./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.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_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/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_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/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_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/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 10491a2ba1c0af8edd609b5028b1f925d0288ec6e0b405ba8250552a6ddb6463 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:09:51,342 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:09:51,464 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:09:51,471 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:09:51,472 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:09:51,510 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:09:51,511 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:09:51,512 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:09:51,513 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:09:51,518 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:09:51,519 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:09:51,520 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:09:51,521 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:09:51,523 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:09:51,523 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:09:51,524 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:09:51,524 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:09:51,524 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:09:51,525 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:09:51,525 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:09:51,527 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:09:51,528 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:09:51,529 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:09:51,530 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:09:51,530 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:09:51,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:09:51,531 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:09:51,532 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:09:51,532 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:09:51,533 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:09:51,534 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:09:51,535 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:09:51,535 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:09:51,535 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:09:51,536 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:09:51,536 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:09:51,536 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:09:51,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:09:51,537 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:09:51,537 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:09:51,538 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:09:51,538 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:09:51,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:09:51,539 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:09:51,540 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:09:51,540 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:09:51,540 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:09:51,541 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_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10491a2ba1c0af8edd609b5028b1f925d0288ec6e0b405ba8250552a6ddb6463 [2023-11-23 21:09:51,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:09:51,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:09:51,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:09:51,924 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:09:51,924 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:09:51,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c [2023-11-23 21:09:55,280 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:09:55,547 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:09:55,547 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/sv-benchmarks/c/loop-industry-pattern/aiob_4.c [2023-11-23 21:09:55,564 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/data/3d1712f41/0f561c1f5d6b4684aad5cbdc1131d05c/FLAG9f270bd6d [2023-11-23 21:09:55,581 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/data/3d1712f41/0f561c1f5d6b4684aad5cbdc1131d05c [2023-11-23 21:09:55,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:09:55,590 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:09:55,593 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:09:55,594 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:09:55,599 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:09:55,600 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:55" (1/1) ... [2023-11-23 21:09:55,601 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@613bc916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:55, skipping insertion in model container [2023-11-23 21:09:55,601 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:55" (1/1) ... [2023-11-23 21:09:55,647 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:09:55,919 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_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/sv-benchmarks/c/loop-industry-pattern/aiob_4.c[7328,7341] [2023-11-23 21:09:55,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:09:55,935 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:09:56,033 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_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/sv-benchmarks/c/loop-industry-pattern/aiob_4.c[7328,7341] [2023-11-23 21:09:56,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:09:56,050 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:09:56,060 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:09:56,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56 WrapperNode [2023-11-23 21:09:56,061 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:09:56,062 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:09:56,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:09:56,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:09:56,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 21:09:56,118 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 21:09:56,172 INFO L138 Inliner]: procedures = 17, calls = 195, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 330 [2023-11-23 21:09:56,173 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:09:56,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:09:56,173 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:09:56,174 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:09:56,191 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 21:09:56,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 21:09:56,215 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 21:09:56,216 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 21:09:56,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 21:09:56,260 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 21:09:56,277 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 21:09:56,279 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 21:09:56,284 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:09:56,285 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:09:56,285 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:09:56,286 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:09:56,287 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 21:09:56,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:09:56,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:56,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:09:56,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:09:56,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:09:56,383 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-23 21:09:56,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:09:56,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:09:56,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:09:56,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:09:56,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:09:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:09:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:09:56,549 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:09:56,551 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:09:57,184 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:09:57,208 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:09:57,208 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:09:57,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:57 BoogieIcfgContainer [2023-11-23 21:09:57,210 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:09:57,212 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:09:57,213 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:09:57,216 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:09:57,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:09:55" (1/3) ... [2023-11-23 21:09:57,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254a6bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:57, skipping insertion in model container [2023-11-23 21:09:57,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (2/3) ... [2023-11-23 21:09:57,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254a6bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:57, skipping insertion in model container [2023-11-23 21:09:57,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:57" (3/3) ... [2023-11-23 21:09:57,219 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_4.c [2023-11-23 21:09:57,244 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:09:57,244 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:09:57,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:09:57,313 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;@73b49df2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:09:57,314 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:09:57,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 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 21:09:57,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:09:57,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:57,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:09:57,328 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:57,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:57,336 INFO L85 PathProgramCache]: Analyzing trace with hash 64867021, now seen corresponding path program 1 times [2023-11-23 21:09:57,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:57,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082148835] [2023-11-23 21:09:57,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:57,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:58,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:09:58,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:58,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082148835] [2023-11-23 21:09:58,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082148835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:58,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:58,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:09:58,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758903751] [2023-11-23 21:09:58,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:58,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:09:58,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:58,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:09:58,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:09:58,789 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 21:09:58,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:58,883 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2023-11-23 21:09:58,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:09:58,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) Word has length 5 [2023-11-23 21:09:58,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:58,895 INFO L225 Difference]: With dead ends: 25 [2023-11-23 21:09:58,896 INFO L226 Difference]: Without dead ends: 12 [2023-11-23 21:09:58,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:09:58,905 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:58,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 16 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:09:58,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-23 21:09:58,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2023-11-23 21:09:58,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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 21:09:58,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2023-11-23 21:09:58,945 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2023-11-23 21:09:58,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:58,946 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2023-11-23 21:09:58,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 21:09:58,947 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2023-11-23 21:09:58,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:09:58,948 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:58,948 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:58,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:09:58,949 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:58,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:58,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1789376, now seen corresponding path program 1 times [2023-11-23 21:09:58,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:58,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686699171] [2023-11-23 21:09:58,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:58,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:59,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:09:59,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:59,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686699171] [2023-11-23 21:09:59,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686699171] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:09:59,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837080469] [2023-11-23 21:09:59,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:59,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:59,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:59,776 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:09:59,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:10:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:10:00,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:10:00,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:10:00,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:10:00,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:10:00,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:10:00,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837080469] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:10:00,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [303313444] [2023-11-23 21:10:00,532 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-23 21:10:00,533 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:10:00,536 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:10:00,542 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:10:00,542 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:10:06,804 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:10:07,477 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '116#(and (= |ULTIMATE.start_Id_MCDC_89_~Id_MCDC_88#1.offset| 0) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~Id_MCDC_116~0#1| 0) (<= 0 ~Id_MCDC_93~0) (= |ULTIMATE.start___VERIFIER_assert_~Id_MCDC_92#1| 0) (<= 2 |ULTIMATE.start_Id_MCDC_89_~#Id_MCDC_95~0#1.base|) (= |ULTIMATE.start_Id_MCDC_89_#in~Id_MCDC_88#1.offset| 0) (= |ULTIMATE.start_Id_MCDC_89_~#Id_MCDC_95~0#1.offset| 0) (= |ULTIMATE.start_main_~Id_MCDC_115~0#1| 0) (= 0 |ULTIMATE.start_main_~#Id_MCDC_119~0#1.offset|) (<= 2 |ULTIMATE.start_Id_MCDC_89_#in~Id_MCDC_88#1.base|) (<= 2 |ULTIMATE.start_Id_MCDC_89_~Id_MCDC_88#1.base|) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~Id_MCDC_92#1|) (<= 2 |ULTIMATE.start_main_~#Id_MCDC_119~0#1.base|) (<= 0 |ULTIMATE.start_Id_MCDC_89_~Id_MCDC_96~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~Id_MCDC_92#1| 1))' at error location [2023-11-23 21:10:07,478 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:10:07,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:10:07,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-11-23 21:10:07,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129908873] [2023-11-23 21:10:07,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:10:07,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:10:07,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:10:07,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:10:07,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:10:07,482 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 21:10:07,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:10:07,664 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2023-11-23 21:10:07,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:10:07,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) Word has length 9 [2023-11-23 21:10:07,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:10:07,666 INFO L225 Difference]: With dead ends: 26 [2023-11-23 21:10:07,666 INFO L226 Difference]: Without dead ends: 24 [2023-11-23 21:10:07,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:10:07,669 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:10:07,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 18 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:10:07,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-23 21:10:07,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2023-11-23 21:10:07,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 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 21:10:07,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2023-11-23 21:10:07,679 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 9 [2023-11-23 21:10:07,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:10:07,680 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2023-11-23 21:10:07,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 21:10:07,680 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2023-11-23 21:10:07,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 21:10:07,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:07,683 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1] [2023-11-23 21:10:07,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:10:07,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:10:07,895 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:10:07,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:07,896 INFO L85 PathProgramCache]: Analyzing trace with hash 807579033, now seen corresponding path program 2 times [2023-11-23 21:10:07,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:10:07,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276016625] [2023-11-23 21:10:07,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:07,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:10:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:10:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:10:08,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:10:08,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276016625] [2023-11-23 21:10:08,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276016625] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:10:08,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860276973] [2023-11-23 21:10:08,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:10:08,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:10:08,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:08,619 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:10:08,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:10:09,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 21:10:09,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:10:09,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-23 21:10:09,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:10:09,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:10:09,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 17 [2023-11-23 21:10:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 21:10:09,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:10:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 21:10:10,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860276973] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:10:10,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1818675994] [2023-11-23 21:10:10,478 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-23 21:10:10,479 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:10:10,479 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:10:10,480 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:10:10,480 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:10:13,462 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:10:14,476 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '333#(and (= |ULTIMATE.start_Id_MCDC_89_~Id_MCDC_88#1.offset| 0) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~Id_MCDC_116~0#1| 0) (= ~Id_MCDC_93~0 |ULTIMATE.start_Id_MCDC_89_~Id_MCDC_96~0#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~Id_MCDC_92#1| 0) (= |ULTIMATE.start___VERIFIER_assert_~Id_MCDC_92#1| 0) (<= 2 |ULTIMATE.start_Id_MCDC_89_~#Id_MCDC_95~0#1.base|) (= |ULTIMATE.start_Id_MCDC_89_#in~Id_MCDC_88#1.offset| 0) (= |ULTIMATE.start_Id_MCDC_89_~#Id_MCDC_95~0#1.offset| 0) (exists ((v_~Id_MCDC_93~0_21 Int)) (or (and (<= (mod v_~Id_MCDC_93~0_21 4294967296) 41) (not (= (mod (select (select |#memory_int| |ULTIMATE.start_Id_MCDC_89_~#Id_MCDC_95~0#1.base|) (* (mod v_~Id_MCDC_93~0_21 4294967296) 12)) 4294967296) 0)) (= (+ v_~Id_MCDC_93~0_21 1) |ULTIMATE.start_Id_MCDC_89_~Id_MCDC_96~0#1|)) (= v_~Id_MCDC_93~0_21 0))) (= |ULTIMATE.start_main_~Id_MCDC_115~0#1| 0) (= 0 |ULTIMATE.start_main_~#Id_MCDC_119~0#1.offset|) (<= 2 |ULTIMATE.start_Id_MCDC_89_#in~Id_MCDC_88#1.base|) (<= 2 |ULTIMATE.start_Id_MCDC_89_~Id_MCDC_88#1.base|) (<= 2 |ULTIMATE.start_main_~#Id_MCDC_119~0#1.base|) (<= 0 |ULTIMATE.start_Id_MCDC_89_~Id_MCDC_96~0#1|) (<= 42 (mod ~Id_MCDC_93~0 4294967296)))' at error location [2023-11-23 21:10:14,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:10:14,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:10:14,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 23 [2023-11-23 21:10:14,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358267265] [2023-11-23 21:10:14,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:10:14,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 21:10:14,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:10:14,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 21:10:14,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2023-11-23 21:10:14,486 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 23 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 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 21:10:15,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:10:15,377 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2023-11-23 21:10:15,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-23 21:10:15,378 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 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) Word has length 21 [2023-11-23 21:10:15,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:10:15,378 INFO L225 Difference]: With dead ends: 31 [2023-11-23 21:10:15,379 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 21:10:15,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=469, Invalid=1787, Unknown=0, NotChecked=0, Total=2256 [2023-11-23 21:10:15,382 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 49 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:10:15,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:10:15,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 21:10:15,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 21:10:15,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 21:10:15,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 21:10:15,384 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2023-11-23 21:10:15,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:10:15,385 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:10:15,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 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 21:10:15,385 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:10:15,385 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 21:10:15,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:10:15,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:10:15,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:10:15,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 21:10:15,682 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 21:10:15,682 INFO L899 garLoopResultBuilder]: For program point L182(line 182) no Hoare annotation was computed. [2023-11-23 21:10:15,683 INFO L899 garLoopResultBuilder]: For program point L180(lines 180 183) no Hoare annotation was computed. [2023-11-23 21:10:15,683 INFO L899 garLoopResultBuilder]: For program point L180-2(lines 178 185) no Hoare annotation was computed. [2023-11-23 21:10:15,683 INFO L899 garLoopResultBuilder]: For program point L143(lines 143 177) no Hoare annotation was computed. [2023-11-23 21:10:15,683 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 21:10:15,683 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 182) no Hoare annotation was computed. [2023-11-23 21:10:15,683 INFO L899 garLoopResultBuilder]: For program point L171(lines 171 174) no Hoare annotation was computed. [2023-11-23 21:10:15,683 INFO L899 garLoopResultBuilder]: For program point L138-1(lines 138 141) no Hoare annotation was computed. [2023-11-23 21:10:15,684 INFO L895 garLoopResultBuilder]: At program point L138-3(lines 138 141) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_Id_MCDC_89_~#Id_MCDC_95~0#1.offset| 0)) (.cse1 (= (select (select |#memory_int| |ULTIMATE.start_Id_MCDC_89_~#Id_MCDC_95~0#1.base|) 492) 0))) (or (and (= |ULTIMATE.start_Id_MCDC_89_~Id_MCDC_96~0#1| 0) .cse0 .cse1) (let ((.cse2 (mod (+ 4294967295 |ULTIMATE.start_Id_MCDC_89_~Id_MCDC_96~0#1|) 4294967296))) (and (not (= 41 .cse2)) .cse0 (<= .cse2 41) .cse1)))) [2023-11-23 21:10:15,684 INFO L899 garLoopResultBuilder]: For program point L138-4(lines 138 141) no Hoare annotation was computed. [2023-11-23 21:10:15,687 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-11-23 21:10:15,688 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:10:15,701 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~#Id_MCDC_95~0!base][492] could not be translated [2023-11-23 21:10:15,703 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~#Id_MCDC_95~0!base][492] could not be translated [2023-11-23 21:10:15,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:10:15 BoogieIcfgContainer [2023-11-23 21:10:15,704 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:10:15,705 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:10:15,705 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:10:15,706 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:10:15,706 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:57" (3/4) ... [2023-11-23 21:10:15,708 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:10:15,720 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-23 21:10:15,721 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-23 21:10:15,722 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-23 21:10:15,723 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:10:15,723 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:10:15,951 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:10:15,951 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 21:10:15,951 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:10:15,952 INFO L158 Benchmark]: Toolchain (without parser) took 20362.74ms. Allocated memory was 146.8MB in the beginning and 585.1MB in the end (delta: 438.3MB). Free memory was 101.3MB in the beginning and 290.6MB in the end (delta: -189.3MB). Peak memory consumption was 249.8MB. Max. memory is 16.1GB. [2023-11-23 21:10:15,952 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 102.8MB. Free memory is still 54.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:10:15,953 INFO L158 Benchmark]: CACSL2BoogieTranslator took 468.29ms. Allocated memory is still 146.8MB. Free memory was 101.3MB in the beginning and 83.3MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 21:10:15,953 INFO L158 Benchmark]: Boogie Procedure Inliner took 110.26ms. Allocated memory is still 146.8MB. Free memory was 83.3MB in the beginning and 79.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:10:15,954 INFO L158 Benchmark]: Boogie Preprocessor took 111.22ms. Allocated memory is still 146.8MB. Free memory was 79.9MB in the beginning and 77.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:10:15,954 INFO L158 Benchmark]: RCFGBuilder took 924.95ms. Allocated memory is still 146.8MB. Free memory was 77.0MB in the beginning and 78.1MB in the end (delta: -1.2MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2023-11-23 21:10:15,954 INFO L158 Benchmark]: TraceAbstraction took 18492.11ms. Allocated memory was 146.8MB in the beginning and 585.1MB in the end (delta: 438.3MB). Free memory was 77.3MB in the beginning and 305.3MB in the end (delta: -227.9MB). Peak memory consumption was 209.9MB. Max. memory is 16.1GB. [2023-11-23 21:10:15,955 INFO L158 Benchmark]: Witness Printer took 246.34ms. Allocated memory is still 585.1MB. Free memory was 305.3MB in the beginning and 290.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 21:10:15,957 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 102.8MB. Free memory is still 54.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 468.29ms. Allocated memory is still 146.8MB. Free memory was 101.3MB in the beginning and 83.3MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 110.26ms. Allocated memory is still 146.8MB. Free memory was 83.3MB in the beginning and 79.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 111.22ms. Allocated memory is still 146.8MB. Free memory was 79.9MB in the beginning and 77.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 924.95ms. Allocated memory is still 146.8MB. Free memory was 77.0MB in the beginning and 78.1MB in the end (delta: -1.2MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. * TraceAbstraction took 18492.11ms. Allocated memory was 146.8MB in the beginning and 585.1MB in the end (delta: 438.3MB). Free memory was 77.3MB in the beginning and 305.3MB in the end (delta: -227.9MB). Peak memory consumption was 209.9MB. Max. memory is 16.1GB. * Witness Printer took 246.34ms. Allocated memory is still 585.1MB. Free memory was 305.3MB in the beginning and 290.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~#Id_MCDC_95~0!base][492] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~#Id_MCDC_95~0!base][492] could not be translated * 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 - PositiveResult [Line: 182]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.4s, OverallIterations: 3, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 70 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 220 IncrementalHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 12 mSDtfsCounter, 220 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=2, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 8 NumberOfFragments, 41 HoareAnnotationTreeSize, 1 FomulaSimplifications, 17 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 138 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 65 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 88 ConstructedInterpolants, 13 QuantifiedInterpolants, 1018 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1074 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 30/102 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: ((Id_MCDC_96 == 0) || (!((41 == ((4294967295 + Id_MCDC_96) % 4294967296))) && (((4294967295 + Id_MCDC_96) % 4294967296) <= 41))) RESULT: Ultimate proved your program to be correct! [2023-11-23 21:10:15,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd0ea0-1f8a-4f23-a9d1-756e963c4cfd/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE