./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/nsqmf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_3a7ec333-0659-4fcd-bb24-63c587d8eadb/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a7ec333-0659-4fcd-bb24-63c587d8eadb/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a7ec333-0659-4fcd-bb24-63c587d8eadb/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a7ec333-0659-4fcd-bb24-63c587d8eadb/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/nsqmf.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a7ec333-0659-4fcd-bb24-63c587d8eadb/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a7ec333-0659-4fcd-bb24-63c587d8eadb/bin/utaipan-verify-NcY6lQBIFX --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 39aacadb1ef8d9484ed01fea6a4b942ae6d8d46b70aa8d3c1aaf631adea16a64 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:08:08,844 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:08:08,973 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a7ec333-0659-4fcd-bb24-63c587d8eadb/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:08:08,979 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:08:08,980 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:08:09,018 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:08:09,019 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:08:09,020 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:08:09,021 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:08:09,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:08:09,027 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:08:09,028 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:08:09,029 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:08:09,030 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:08:09,031 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:08:09,031 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:08:09,032 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:08:09,032 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:08:09,032 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:08:09,033 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:08:09,033 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:08:09,034 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:08:09,035 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:08:09,036 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:08:09,036 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:08:09,037 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:08:09,037 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:08:09,037 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:08:09,038 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:08:09,038 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:08:09,040 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:08:09,040 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:08:09,040 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:08:09,041 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:08:09,041 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:08:09,041 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:08:09,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:08:09,042 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:08:09,043 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:08:09,043 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:08:09,043 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:08:09,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:08:09,044 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:08:09,044 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:08:09,045 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:08:09,045 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_3a7ec333-0659-4fcd-bb24-63c587d8eadb/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a7ec333-0659-4fcd-bb24-63c587d8eadb/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39aacadb1ef8d9484ed01fea6a4b942ae6d8d46b70aa8d3c1aaf631adea16a64 [2023-11-12 00:08:09,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:08:09,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:08:09,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:08:09,425 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:08:09,427 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:08:09,428 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a7ec333-0659-4fcd-bb24-63c587d8eadb/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/array-fpi/nsqmf.c [2023-11-12 00:08:12,508 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:08:12,725 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:08:12,726 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a7ec333-0659-4fcd-bb24-63c587d8eadb/sv-benchmarks/c/array-fpi/nsqmf.c [2023-11-12 00:08:12,742 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a7ec333-0659-4fcd-bb24-63c587d8eadb/bin/utaipan-verify-NcY6lQBIFX/data/80f30ff2a/7c780981686647ddb1f8ac4ef8212169/FLAG438674931 [2023-11-12 00:08:12,758 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a7ec333-0659-4fcd-bb24-63c587d8eadb/bin/utaipan-verify-NcY6lQBIFX/data/80f30ff2a/7c780981686647ddb1f8ac4ef8212169 [2023-11-12 00:08:12,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:08:12,762 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:08:12,763 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:08:12,763 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:08:12,769 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:08:12,770 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:08:12" (1/1) ... [2023-11-12 00:08:12,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f3fc85b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:12, skipping insertion in model container [2023-11-12 00:08:12,772 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:08:12" (1/1) ... [2023-11-12 00:08:12,794 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:08:12,949 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_3a7ec333-0659-4fcd-bb24-63c587d8eadb/sv-benchmarks/c/array-fpi/nsqmf.c[588,601] [2023-11-12 00:08:12,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:08:12,980 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:08:12,994 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_3a7ec333-0659-4fcd-bb24-63c587d8eadb/sv-benchmarks/c/array-fpi/nsqmf.c[588,601] [2023-11-12 00:08:13,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:08:13,014 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:08:13,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13 WrapperNode [2023-11-12 00:08:13,015 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:08:13,016 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:08:13,016 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:08:13,016 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:08:13,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,029 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,048 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2023-11-12 00:08:13,048 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:08:13,049 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:08:13,049 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:08:13,049 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:08:13,057 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,060 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,060 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,066 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,070 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,071 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,072 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,075 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:08:13,075 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:08:13,076 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:08:13,076 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:08:13,077 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (1/1) ... [2023-11-12 00:08:13,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:08:13,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a7ec333-0659-4fcd-bb24-63c587d8eadb/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:08:13,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a7ec333-0659-4fcd-bb24-63c587d8eadb/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:08:13,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a7ec333-0659-4fcd-bb24-63c587d8eadb/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:08:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:08:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:08:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:08:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:08:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:08:13,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:08:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:08:13,215 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:08:13,217 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:08:13,392 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:08:13,449 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:08:13,450 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-12 00:08:13,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:08:13 BoogieIcfgContainer [2023-11-12 00:08:13,453 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:08:13,456 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:08:13,457 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:08:13,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:08:13,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:08:12" (1/3) ... [2023-11-12 00:08:13,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44751166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:08:13, skipping insertion in model container [2023-11-12 00:08:13,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:13" (2/3) ... [2023-11-12 00:08:13,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44751166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:08:13, skipping insertion in model container [2023-11-12 00:08:13,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:08:13" (3/3) ... [2023-11-12 00:08:13,464 INFO L112 eAbstractionObserver]: Analyzing ICFG nsqmf.c [2023-11-12 00:08:13,485 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:08:13,486 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:08:13,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:08:13,534 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;@3b4683d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:08:13,535 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:08:13,538 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) [2023-11-12 00:08:13,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:08:13,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:13,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:13,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:13,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:13,550 INFO L85 PathProgramCache]: Analyzing trace with hash -735732333, now seen corresponding path program 1 times [2023-11-12 00:08:13,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:13,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953396698] [2023-11-12 00:08:13,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:13,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:13,685 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:08:13,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892948116] [2023-11-12 00:08:13,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:13,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:08:13,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a7ec333-0659-4fcd-bb24-63c587d8eadb/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:08:13,693 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a7ec333-0659-4fcd-bb24-63c587d8eadb/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:08:13,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a7ec333-0659-4fcd-bb24-63c587d8eadb/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:08:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:08:13,876 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:08:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:08:13,929 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:08:13,935 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:08:13,937 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:08:13,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a7ec333-0659-4fcd-bb24-63c587d8eadb/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:08:14,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a7ec333-0659-4fcd-bb24-63c587d8eadb/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:08:14,149 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:08:14,152 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:08:14,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:08:14 BoogieIcfgContainer [2023-11-12 00:08:14,182 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:08:14,183 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:08:14,183 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:08:14,183 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:08:14,184 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:08:13" (3/4) ... [2023-11-12 00:08:14,185 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-12 00:08:14,227 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a7ec333-0659-4fcd-bb24-63c587d8eadb/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 00:08:14,227 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:08:14,229 INFO L158 Benchmark]: Toolchain (without parser) took 1467.03ms. Allocated memory was 136.3MB in the beginning and 182.5MB in the end (delta: 46.1MB). Free memory was 92.0MB in the beginning and 145.7MB in the end (delta: -53.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:08:14,229 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 136.3MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:08:14,230 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.09ms. Allocated memory is still 136.3MB. Free memory was 91.7MB in the beginning and 80.8MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 00:08:14,230 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.20ms. Allocated memory is still 136.3MB. Free memory was 80.4MB in the beginning and 78.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:08:14,231 INFO L158 Benchmark]: Boogie Preprocessor took 26.01ms. Allocated memory is still 136.3MB. Free memory was 78.7MB in the beginning and 77.8MB in the end (delta: 913.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:08:14,232 INFO L158 Benchmark]: RCFGBuilder took 377.74ms. Allocated memory is still 136.3MB. Free memory was 77.3MB in the beginning and 62.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 00:08:14,232 INFO L158 Benchmark]: TraceAbstraction took 725.47ms. Allocated memory was 136.3MB in the beginning and 182.5MB in the end (delta: 46.1MB). Free memory was 62.3MB in the beginning and 147.7MB in the end (delta: -85.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:08:14,233 INFO L158 Benchmark]: Witness Printer took 45.03ms. Allocated memory is still 182.5MB. Free memory was 147.7MB in the beginning and 145.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:08:14,237 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 136.3MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.09ms. Allocated memory is still 136.3MB. Free memory was 91.7MB in the beginning and 80.8MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.20ms. Allocated memory is still 136.3MB. Free memory was 80.4MB in the beginning and 78.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.01ms. Allocated memory is still 136.3MB. Free memory was 78.7MB in the beginning and 77.8MB in the end (delta: 913.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 377.74ms. Allocated memory is still 136.3MB. Free memory was 77.3MB in the beginning and 62.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 725.47ms. Allocated memory was 136.3MB in the beginning and 182.5MB in the end (delta: 46.1MB). Free memory was 62.3MB in the beginning and 147.7MB in the end (delta: -85.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 45.03ms. Allocated memory is still 182.5MB. Free memory was 147.7MB in the beginning and 145.7MB in the end (delta: 2.0MB). 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] b[0] = 1 [L32] a[0] = 1 [L34] i=1 VAL [N=1, a={-2:0}, b={-1:0}, i=1] [L34] COND FALSE !(i