./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-31.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_9047d6d7-8b65-4aa3-842d-cd342875850d/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9047d6d7-8b65-4aa3-842d-cd342875850d/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_9047d6d7-8b65-4aa3-842d-cd342875850d/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9047d6d7-8b65-4aa3-842d-cd342875850d/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-31.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9047d6d7-8b65-4aa3-842d-cd342875850d/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_9047d6d7-8b65-4aa3-842d-cd342875850d/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 86d647ec7a81d0bdbb105f00a2f8baf20d2b0ea117dcb47d88d4f39ade918712 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:54:25,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:54:25,409 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9047d6d7-8b65-4aa3-842d-cd342875850d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 08:54:25,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:54:25,415 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:54:25,437 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:54:25,438 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:54:25,438 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:54:25,438 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:54:25,438 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:54:25,438 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:54:25,439 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:54:25,439 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:54:25,439 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:54:25,439 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:54:25,439 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:54:25,439 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:54:25,439 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:54:25,439 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:54:25,440 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:54:25,440 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:54:25,440 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:54:25,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:54:25,440 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:54:25,440 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:54:25,440 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:54:25,440 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:54:25,440 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:54:25,440 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:54:25,440 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:54:25,440 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:54:25,440 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:54:25,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:54:25,441 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:54:25,441 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:54:25,441 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:54:25,441 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:54:25,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:54:25,441 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:54:25,441 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:54:25,441 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:54:25,441 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:54:25,441 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:54:25,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:54:25,442 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:54:25,442 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:54:25,442 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:54:25,442 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:54:25,442 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_9047d6d7-8b65-4aa3-842d-cd342875850d/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 -> 86d647ec7a81d0bdbb105f00a2f8baf20d2b0ea117dcb47d88d4f39ade918712 [2024-12-02 08:54:25,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:54:25,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:54:25,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:54:25,690 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:54:25,690 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:54:25,692 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9047d6d7-8b65-4aa3-842d-cd342875850d/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-31.i [2024-12-02 08:54:28,331 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9047d6d7-8b65-4aa3-842d-cd342875850d/bin/uautomizer-verify-84ZbGMXZE1/data/07ee18152/e7434aca49ed4793851e07d008cf4295/FLAG3bef854d7 [2024-12-02 08:54:28,561 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:54:28,562 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9047d6d7-8b65-4aa3-842d-cd342875850d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-31.i [2024-12-02 08:54:28,571 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9047d6d7-8b65-4aa3-842d-cd342875850d/bin/uautomizer-verify-84ZbGMXZE1/data/07ee18152/e7434aca49ed4793851e07d008cf4295/FLAG3bef854d7 [2024-12-02 08:54:28,584 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9047d6d7-8b65-4aa3-842d-cd342875850d/bin/uautomizer-verify-84ZbGMXZE1/data/07ee18152/e7434aca49ed4793851e07d008cf4295 [2024-12-02 08:54:28,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:54:28,587 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:54:28,588 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:54:28,589 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:54:28,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:54:28,592 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:54:28" (1/1) ... [2024-12-02 08:54:28,593 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f9e34b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:54:28, skipping insertion in model container [2024-12-02 08:54:28,593 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:54:28" (1/1) ... [2024-12-02 08:54:28,610 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:54:28,712 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_9047d6d7-8b65-4aa3-842d-cd342875850d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-31.i[919,932] [2024-12-02 08:54:28,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:54:28,786 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:54:28,794 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_9047d6d7-8b65-4aa3-842d-cd342875850d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-31.i[919,932] [2024-12-02 08:54:28,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:54:28,841 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:54:28,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:54:28 WrapperNode [2024-12-02 08:54:28,842 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:54:28,843 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:54:28,843 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:54:28,843 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:54:28,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:54:28" (1/1) ... [2024-12-02 08:54:28,857 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:54:28" (1/1) ... [2024-12-02 08:54:28,893 INFO L138 Inliner]: procedures = 26, calls = 42, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 209 [2024-12-02 08:54:28,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:54:28,894 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:54:28,894 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:54:28,894 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:54:28,902 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:54:28" (1/1) ... [2024-12-02 08:54:28,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:54:28" (1/1) ... [2024-12-02 08:54:28,906 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:54:28" (1/1) ... [2024-12-02 08:54:28,926 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 08:54:28,926 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:54:28" (1/1) ... [2024-12-02 08:54:28,926 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:54:28" (1/1) ... [2024-12-02 08:54:28,936 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:54:28" (1/1) ... [2024-12-02 08:54:28,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:54:28" (1/1) ... [2024-12-02 08:54:28,942 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:54:28" (1/1) ... [2024-12-02 08:54:28,944 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:54:28" (1/1) ... [2024-12-02 08:54:28,946 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:54:28" (1/1) ... [2024-12-02 08:54:28,950 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:54:28,951 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:54:28,951 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:54:28,951 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:54:28,952 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:54:28" (1/1) ... [2024-12-02 08:54:28,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:54:28,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9047d6d7-8b65-4aa3-842d-cd342875850d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:54:28,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9047d6d7-8b65-4aa3-842d-cd342875850d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:54:28,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9047d6d7-8b65-4aa3-842d-cd342875850d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:54:28,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:54:28,995 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 08:54:28,996 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 08:54:28,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:54:28,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:54:28,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:54:29,060 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:54:29,062 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:54:29,427 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-12-02 08:54:29,427 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:54:29,438 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:54:29,438 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 08:54:29,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:54:29 BoogieIcfgContainer [2024-12-02 08:54:29,438 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:54:29,441 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:54:29,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:54:29,445 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:54:29,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:54:28" (1/3) ... [2024-12-02 08:54:29,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fe2582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:54:29, skipping insertion in model container [2024-12-02 08:54:29,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:54:28" (2/3) ... [2024-12-02 08:54:29,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fe2582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:54:29, skipping insertion in model container [2024-12-02 08:54:29,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:54:29" (3/3) ... [2024-12-02 08:54:29,448 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-31.i [2024-12-02 08:54:29,462 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:54:29,464 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-31.i that has 2 procedures, 92 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 08:54:29,516 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:54:29,527 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;@49a78ac2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:54:29,527 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 08:54:29,531 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 60 states have (on average 1.45) internal successors, (87), 61 states have internal predecessors, (87), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-12-02 08:54:29,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-12-02 08:54:29,542 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:54:29,543 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:54:29,544 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:54:29,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:54:29,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1477446620, now seen corresponding path program 1 times [2024-12-02 08:54:29,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:54:29,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235014879] [2024-12-02 08:54:29,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:54:29,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:54:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:29,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2024-12-02 08:54:29,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:54:29,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235014879] [2024-12-02 08:54:29,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235014879] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:54:29,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885198012] [2024-12-02 08:54:29,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:54:29,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:54:29,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9047d6d7-8b65-4aa3-842d-cd342875850d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:54:29,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9047d6d7-8b65-4aa3-842d-cd342875850d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:54:29,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9047d6d7-8b65-4aa3-842d-cd342875850d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:54:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:30,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 08:54:30,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:54:30,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2024-12-02 08:54:30,039 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:54:30,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885198012] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:54:30,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:54:30,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 08:54:30,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424748260] [2024-12-02 08:54:30,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:54:30,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:54:30,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:54:30,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:54:30,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:54:30,063 INFO L87 Difference]: Start difference. First operand has 92 states, 60 states have (on average 1.45) internal successors, (87), 61 states have internal predecessors, (87), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) [2024-12-02 08:54:30,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:54:30,089 INFO L93 Difference]: Finished difference Result 177 states and 313 transitions. [2024-12-02 08:54:30,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:54:30,090 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) Word has length 186 [2024-12-02 08:54:30,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:54:30,095 INFO L225 Difference]: With dead ends: 177 [2024-12-02 08:54:30,095 INFO L226 Difference]: Without dead ends: 88 [2024-12-02 08:54:30,098 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 187 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 08:54:30,101 INFO L435 NwaCegarLoop]: 138 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, 138 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 08:54:30,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:54:30,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-12-02 08:54:30,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-12-02 08:54:30,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 57 states have (on average 1.4035087719298245) internal successors, (80), 57 states have internal predecessors, (80), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-12-02 08:54:30,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 138 transitions. [2024-12-02 08:54:30,135 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 138 transitions. Word has length 186 [2024-12-02 08:54:30,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:54:30,136 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 138 transitions. [2024-12-02 08:54:30,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) [2024-12-02 08:54:30,136 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 138 transitions. [2024-12-02 08:54:30,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-12-02 08:54:30,139 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:54:30,139 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:54:30,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9047d6d7-8b65-4aa3-842d-cd342875850d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:54:30,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9047d6d7-8b65-4aa3-842d-cd342875850d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 08:54:30,340 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:54:30,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:54:30,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1752136038, now seen corresponding path program 1 times [2024-12-02 08:54:30,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:54:30,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18753888] [2024-12-02 08:54:30,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:54:30,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:54:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:30,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-12-02 08:54:30,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:54:30,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18753888] [2024-12-02 08:54:30,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18753888] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:54:30,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:54:30,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:54:30,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139906862] [2024-12-02 08:54:30,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:54:30,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:54:30,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:54:30,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:54:30,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:54:30,573 INFO L87 Difference]: Start difference. First operand 88 states and 138 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2024-12-02 08:54:30,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:54:30,647 INFO L93 Difference]: Finished difference Result 257 states and 406 transitions. [2024-12-02 08:54:30,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:54:30,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 186 [2024-12-02 08:54:30,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:54:30,650 INFO L225 Difference]: With dead ends: 257 [2024-12-02 08:54:30,650 INFO L226 Difference]: Without dead ends: 172 [2024-12-02 08:54:30,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:54:30,652 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 126 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:54:30,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 386 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:54:30,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-12-02 08:54:30,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 92. [2024-12-02 08:54:30,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.3934426229508197) internal successors, (85), 61 states have internal predecessors, (85), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-12-02 08:54:30,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 143 transitions. [2024-12-02 08:54:30,669 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 143 transitions. Word has length 186 [2024-12-02 08:54:30,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:54:30,670 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 143 transitions. [2024-12-02 08:54:30,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2024-12-02 08:54:30,671 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 143 transitions. [2024-12-02 08:54:30,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-12-02 08:54:30,673 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:54:30,673 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:54:30,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:54:30,674 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:54:30,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:54:30,674 INFO L85 PathProgramCache]: Analyzing trace with hash 731067684, now seen corresponding path program 1 times [2024-12-02 08:54:30,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:54:30,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230702366] [2024-12-02 08:54:30,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:54:30,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:54:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:44,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-12-02 08:54:44,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:54:44,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230702366] [2024-12-02 08:54:44,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230702366] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:54:44,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:54:44,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 08:54:44,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796153600] [2024-12-02 08:54:44,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:54:44,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 08:54:44,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:54:44,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 08:54:44,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-12-02 08:54:44,266 INFO L87 Difference]: Start difference. First operand 92 states and 143 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 3 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2024-12-02 08:54:48,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:54:48,245 INFO L93 Difference]: Finished difference Result 376 states and 566 transitions. [2024-12-02 08:54:48,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 08:54:48,245 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 3 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 186 [2024-12-02 08:54:48,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:54:48,247 INFO L225 Difference]: With dead ends: 376 [2024-12-02 08:54:48,247 INFO L226 Difference]: Without dead ends: 287 [2024-12-02 08:54:48,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2024-12-02 08:54:48,249 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 835 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:54:48,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 586 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 08:54:48,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-12-02 08:54:48,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 156. [2024-12-02 08:54:48,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 120 states have (on average 1.4666666666666666) internal successors, (176), 121 states have internal predecessors, (176), 31 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-12-02 08:54:48,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 238 transitions. [2024-12-02 08:54:48,275 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 238 transitions. Word has length 186 [2024-12-02 08:54:48,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:54:48,275 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 238 transitions. [2024-12-02 08:54:48,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 3 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2024-12-02 08:54:48,276 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 238 transitions. [2024-12-02 08:54:48,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-12-02 08:54:48,279 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:54:48,279 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:54:48,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:54:48,279 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:54:48,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:54:48,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1788892250, now seen corresponding path program 1 times [2024-12-02 08:54:48,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:54:48,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070313901] [2024-12-02 08:54:48,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:54:48,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:54:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-12-02 08:54:52,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:54:52,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070313901] [2024-12-02 08:54:52,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070313901] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:54:52,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:54:52,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 08:54:52,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241488308] [2024-12-02 08:54:52,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:54:52,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 08:54:52,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:54:52,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 08:54:52,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:54:52,332 INFO L87 Difference]: Start difference. First operand 156 states and 238 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2024-12-02 08:54:54,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:54:54,435 INFO L93 Difference]: Finished difference Result 311 states and 451 transitions. [2024-12-02 08:54:54,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 08:54:54,435 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 186 [2024-12-02 08:54:54,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:54:54,437 INFO L225 Difference]: With dead ends: 311 [2024-12-02 08:54:54,437 INFO L226 Difference]: Without dead ends: 309 [2024-12-02 08:54:54,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2024-12-02 08:54:54,438 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 348 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 08:54:54,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 852 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 08:54:54,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-12-02 08:54:54,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 164. [2024-12-02 08:54:54,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 125 states have (on average 1.456) internal successors, (182), 126 states have internal predecessors, (182), 33 states have call successors, (33), 5 states have call predecessors, (33), 5 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-12-02 08:54:54,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 248 transitions. [2024-12-02 08:54:54,466 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 248 transitions. Word has length 186 [2024-12-02 08:54:54,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:54:54,467 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 248 transitions. [2024-12-02 08:54:54,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2024-12-02 08:54:54,467 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 248 transitions. [2024-12-02 08:54:54,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-12-02 08:54:54,470 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:54:54,470 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:54:54,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:54:54,470 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:54:54,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:54:54,471 INFO L85 PathProgramCache]: Analyzing trace with hash -478390834, now seen corresponding path program 1 times [2024-12-02 08:54:54,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:54:54,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752561200] [2024-12-02 08:54:54,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:54:54,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:54:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat