./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 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_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/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_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/nsqmf.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/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_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/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 39aacadb1ef8d9484ed01fea6a4b942ae6d8d46b70aa8d3c1aaf631adea16a64 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:13:01,382 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:13:01,522 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:13:01,535 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:13:01,539 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:13:01,580 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:13:01,591 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:13:01,592 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:13:01,593 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:13:01,607 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:13:01,607 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:13:01,608 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:13:01,609 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:13:01,611 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:13:01,611 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:13:01,612 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:13:01,612 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:13:01,613 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:13:01,614 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:13:01,614 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:13:01,615 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:13:01,630 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:13:01,631 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:13:01,632 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:13:01,632 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:13:01,632 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:13:01,633 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:13:01,633 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:13:01,634 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:13:01,634 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:13:01,636 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:13:01,636 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:13:01,636 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:13:01,636 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:13:01,637 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:13:01,637 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:13:01,637 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:13:01,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:13:01,638 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:13:01,638 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:13:01,638 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:13:01,639 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:13:01,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:13:01,646 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:13:01,647 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:13:01,647 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:13:01,647 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:13:01,647 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_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39aacadb1ef8d9484ed01fea6a4b942ae6d8d46b70aa8d3c1aaf631adea16a64 [2023-11-23 21:13:01,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:13:01,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:13:01,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:13:01,981 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:13:01,982 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:13:01,983 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/array-fpi/nsqmf.c [2023-11-23 21:13:05,350 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:13:05,591 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:13:05,595 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/sv-benchmarks/c/array-fpi/nsqmf.c [2023-11-23 21:13:05,622 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/bin/utaipan-verify-mE87zJ7Ire/data/17cf1f7f4/74fbc445175d4415b3522914f6569710/FLAGcc69fc61f [2023-11-23 21:13:05,638 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/bin/utaipan-verify-mE87zJ7Ire/data/17cf1f7f4/74fbc445175d4415b3522914f6569710 [2023-11-23 21:13:05,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:13:05,643 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:13:05,645 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:13:05,645 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:13:05,651 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:13:05,652 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:05" (1/1) ... [2023-11-23 21:13:05,653 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a240c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:05, skipping insertion in model container [2023-11-23 21:13:05,654 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:05" (1/1) ... [2023-11-23 21:13:05,679 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:13:05,864 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_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/sv-benchmarks/c/array-fpi/nsqmf.c[588,601] [2023-11-23 21:13:05,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:13:05,925 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:13:05,946 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_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/sv-benchmarks/c/array-fpi/nsqmf.c[588,601] [2023-11-23 21:13:05,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:13:05,987 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:13:05,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:05 WrapperNode [2023-11-23 21:13:05,988 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:13:05,989 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:13:05,989 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:13:05,989 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:13:05,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:05" (1/1) ... [2023-11-23 21:13:06,021 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:05" (1/1) ... [2023-11-23 21:13:06,055 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2023-11-23 21:13:06,056 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:13:06,057 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:13:06,057 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:13:06,057 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:13:06,067 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:05" (1/1) ... [2023-11-23 21:13:06,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:05" (1/1) ... [2023-11-23 21:13:06,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:05" (1/1) ... [2023-11-23 21:13:06,073 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:05" (1/1) ... [2023-11-23 21:13:06,094 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:05" (1/1) ... [2023-11-23 21:13:06,103 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:05" (1/1) ... [2023-11-23 21:13:06,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:05" (1/1) ... [2023-11-23 21:13:06,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:05" (1/1) ... [2023-11-23 21:13:06,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:13:06,108 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:13:06,108 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:13:06,109 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:13:06,110 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:05" (1/1) ... [2023-11-23 21:13:06,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:13:06,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:13:06,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:13:06,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:13:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:13:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:13:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:13:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:13:06,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:13:06,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:13:06,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:13:06,280 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:13:06,282 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:13:06,506 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:13:06,591 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:13:06,591 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 21:13:06,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:13:06 BoogieIcfgContainer [2023-11-23 21:13:06,594 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:13:06,597 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:13:06,598 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:13:06,602 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:13:06,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:13:05" (1/3) ... [2023-11-23 21:13:06,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e16ee6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:13:06, skipping insertion in model container [2023-11-23 21:13:06,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:05" (2/3) ... [2023-11-23 21:13:06,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e16ee6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:13:06, skipping insertion in model container [2023-11-23 21:13:06,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:13:06" (3/3) ... [2023-11-23 21:13:06,606 INFO L112 eAbstractionObserver]: Analyzing ICFG nsqmf.c [2023-11-23 21:13:06,631 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:13:06,631 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:13:06,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:13:06,699 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;@5fb9ed4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:13:06,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:13:06,708 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 21:13:06,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:13:06,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:06,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:06,719 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:06,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:06,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1623236014, now seen corresponding path program 1 times [2023-11-23 21:13:06,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:06,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325329028] [2023-11-23 21:13:06,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:06,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:06,883 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:13:06,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140396880] [2023-11-23 21:13:06,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:06,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:13:06,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:13:06,887 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:13:06,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:13:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:13:06,999 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:13:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:13:07,052 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:13:07,055 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:13:07,067 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:13:07,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:13:07,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:13:07,283 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:13:07,287 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:13:07,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:13:07 BoogieIcfgContainer [2023-11-23 21:13:07,310 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:13:07,311 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:13:07,311 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:13:07,311 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:13:07,312 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:13:06" (3/4) ... [2023-11-23 21:13:07,313 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-23 21:13:07,360 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87925fe0-84a4-43e5-a4d5-5bf7e0cc6e2b/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:13:07,362 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:13:07,364 INFO L158 Benchmark]: Toolchain (without parser) took 1719.94ms. Allocated memory is still 167.8MB. Free memory was 138.4MB in the beginning and 88.1MB in the end (delta: 50.3MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2023-11-23 21:13:07,365 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 125.8MB. Free memory is still 90.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:13:07,365 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.34ms. Allocated memory is still 167.8MB. Free memory was 138.0MB in the beginning and 127.2MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:13:07,366 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.89ms. Allocated memory is still 167.8MB. Free memory was 127.2MB in the beginning and 125.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:13:07,366 INFO L158 Benchmark]: Boogie Preprocessor took 50.92ms. Allocated memory is still 167.8MB. Free memory was 125.5MB in the beginning and 124.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:13:07,367 INFO L158 Benchmark]: RCFGBuilder took 485.81ms. Allocated memory is still 167.8MB. Free memory was 124.0MB in the beginning and 109.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 21:13:07,368 INFO L158 Benchmark]: TraceAbstraction took 712.60ms. Allocated memory is still 167.8MB. Free memory was 109.1MB in the beginning and 90.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 21:13:07,368 INFO L158 Benchmark]: Witness Printer took 51.38ms. Allocated memory is still 167.8MB. Free memory was 90.2MB in the beginning and 88.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:13:07,371 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 125.8MB. Free memory is still 90.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 343.34ms. Allocated memory is still 167.8MB. Free memory was 138.0MB in the beginning and 127.2MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.89ms. Allocated memory is still 167.8MB. Free memory was 127.2MB in the beginning and 125.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.92ms. Allocated memory is still 167.8MB. Free memory was 125.5MB in the beginning and 124.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 485.81ms. Allocated memory is still 167.8MB. Free memory was 124.0MB in the beginning and 109.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 712.60ms. Allocated memory is still 167.8MB. Free memory was 109.1MB in the beginning and 90.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 51.38ms. Allocated memory is still 167.8MB. Free memory was 90.2MB in the beginning and 88.1MB 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] 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