./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex8.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_b0f1a357-ec8b-424f-8bfb-c8a0b3041ef9/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0f1a357-ec8b-424f-8bfb-c8a0b3041ef9/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0f1a357-ec8b-424f-8bfb-c8a0b3041ef9/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0f1a357-ec8b-424f-8bfb-c8a0b3041ef9/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0f1a357-ec8b-424f-8bfb-c8a0b3041ef9/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0f1a357-ec8b-424f-8bfb-c8a0b3041ef9/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e0b97717a770147a51187027f49ce4841280b7c6199e58b9d59e9dd8baf91869 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:42:47,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:42:47,626 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0f1a357-ec8b-424f-8bfb-c8a0b3041ef9/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-19 07:42:47,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:42:47,638 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:42:47,674 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:42:47,675 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:42:47,676 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:42:47,677 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:42:47,682 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:42:47,683 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:42:47,684 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:42:47,684 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:42:47,686 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:42:47,686 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:42:47,687 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:42:47,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:42:47,688 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:42:47,688 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:42:47,689 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:42:47,689 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:42:47,690 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:42:47,690 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:42:47,691 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:42:47,692 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:42:47,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:42:47,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:42:47,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:42:47,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:42:47,694 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:42:47,696 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:42:47,696 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:42:47,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:42:47,697 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:42:47,697 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:42:47,697 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:42:47,698 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:42:47,698 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:42:47,698 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_b0f1a357-ec8b-424f-8bfb-c8a0b3041ef9/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0f1a357-ec8b-424f-8bfb-c8a0b3041ef9/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0b97717a770147a51187027f49ce4841280b7c6199e58b9d59e9dd8baf91869 [2023-11-19 07:42:48,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:42:48,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:42:48,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:42:48,046 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:42:48,046 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:42:48,048 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0f1a357-ec8b-424f-8bfb-c8a0b3041ef9/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex8.i [2023-11-19 07:42:51,242 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:42:51,469 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:42:51,470 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0f1a357-ec8b-424f-8bfb-c8a0b3041ef9/sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex8.i [2023-11-19 07:42:51,478 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0f1a357-ec8b-424f-8bfb-c8a0b3041ef9/bin/uautomizer-verify-uCwYo4JHxu/data/4d6f69950/731679ce68484cbbb16b4aadc34ab4d0/FLAG7851f4bac [2023-11-19 07:42:51,495 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0f1a357-ec8b-424f-8bfb-c8a0b3041ef9/bin/uautomizer-verify-uCwYo4JHxu/data/4d6f69950/731679ce68484cbbb16b4aadc34ab4d0 [2023-11-19 07:42:51,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:42:51,500 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:42:51,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:42:51,501 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:42:51,507 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:42:51,508 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:51" (1/1) ... [2023-11-19 07:42:51,510 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4014e9ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:51, skipping insertion in model container [2023-11-19 07:42:51,510 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:51" (1/1) ... [2023-11-19 07:42:51,532 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:42:51,727 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:42:51,741 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:42:51,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:42:51,771 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:42:51,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:51 WrapperNode [2023-11-19 07:42:51,772 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:42:51,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:42:51,774 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:42:51,774 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:42:51,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:51" (1/1) ... [2023-11-19 07:42:51,790 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:51" (1/1) ... [2023-11-19 07:42:51,809 INFO L138 Inliner]: procedures = 12, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2023-11-19 07:42:51,809 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:42:51,810 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:42:51,810 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:42:51,810 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:42:51,819 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:51" (1/1) ... [2023-11-19 07:42:51,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:51" (1/1) ... [2023-11-19 07:42:51,822 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:51" (1/1) ... [2023-11-19 07:42:51,822 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:51" (1/1) ... [2023-11-19 07:42:51,827 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:51" (1/1) ... [2023-11-19 07:42:51,828 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:51" (1/1) ... [2023-11-19 07:42:51,829 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:51" (1/1) ... [2023-11-19 07:42:51,830 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:51" (1/1) ... [2023-11-19 07:42:51,832 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:42:51,833 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:42:51,833 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:42:51,833 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:42:51,835 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:51" (1/1) ... [2023-11-19 07:42:51,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:42:51,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0f1a357-ec8b-424f-8bfb-c8a0b3041ef9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:51,882 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0f1a357-ec8b-424f-8bfb-c8a0b3041ef9/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:42:51,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0f1a357-ec8b-424f-8bfb-c8a0b3041ef9/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:42:51,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:42:51,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:42:51,920 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-19 07:42:51,921 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-19 07:42:51,921 INFO L130 BoogieDeclarations]: Found specification of procedure g [2023-11-19 07:42:51,922 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2023-11-19 07:42:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:42:51,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:42:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:42:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:42:52,007 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:42:52,010 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:42:52,328 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:42:52,337 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:42:52,337 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:42:52,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:52 BoogieIcfgContainer [2023-11-19 07:42:52,341 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:42:52,343 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:42:52,344 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:42:52,356 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:42:52,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:42:51" (1/3) ... [2023-11-19 07:42:52,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8d5261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:52, skipping insertion in model container [2023-11-19 07:42:52,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:51" (2/3) ... [2023-11-19 07:42:52,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8d5261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:52, skipping insertion in model container [2023-11-19 07:42:52,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:52" (3/3) ... [2023-11-19 07:42:52,360 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_malloc_ex8.i [2023-11-19 07:42:52,383 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:42:52,384 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 07:42:52,463 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:42:52,473 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=PETRI_NET, 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;@5701fa3e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:42:52,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 07:42:52,478 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 22 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:42:52,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 07:42:52,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:52,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:42:52,489 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-19 07:42:52,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:52,495 INFO L85 PathProgramCache]: Analyzing trace with hash 49693311, now seen corresponding path program 1 times [2023-11-19 07:42:52,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:52,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015930707] [2023-11-19 07:42:52,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:52,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:42:52,713 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:42:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:42:52,796 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:42:52,798 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:42:52,800 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2023-11-19 07:42:52,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2023-11-19 07:42:52,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2023-11-19 07:42:52,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2023-11-19 07:42:52,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2023-11-19 07:42:52,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2023-11-19 07:42:52,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:42:52,811 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 07:42:52,818 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:42:52,835 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem2 could not be translated [2023-11-19 07:42:52,836 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem1 could not be translated [2023-11-19 07:42:52,836 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem2 could not be translated [2023-11-19 07:42:52,837 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem1 could not be translated [2023-11-19 07:42:52,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:42:52 BoogieIcfgContainer [2023-11-19 07:42:52,857 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:42:52,860 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:42:52,861 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:42:52,861 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:42:52,862 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:52" (3/4) ... [2023-11-19 07:42:52,865 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 07:42:52,872 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem2 could not be translated [2023-11-19 07:42:52,872 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem1 could not be translated [2023-11-19 07:42:52,875 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem2 could not be translated [2023-11-19 07:42:52,875 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem1 could not be translated [2023-11-19 07:42:52,937 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0f1a357-ec8b-424f-8bfb-c8a0b3041ef9/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:42:52,938 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:42:52,939 INFO L158 Benchmark]: Toolchain (without parser) took 1439.32ms. Allocated memory is still 151.0MB. Free memory was 120.6MB in the beginning and 89.2MB in the end (delta: 31.4MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. [2023-11-19 07:42:52,940 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 151.0MB. Free memory is still 122.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:42:52,946 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.77ms. Allocated memory is still 151.0MB. Free memory was 120.2MB in the beginning and 122.5MB in the end (delta: -2.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:42:52,947 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.63ms. Allocated memory is still 151.0MB. Free memory was 122.5MB in the beginning and 121.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:42:52,948 INFO L158 Benchmark]: Boogie Preprocessor took 22.43ms. Allocated memory is still 151.0MB. Free memory was 121.0MB in the beginning and 119.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:42:52,949 INFO L158 Benchmark]: RCFGBuilder took 507.71ms. Allocated memory is still 151.0MB. Free memory was 119.7MB in the beginning and 107.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:42:52,949 INFO L158 Benchmark]: TraceAbstraction took 514.13ms. Allocated memory is still 151.0MB. Free memory was 107.0MB in the beginning and 91.3MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 07:42:52,950 INFO L158 Benchmark]: Witness Printer took 77.68ms. Allocated memory is still 151.0MB. Free memory was 91.1MB in the beginning and 89.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:42:52,962 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 151.0MB. Free memory is still 122.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.77ms. Allocated memory is still 151.0MB. Free memory was 120.2MB in the beginning and 122.5MB in the end (delta: -2.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.63ms. Allocated memory is still 151.0MB. Free memory was 122.5MB in the beginning and 121.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.43ms. Allocated memory is still 151.0MB. Free memory was 121.0MB in the beginning and 119.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 507.71ms. Allocated memory is still 151.0MB. Free memory was 119.7MB in the beginning and 107.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 514.13ms. Allocated memory is still 151.0MB. Free memory was 107.0MB in the beginning and 91.3MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 77.68ms. Allocated memory is still 151.0MB. Free memory was 91.1MB in the beginning and 89.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem2 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem1 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem2 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem1 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem2 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem1 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem2 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem1 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 13]: integer overflow possible integer overflow possible We found a FailurePath: [L41] int *p1 = malloc(sizeof(int)); [L42] int *p2 = malloc(sizeof(int)); [L44] *p1 = __VERIFIER_nondet_int() [L45] *p2 = __VERIFIER_nondet_int() [L47] CALL f(p1,p2) VAL [p={-3:0}, q={-2:0}] [L13] EXPR \read(*p) [L13] EXPR \read(*q) VAL [p={-3:0}, p={-3:0}, q={-2:0}, q={-2:0}] [L13] *p + *q VAL [p={-3:0}, p={-3:0}, q={-2:0}, q={-2:0}] - UnprovableResult [Line: 13]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 33]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 33]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be incorrect! [2023-11-19 07:42:53,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0f1a357-ec8b-424f-8bfb-c8a0b3041ef9/bin/uautomizer-verify-uCwYo4JHxu/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)