [2023-11-23 21:16:28,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725baa6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:28, skipping insertion in model container [2023-11-23 21:16:28,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:28" (2/3) ... [2023-11-23 21:16:28,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725baa6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:28, skipping insertion in model container [2023-11-23 21:16:28,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:28" (3/3) ... [2023-11-23 21:16:28,554 INFO L112 eAbstractionObserver]: Analyzing ICFG eqn3f.c [2023-11-23 21:16:28,587 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:16:28,587 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:16:28,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:16:28,658 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@4c422e73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:16:28,659 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:16:28,664 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) [2023-11-23 21:16:28,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:16:28,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:28,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:28,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:28,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:28,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1623236014, now seen corresponding path program 1 times [2023-11-23 21:16:28,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:28,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117918136] [2023-11-23 21:16:28,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:28,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:28,858 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:16:28,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1867000781] [2023-11-23 21:16:28,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:28,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:28,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f37c2f-3eeb-4fa7-b591-ce16193ea792/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:28,861 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f37c2f-3eeb-4fa7-b591-ce16193ea792/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:28,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f37c2f-3eeb-4fa7-b591-ce16193ea792/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:16:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:16:28,940 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:16:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:16:28,977 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:16:28,980 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:16:28,981 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:16:29,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f37c2f-3eeb-4fa7-b591-ce16193ea792/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:16:29,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f37c2f-3eeb-4fa7-b591-ce16193ea792/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:29,209 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:16:29,213 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:16:29,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:16:29 BoogieIcfgContainer [2023-11-23 21:16:29,234 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:16:29,235 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:16:29,235 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:16:29,235 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:16:29,236 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:28" (3/4) ... [2023-11-23 21:16:29,236 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-23 21:16:29,275 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f37c2f-3eeb-4fa7-b591-ce16193ea792/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:16:29,276 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:16:29,277 INFO L158 Benchmark]: Toolchain (without parser) took 1582.49ms. Allocated memory was 138.4MB in the beginning and 182.5MB in the end (delta: 44.0MB). Free memory was 93.5MB in the beginning and 132.4MB in the end (delta: -38.8MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2023-11-23 21:16:29,278 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 138.4MB. Free memory was 85.3MB in the beginning and 85.2MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:16:29,278 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.59ms. Allocated memory is still 138.4MB. Free memory was 93.3MB in the beginning and 82.1MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:16:29,279 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.08ms. Allocated memory is still 138.4MB. Free memory was 82.1MB in the beginning and 80.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:16:29,280 INFO L158 Benchmark]: Boogie Preprocessor took 57.26ms. Allocated memory is still 138.4MB. Free memory was 80.4MB in the beginning and 79.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:16:29,280 INFO L158 Benchmark]: RCFGBuilder took 426.44ms. Allocated memory was 138.4MB in the beginning and 182.5MB in the end (delta: 44.0MB). Free memory was 79.2MB in the beginning and 150.7MB in the end (delta: -71.5MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2023-11-23 21:16:29,281 INFO L158 Benchmark]: TraceAbstraction took 690.28ms. Allocated memory is still 182.5MB. Free memory was 150.0MB in the beginning and 134.5MB in the end (delta: 15.5MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2023-11-23 21:16:29,282 INFO L158 Benchmark]: Witness Printer took 41.12ms. Allocated memory is still 182.5MB. Free memory was 134.5MB in the beginning and 132.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:16:29,286 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 138.4MB. Free memory was 85.3MB in the beginning and 85.2MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 308.59ms. Allocated memory is still 138.4MB. Free memory was 93.3MB in the beginning and 82.1MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.08ms. Allocated memory is still 138.4MB. Free memory was 82.1MB in the beginning and 80.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 57.26ms. Allocated memory is still 138.4MB. Free memory was 80.4MB in the beginning and 79.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 426.44ms. Allocated memory was 138.4MB in the beginning and 182.5MB in the end (delta: 44.0MB). Free memory was 79.2MB in the beginning and 150.7MB in the end (delta: -71.5MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * TraceAbstraction took 690.28ms. Allocated memory is still 182.5MB. Free memory was 150.0MB in the beginning and 134.5MB in the end (delta: 15.5MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * Witness Printer took 41.12ms. Allocated memory is still 182.5MB. Free memory was 134.5MB in the beginning and 132.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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