./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_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_42418c6a-f25a-4fd0-a529-cda89bd6d263/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42418c6a-f25a-4fd0-a529-cda89bd6d263/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_42418c6a-f25a-4fd0-a529-cda89bd6d263/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42418c6a-f25a-4fd0-a529-cda89bd6d263/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-31.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42418c6a-f25a-4fd0-a529-cda89bd6d263/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_42418c6a-f25a-4fd0-a529-cda89bd6d263/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 8a2631f953a342b9ccba2223861eaca9a227bd30acbeeb97e8e7f1036b541190 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:16:13,669 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:16:13,725 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42418c6a-f25a-4fd0-a529-cda89bd6d263/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 08:16:13,730 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:16:13,730 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:16:13,750 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:16:13,751 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:16:13,751 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:16:13,752 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:16:13,752 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:16:13,752 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:16:13,752 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:16:13,752 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:16:13,752 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:16:13,752 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:16:13,753 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:16:13,753 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:16:13,753 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:16:13,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:16:13,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:16:13,753 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:16:13,753 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:16:13,753 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:16:13,753 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:16:13,753 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:16:13,753 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:16:13,753 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:16:13,753 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:16:13,754 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:16:13,754 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:16:13,754 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:16:13,754 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:16:13,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:16:13,754 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:16:13,754 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:16:13,754 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:16:13,754 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:16:13,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:16:13,754 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:16:13,755 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:16:13,755 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:16:13,755 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:16:13,755 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:16:13,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:16:13,755 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:16:13,755 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:16:13,755 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:16:13,755 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:16:13,755 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_42418c6a-f25a-4fd0-a529-cda89bd6d263/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 -> 8a2631f953a342b9ccba2223861eaca9a227bd30acbeeb97e8e7f1036b541190 [2024-12-02 08:16:13,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:16:14,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:16:14,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:16:14,004 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:16:14,004 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:16:14,005 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42418c6a-f25a-4fd0-a529-cda89bd6d263/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-31.i [2024-12-02 08:16:16,663 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42418c6a-f25a-4fd0-a529-cda89bd6d263/bin/uautomizer-verify-84ZbGMXZE1/data/56b70b020/3ee9c87716b54d8b9caf3fc5faf592ea/FLAG9ca3cefe3 [2024-12-02 08:16:16,888 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:16:16,888 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42418c6a-f25a-4fd0-a529-cda89bd6d263/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-31.i [2024-12-02 08:16:16,897 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42418c6a-f25a-4fd0-a529-cda89bd6d263/bin/uautomizer-verify-84ZbGMXZE1/data/56b70b020/3ee9c87716b54d8b9caf3fc5faf592ea/FLAG9ca3cefe3 [2024-12-02 08:16:17,240 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42418c6a-f25a-4fd0-a529-cda89bd6d263/bin/uautomizer-verify-84ZbGMXZE1/data/56b70b020/3ee9c87716b54d8b9caf3fc5faf592ea [2024-12-02 08:16:17,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:16:17,243 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:16:17,244 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:16:17,244 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:16:17,248 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:16:17,249 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:16:17" (1/1) ... [2024-12-02 08:16:17,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f597296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:17, skipping insertion in model container [2024-12-02 08:16:17,250 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:16:17" (1/1) ... [2024-12-02 08:16:17,269 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:16:17,384 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_42418c6a-f25a-4fd0-a529-cda89bd6d263/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-31.i[919,932] [2024-12-02 08:16:17,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:16:17,456 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:16:17,464 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_42418c6a-f25a-4fd0-a529-cda89bd6d263/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-31.i[919,932] [2024-12-02 08:16:17,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:16:17,515 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:16:17,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:17 WrapperNode [2024-12-02 08:16:17,515 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:16:17,516 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:16:17,517 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:16:17,517 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:16:17,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:17" (1/1) ... [2024-12-02 08:16:17,534 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:17" (1/1) ... [2024-12-02 08:16:17,570 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 265 [2024-12-02 08:16:17,570 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:16:17,571 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:16:17,571 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:16:17,571 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:16:17,578 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:17" (1/1) ... [2024-12-02 08:16:17,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:17" (1/1) ... [2024-12-02 08:16:17,582 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:17" (1/1) ... [2024-12-02 08:16:17,601 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 08:16:17,602 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:17" (1/1) ... [2024-12-02 08:16:17,602 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:17" (1/1) ... [2024-12-02 08:16:17,612 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:17" (1/1) ... [2024-12-02 08:16:17,614 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:17" (1/1) ... [2024-12-02 08:16:17,618 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:17" (1/1) ... [2024-12-02 08:16:17,621 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:17" (1/1) ... [2024-12-02 08:16:17,623 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:17" (1/1) ... [2024-12-02 08:16:17,629 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:16:17,629 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:16:17,629 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:16:17,629 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:16:17,630 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:17" (1/1) ... [2024-12-02 08:16:17,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:16:17,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42418c6a-f25a-4fd0-a529-cda89bd6d263/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:16:17,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42418c6a-f25a-4fd0-a529-cda89bd6d263/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:16:17,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42418c6a-f25a-4fd0-a529-cda89bd6d263/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:16:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:16:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 08:16:17,675 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 08:16:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:16:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:16:17,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:16:17,748 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:16:17,749 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:16:18,126 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-12-02 08:16:18,126 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:16:18,136 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:16:18,136 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 08:16:18,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:16:18 BoogieIcfgContainer [2024-12-02 08:16:18,137 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:16:18,139 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:16:18,139 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:16:18,143 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:16:18,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:16:17" (1/3) ... [2024-12-02 08:16:18,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d2f5df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:16:18, skipping insertion in model container [2024-12-02 08:16:18,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:16:17" (2/3) ... [2024-12-02 08:16:18,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d2f5df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:16:18, skipping insertion in model container [2024-12-02 08:16:18,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:16:18" (3/3) ... [2024-12-02 08:16:18,145 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-31.i [2024-12-02 08:16:18,156 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:16:18,158 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-31.i that has 2 procedures, 120 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 08:16:18,218 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:16:18,229 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;@51a9d1c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:16:18,229 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 08:16:18,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 69 states have (on average 1.391304347826087) internal successors, (96), 70 states have internal predecessors, (96), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-12-02 08:16:18,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-12-02 08:16:18,247 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:16:18,248 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:16:18,248 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:16:18,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:18,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1720774718, now seen corresponding path program 1 times [2024-12-02 08:16:18,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:18,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289980700] [2024-12-02 08:16:18,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:18,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:18,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2024-12-02 08:16:18,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:16:18,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289980700] [2024-12-02 08:16:18,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289980700] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:16:18,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028573663] [2024-12-02 08:16:18,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:18,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:16:18,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42418c6a-f25a-4fd0-a529-cda89bd6d263/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:16:18,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42418c6a-f25a-4fd0-a529-cda89bd6d263/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:16:18,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42418c6a-f25a-4fd0-a529-cda89bd6d263/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:16:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:18,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 08:16:18,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:16:18,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2024-12-02 08:16:18,852 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:16:18,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028573663] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:16:18,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:16:18,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 08:16:18,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231409676] [2024-12-02 08:16:18,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:16:18,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:16:18,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:16:18,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:16:18,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:16:18,880 INFO L87 Difference]: Start difference. First operand has 120 states, 69 states have (on average 1.391304347826087) internal successors, (96), 70 states have internal predecessors, (96), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 08:16:18,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:16:18,910 INFO L93 Difference]: Finished difference Result 233 states and 426 transitions. [2024-12-02 08:16:18,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:16:18,912 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 290 [2024-12-02 08:16:18,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:16:18,918 INFO L225 Difference]: With dead ends: 233 [2024-12-02 08:16:18,919 INFO L226 Difference]: Without dead ends: 116 [2024-12-02 08:16:18,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 291 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 08:16:18,925 INFO L435 NwaCegarLoop]: 185 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, 185 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 08:16:18,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:16:18,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-12-02 08:16:18,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-12-02 08:16:18,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 66 states have internal predecessors, (89), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-12-02 08:16:18,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 185 transitions. [2024-12-02 08:16:18,977 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 185 transitions. Word has length 290 [2024-12-02 08:16:18,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:16:18,977 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 185 transitions. [2024-12-02 08:16:18,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 08:16:18,978 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 185 transitions. [2024-12-02 08:16:18,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-12-02 08:16:18,983 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:16:18,984 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:16:18,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42418c6a-f25a-4fd0-a529-cda89bd6d263/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:16:19,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42418c6a-f25a-4fd0-a529-cda89bd6d263/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 08:16:19,185 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:16:19,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:19,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1054864834, now seen corresponding path program 1 times [2024-12-02 08:16:19,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:19,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762676153] [2024-12-02 08:16:19,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:19,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 08:16:19,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:16:19,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762676153] [2024-12-02 08:16:19,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762676153] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:16:19,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:16:19,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:16:19,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053624216] [2024-12-02 08:16:19,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:16:19,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:16:19,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:16:19,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:16:19,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:16:19,455 INFO L87 Difference]: Start difference. First operand 116 states and 185 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 08:16:19,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:16:19,533 INFO L93 Difference]: Finished difference Result 341 states and 547 transitions. [2024-12-02 08:16:19,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:16:19,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 290 [2024-12-02 08:16:19,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:16:19,538 INFO L225 Difference]: With dead ends: 341 [2024-12-02 08:16:19,538 INFO L226 Difference]: Without dead ends: 228 [2024-12-02 08:16:19,539 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 08:16:19,540 INFO L435 NwaCegarLoop]: 336 mSDtfsCounter, 169 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 510 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 08:16:19,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 510 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:16:19,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-12-02 08:16:19,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 129. [2024-12-02 08:16:19,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 79 states have (on average 1.4050632911392404) internal successors, (111), 79 states have internal predecessors, (111), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-12-02 08:16:19,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 207 transitions. [2024-12-02 08:16:19,566 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 207 transitions. Word has length 290 [2024-12-02 08:16:19,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:16:19,568 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 207 transitions. [2024-12-02 08:16:19,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 08:16:19,569 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 207 transitions. [2024-12-02 08:16:19,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-12-02 08:16:19,574 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:16:19,574 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:16:19,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:16:19,574 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:16:19,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:19,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2065982084, now seen corresponding path program 1 times [2024-12-02 08:16:19,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:19,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953576573] [2024-12-02 08:16:19,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:19,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:20,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 08:16:20,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:16:20,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953576573] [2024-12-02 08:16:20,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953576573] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:16:20,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:16:20,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:16:20,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174877767] [2024-12-02 08:16:20,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:16:20,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:16:20,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:16:20,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:16:20,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:16:20,176 INFO L87 Difference]: Start difference. First operand 129 states and 207 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 08:16:20,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:16:20,465 INFO L93 Difference]: Finished difference Result 345 states and 556 transitions. [2024-12-02 08:16:20,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:16:20,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 290 [2024-12-02 08:16:20,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:16:20,470 INFO L225 Difference]: With dead ends: 345 [2024-12-02 08:16:20,470 INFO L226 Difference]: Without dead ends: 219 [2024-12-02 08:16:20,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:16:20,472 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 63 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:16:20,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 427 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:16:20,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-12-02 08:16:20,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 214. [2024-12-02 08:16:20,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 115 states have (on average 1.3043478260869565) internal successors, (150), 115 states have internal predecessors, (150), 96 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-12-02 08:16:20,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 342 transitions. [2024-12-02 08:16:20,528 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 342 transitions. Word has length 290 [2024-12-02 08:16:20,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:16:20,529 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 342 transitions. [2024-12-02 08:16:20,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 08:16:20,529 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 342 transitions. [2024-12-02 08:16:20,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-12-02 08:16:20,532 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:16:20,533 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:16:20,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:16:20,533 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:16:20,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:20,534 INFO L85 PathProgramCache]: Analyzing trace with hash 640637310, now seen corresponding path program 1 times [2024-12-02 08:16:20,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:20,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039717466] [2024-12-02 08:16:20,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:20,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat