./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-28.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-28.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8b23d102682de07e2751c0ad8b08e4c8b5c1b64cbe10629d78dc961e5036ebe2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:59:52,291 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:59:52,346 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 06:59:52,350 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:59:52,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:59:52,371 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:59:52,372 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:59:52,372 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:59:52,372 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:59:52,372 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:59:52,372 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:59:52,372 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:59:52,373 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:59:52,373 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:59:52,373 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:59:52,373 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:59:52,373 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:59:52,373 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:59:52,374 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:59:52,374 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:59:52,374 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:59:52,374 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:59:52,374 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:59:52,374 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:59:52,374 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:59:52,374 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:59:52,374 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:59:52,374 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:59:52,374 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:59:52,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:59:52,375 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:59:52,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:59:52,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:59:52,375 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:59:52,375 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:59:52,375 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:59:52,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:59:52,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:59:52,375 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:59:52,375 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:59:52,375 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:59:52,375 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:59:52,376 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:59:52,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:59:52,376 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:59:52,376 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:59:52,376 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:59:52,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:59:52,376 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1 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 -> Automizer 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 -> 8b23d102682de07e2751c0ad8b08e4c8b5c1b64cbe10629d78dc961e5036ebe2 [2024-12-02 06:59:52,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:59:52,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:59:52,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:59:52,618 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:59:52,618 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:59:52,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-28.i [2024-12-02 06:59:55,270 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/data/46cbf08ea/578e4a2b161648b0914f8c6ce3dd1162/FLAGe609e2ef9 [2024-12-02 06:59:55,471 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:59:55,472 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-28.i [2024-12-02 06:59:55,481 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/data/46cbf08ea/578e4a2b161648b0914f8c6ce3dd1162/FLAGe609e2ef9 [2024-12-02 06:59:55,495 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/data/46cbf08ea/578e4a2b161648b0914f8c6ce3dd1162 [2024-12-02 06:59:55,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:59:55,499 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:59:55,500 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:59:55,500 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:59:55,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:59:55,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:59:55" (1/1) ... [2024-12-02 06:59:55,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dc4ba6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:59:55, skipping insertion in model container [2024-12-02 06:59:55,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:59:55" (1/1) ... [2024-12-02 06:59:55,525 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:59:55,657 WARN L250 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_4329a323-224d-4ab8-b137-c893e0283e20/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-28.i[915,928] [2024-12-02 06:59:55,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:59:55,730 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:59:55,739 WARN L250 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_4329a323-224d-4ab8-b137-c893e0283e20/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-28.i[915,928] [2024-12-02 06:59:55,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:59:55,786 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:59:55,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:59:55 WrapperNode [2024-12-02 06:59:55,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:59:55,787 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:59:55,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:59:55,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:59:55,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:59:55" (1/1) ... [2024-12-02 06:59:55,804 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:59:55" (1/1) ... [2024-12-02 06:59:55,841 INFO L138 Inliner]: procedures = 26, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 171 [2024-12-02 06:59:55,842 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:59:55,842 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:59:55,842 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:59:55,842 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:59:55,851 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:59:55" (1/1) ... [2024-12-02 06:59:55,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:59:55" (1/1) ... [2024-12-02 06:59:55,855 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:59:55" (1/1) ... [2024-12-02 06:59:55,875 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 06:59:55,875 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:59:55" (1/1) ... [2024-12-02 06:59:55,875 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:59:55" (1/1) ... [2024-12-02 06:59:55,884 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:59:55" (1/1) ... [2024-12-02 06:59:55,885 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:59:55" (1/1) ... [2024-12-02 06:59:55,888 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:59:55" (1/1) ... [2024-12-02 06:59:55,891 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:59:55" (1/1) ... [2024-12-02 06:59:55,893 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:59:55" (1/1) ... [2024-12-02 06:59:55,898 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:59:55,899 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:59:55,899 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:59:55,899 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:59:55,900 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:59:55" (1/1) ... [2024-12-02 06:59:55,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:59:55,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:59:55,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:59:55,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:59:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:59:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 06:59:55,954 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 06:59:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:59:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:59:55,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:59:56,022 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:59:56,025 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:59:56,347 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-12-02 06:59:56,347 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:59:56,357 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:59:56,357 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 06:59:56,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:59:56 BoogieIcfgContainer [2024-12-02 06:59:56,357 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:59:56,359 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:59:56,359 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:59:56,363 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:59:56,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:59:55" (1/3) ... [2024-12-02 06:59:56,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22578bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:59:56, skipping insertion in model container [2024-12-02 06:59:56,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:59:55" (2/3) ... [2024-12-02 06:59:56,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22578bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:59:56, skipping insertion in model container [2024-12-02 06:59:56,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:59:56" (3/3) ... [2024-12-02 06:59:56,365 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-28.i [2024-12-02 06:59:56,375 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:59:56,376 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_50-while_file-28.i that has 2 procedures, 77 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 06:59:56,418 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:59:56,428 INFO L333 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, 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;@3dd6fa2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:59:56,428 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:59:56,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 53 states have internal predecessors, (71), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-12-02 06:59:56,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 06:59:56,440 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:59:56,441 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:59:56,441 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:59:56,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:59:56,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1904856090, now seen corresponding path program 1 times [2024-12-02 06:59:56,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:59:56,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067506455] [2024-12-02 06:59:56,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:59:56,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:59:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:59:56,682 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2024-12-02 06:59:56,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:59:56,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067506455] [2024-12-02 06:59:56,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067506455] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:59:56,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490669162] [2024-12-02 06:59:56,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:59:56,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:59:56,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:59:56,686 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:59:56,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:59:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:59:56,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 06:59:56,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:59:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2024-12-02 06:59:56,854 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:59:56,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490669162] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:59:56,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:59:56,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 06:59:56,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373401670] [2024-12-02 06:59:56,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:59:56,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 06:59:56,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:59:56,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 06:59:56,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 06:59:56,876 INFO L87 Difference]: Start difference. First operand has 77 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 53 states have internal predecessors, (71), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2024-12-02 06:59:56,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:59:56,898 INFO L93 Difference]: Finished difference Result 147 states and 246 transitions. [2024-12-02 06:59:56,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 06:59:56,900 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) Word has length 146 [2024-12-02 06:59:56,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:59:56,905 INFO L225 Difference]: With dead ends: 147 [2024-12-02 06:59:56,905 INFO L226 Difference]: Without dead ends: 73 [2024-12-02 06:59:56,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 06:59:56,910 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:59:56,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:59:56,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-12-02 06:59:56,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-12-02 06:59:56,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 49 states have internal predecessors, (64), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-12-02 06:59:56,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 108 transitions. [2024-12-02 06:59:56,944 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 108 transitions. Word has length 146 [2024-12-02 06:59:56,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:59:56,944 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 108 transitions. [2024-12-02 06:59:56,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2024-12-02 06:59:56,944 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 108 transitions. [2024-12-02 06:59:56,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 06:59:56,946 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:59:56,947 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:59:56,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:59:57,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 06:59:57,147 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:59:57,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:59:57,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1543573294, now seen corresponding path program 1 times [2024-12-02 06:59:57,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:59:57,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389055393] [2024-12-02 06:59:57,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:59:57,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:59:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:59:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-12-02 06:59:57,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:59:57,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389055393] [2024-12-02 06:59:57,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389055393] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:59:57,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:59:57,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:59:57,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233854308] [2024-12-02 06:59:57,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:59:57,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:59:57,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:59:57,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:59:57,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:59:57,492 INFO L87 Difference]: Start difference. First operand 73 states and 108 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 06:59:57,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:59:57,849 INFO L93 Difference]: Finished difference Result 321 states and 479 transitions. [2024-12-02 06:59:57,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:59:57,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 146 [2024-12-02 06:59:57,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:59:57,853 INFO L225 Difference]: With dead ends: 321 [2024-12-02 06:59:57,853 INFO L226 Difference]: Without dead ends: 251 [2024-12-02 06:59:57,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:59:57,855 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 291 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:59:57,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 405 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 06:59:57,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-12-02 06:59:57,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 146. [2024-12-02 06:59:57,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 99 states have (on average 1.303030303030303) internal successors, (129), 99 states have internal predecessors, (129), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-12-02 06:59:57,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 217 transitions. [2024-12-02 06:59:57,887 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 217 transitions. Word has length 146 [2024-12-02 06:59:57,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:59:57,888 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 217 transitions. [2024-12-02 06:59:57,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 06:59:57,888 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 217 transitions. [2024-12-02 06:59:57,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 06:59:57,890 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:59:57,891 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:59:57,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:59:57,891 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:59:57,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:59:57,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1150546284, now seen corresponding path program 1 times [2024-12-02 06:59:57,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:59:57,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976976350] [2024-12-02 06:59:57,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:59:57,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:59:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:18,498 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-12-02 07:07:18,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:18,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976976350] [2024-12-02 07:07:18,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976976350] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:18,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:18,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 07:07:18,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472236519] [2024-12-02 07:07:18,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:18,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 07:07:18,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:18,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 07:07:18,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:07:18,501 INFO L87 Difference]: Start difference. First operand 146 states and 217 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 07:07:22,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:22,509 INFO L93 Difference]: Finished difference Result 470 states and 679 transitions. [2024-12-02 07:07:22,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 07:07:22,510 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 146 [2024-12-02 07:07:22,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:22,511 INFO L225 Difference]: With dead ends: 470 [2024-12-02 07:07:22,511 INFO L226 Difference]: Without dead ends: 327 [2024-12-02 07:07:22,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2024-12-02 07:07:22,513 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 181 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:07:22,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 637 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 07:07:22,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-12-02 07:07:22,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 176. [2024-12-02 07:07:22,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 129 states have (on average 1.3643410852713178) internal successors, (176), 129 states have internal predecessors, (176), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-12-02 07:07:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 264 transitions. [2024-12-02 07:07:22,537 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 264 transitions. Word has length 146 [2024-12-02 07:07:22,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:22,537 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 264 transitions. [2024-12-02 07:07:22,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 07:07:22,538 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 264 transitions. [2024-12-02 07:07:22,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 07:07:22,540 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:22,540 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:07:22,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 07:07:22,541 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:22,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:22,541 INFO L85 PathProgramCache]: Analyzing trace with hash 2133303762, now seen corresponding path program 1 times [2024-12-02 07:07:22,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:22,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866068522] [2024-12-02 07:07:22,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:22,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:19,303 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-12-02 07:09:19,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-12-02 07:09:19,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 07:09:19,304 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:111) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.assertTerm(WrapperScript.java:158) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:584) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.postprocessInterpolant(NestedInterpolantsBuilder.java:472) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.buildPredicates(NestedInterpolantsBuilder.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:292) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:227) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 50 more [2024-12-02 07:09:19,308 INFO L158 Benchmark]: Toolchain (without parser) took 563809.66ms. Allocated memory was 142.6MB in the beginning and 704.6MB in the end (delta: 562.0MB). Free memory was 118.5MB in the beginning and 393.4MB in the end (delta: -275.0MB). Peak memory consumption was 429.5MB. Max. memory is 16.1GB. [2024-12-02 07:09:19,309 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:09:19,309 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.84ms. Allocated memory is still 142.6MB. Free memory was 118.2MB in the beginning and 102.5MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 07:09:19,309 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.37ms. Allocated memory is still 142.6MB. Free memory was 102.5MB in the beginning and 97.2MB in the end (delta: 5.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:09:19,310 INFO L158 Benchmark]: Boogie Preprocessor took 55.77ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 86.4MB in the end (delta: 10.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 07:09:19,310 INFO L158 Benchmark]: RCFGBuilder took 458.76ms. Allocated memory is still 142.6MB. Free memory was 86.4MB in the beginning and 111.9MB in the end (delta: -25.5MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. [2024-12-02 07:09:19,310 INFO L158 Benchmark]: TraceAbstraction took 562948.47ms. Allocated memory was 142.6MB in the beginning and 704.6MB in the end (delta: 562.0MB). Free memory was 111.3MB in the beginning and 393.4MB in the end (delta: -282.2MB). Peak memory consumption was 423.7MB. Max. memory is 16.1GB. [2024-12-02 07:09:19,312 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.84ms. Allocated memory is still 142.6MB. Free memory was 118.2MB in the beginning and 102.5MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.37ms. Allocated memory is still 142.6MB. Free memory was 102.5MB in the beginning and 97.2MB in the end (delta: 5.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 55.77ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 86.4MB in the end (delta: 10.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * RCFGBuilder took 458.76ms. Allocated memory is still 142.6MB. Free memory was 86.4MB in the beginning and 111.9MB in the end (delta: -25.5MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. * TraceAbstraction took 562948.47ms. Allocated memory was 142.6MB in the beginning and 704.6MB in the end (delta: 562.0MB). Free memory was 111.3MB in the beginning and 393.4MB in the end (delta: -282.2MB). Peak memory consumption was 423.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-28.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8b23d102682de07e2751c0ad8b08e4c8b5c1b64cbe10629d78dc961e5036ebe2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:09:21,086 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:09:21,163 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 07:09:21,168 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:09:21,169 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:09:21,190 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:09:21,191 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:09:21,191 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:09:21,191 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:09:21,191 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:09:21,191 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:09:21,191 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:09:21,192 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:09:21,192 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:09:21,192 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:09:21,192 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:09:21,192 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:09:21,192 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:09:21,192 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:09:21,193 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:09:21,193 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:09:21,193 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:09:21,193 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:09:21,193 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 07:09:21,193 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 07:09:21,193 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 07:09:21,193 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:09:21,193 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:09:21,194 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:09:21,194 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:09:21,194 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:09:21,194 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:09:21,194 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:09:21,194 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:09:21,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:09:21,194 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:09:21,194 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:09:21,194 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:09:21,194 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:09:21,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:09:21,195 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:09:21,195 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:09:21,195 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:09:21,195 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:09:21,195 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 07:09:21,195 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 07:09:21,195 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:09:21,195 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:09:21,195 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:09:21,196 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:09:21,196 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1 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 -> Automizer 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 -> 8b23d102682de07e2751c0ad8b08e4c8b5c1b64cbe10629d78dc961e5036ebe2 [2024-12-02 07:09:21,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:09:21,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:09:21,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:09:21,436 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:09:21,436 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:09:21,437 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-28.i [2024-12-02 07:09:24,087 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/data/d701915d3/ff42c427787b43cead55cdefa531d12c/FLAGffef48dca [2024-12-02 07:09:24,343 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:09:24,344 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-28.i [2024-12-02 07:09:24,352 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/data/d701915d3/ff42c427787b43cead55cdefa531d12c/FLAGffef48dca [2024-12-02 07:09:24,670 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/data/d701915d3/ff42c427787b43cead55cdefa531d12c [2024-12-02 07:09:24,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:09:24,673 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:09:24,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:09:24,674 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:09:24,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:09:24,677 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:09:24" (1/1) ... [2024-12-02 07:09:24,677 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e743079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:24, skipping insertion in model container [2024-12-02 07:09:24,678 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:09:24" (1/1) ... [2024-12-02 07:09:24,694 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:09:24,814 WARN L250 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_4329a323-224d-4ab8-b137-c893e0283e20/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-28.i[915,928] [2024-12-02 07:09:24,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:09:24,876 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:09:24,883 WARN L250 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_4329a323-224d-4ab8-b137-c893e0283e20/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-28.i[915,928] [2024-12-02 07:09:24,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:09:24,929 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:09:24,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:24 WrapperNode [2024-12-02 07:09:24,929 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:09:24,930 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:09:24,930 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:09:24,930 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:09:24,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:24" (1/1) ... [2024-12-02 07:09:24,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:24" (1/1) ... [2024-12-02 07:09:24,965 INFO L138 Inliner]: procedures = 27, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 152 [2024-12-02 07:09:24,965 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:09:24,966 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:09:24,966 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:09:24,966 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:09:24,974 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:24" (1/1) ... [2024-12-02 07:09:24,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:24" (1/1) ... [2024-12-02 07:09:24,976 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:24" (1/1) ... [2024-12-02 07:09:24,986 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 07:09:24,986 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:24" (1/1) ... [2024-12-02 07:09:24,986 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:24" (1/1) ... [2024-12-02 07:09:24,995 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:24" (1/1) ... [2024-12-02 07:09:24,996 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:24" (1/1) ... [2024-12-02 07:09:24,999 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:24" (1/1) ... [2024-12-02 07:09:25,001 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:24" (1/1) ... [2024-12-02 07:09:25,003 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:24" (1/1) ... [2024-12-02 07:09:25,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:09:25,006 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:09:25,007 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:09:25,007 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:09:25,008 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:24" (1/1) ... [2024-12-02 07:09:25,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:09:25,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:09:25,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:09:25,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:09:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:09:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 07:09:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 07:09:25,063 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 07:09:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:09:25,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:09:25,134 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:09:25,136 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:09:25,863 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-12-02 07:09:25,863 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:09:25,873 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:09:25,874 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 07:09:25,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:09:25 BoogieIcfgContainer [2024-12-02 07:09:25,874 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:09:25,876 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:09:25,876 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:09:25,880 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:09:25,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:09:24" (1/3) ... [2024-12-02 07:09:25,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8289028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:09:25, skipping insertion in model container [2024-12-02 07:09:25,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:24" (2/3) ... [2024-12-02 07:09:25,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8289028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:09:25, skipping insertion in model container [2024-12-02 07:09:25,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:09:25" (3/3) ... [2024-12-02 07:09:25,883 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-28.i [2024-12-02 07:09:25,897 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:09:25,898 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_50-while_file-28.i that has 2 procedures, 70 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 07:09:25,945 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:09:25,954 INFO L333 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, 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;@291441a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:09:25,954 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:09:25,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 46 states have internal predecessors, (61), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-12-02 07:09:25,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 07:09:25,968 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:09:25,969 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:09:25,970 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:09:25,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:09:25,975 INFO L85 PathProgramCache]: Analyzing trace with hash -2013000320, now seen corresponding path program 1 times [2024-12-02 07:09:25,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:09:25,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361790725] [2024-12-02 07:09:25,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:25,984 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 07:09:25,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 07:09:25,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-02 07:09:25,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-12-02 07:09:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:26,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 07:09:26,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:09:26,337 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-12-02 07:09:26,337 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:09:26,337 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:09:26,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361790725] [2024-12-02 07:09:26,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361790725] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:09:26,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:09:26,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:09:26,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481612711] [2024-12-02 07:09:26,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:09:26,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:09:26,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:09:26,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:09:26,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:09:26,359 INFO L87 Difference]: Start difference. First operand has 70 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 46 states have internal predecessors, (61), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-12-02 07:09:26,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:09:26,382 INFO L93 Difference]: Finished difference Result 133 states and 226 transitions. [2024-12-02 07:09:26,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:09:26,383 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 143 [2024-12-02 07:09:26,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:09:26,390 INFO L225 Difference]: With dead ends: 133 [2024-12-02 07:09:26,390 INFO L226 Difference]: Without dead ends: 66 [2024-12-02 07:09:26,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:09:26,396 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:09:26,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:09:26,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-12-02 07:09:26,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-12-02 07:09:26,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 42 states have internal predecessors, (54), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-12-02 07:09:26,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 98 transitions. [2024-12-02 07:09:26,436 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 98 transitions. Word has length 143 [2024-12-02 07:09:26,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:09:26,436 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 98 transitions. [2024-12-02 07:09:26,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-12-02 07:09:26,437 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 98 transitions. [2024-12-02 07:09:26,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 07:09:26,440 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:09:26,440 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:09:26,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-12-02 07:09:26,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 07:09:26,641 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:09:26,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:09:26,642 INFO L85 PathProgramCache]: Analyzing trace with hash 437773256, now seen corresponding path program 1 times [2024-12-02 07:09:26,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:09:26,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040328836] [2024-12-02 07:09:26,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:26,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 07:09:26,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 07:09:26,645 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-02 07:09:26,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4329a323-224d-4ab8-b137-c893e0283e20/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-12-02 07:09:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:26,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 07:09:26,976 INFO L279 TraceCheckSpWp]: Computing forward predicates...