./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-programs/Problem103_label44.c --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_efd84f8b-18b2-466c-b0fc-f391c6b25065/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd84f8b-18b2-466c-b0fc-f391c6b25065/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_efd84f8b-18b2-466c-b0fc-f391c6b25065/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd84f8b-18b2-466c-b0fc-f391c6b25065/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-programs/Problem103_label44.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd84f8b-18b2-466c-b0fc-f391c6b25065/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_efd84f8b-18b2-466c-b0fc-f391c6b25065/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 31be38b099bf8c5491c172d044196dd2b7e7bdea7e23c076e8ce2f5635473617 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:51:23,391 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:51:23,452 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd84f8b-18b2-466c-b0fc-f391c6b25065/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 06:51:23,457 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:51:23,457 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:51:23,481 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:51:23,482 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:51:23,482 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:51:23,482 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:51:23,482 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:51:23,483 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:51:23,483 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:51:23,483 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:51:23,483 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:51:23,483 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:51:23,484 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:51:23,484 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:51:23,484 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:51:23,484 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:51:23,484 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:51:23,484 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:51:23,484 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:51:23,484 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:51:23,484 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:51:23,485 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:51:23,485 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:51:23,485 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:51:23,485 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:51:23,485 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:51:23,485 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:51:23,485 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:51:23,485 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:51:23,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:51:23,485 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:51:23,486 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:51:23,486 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:51:23,486 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:51:23,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:51:23,486 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:51:23,486 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:51:23,486 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:51:23,486 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:51:23,486 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:51:23,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:51:23,487 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:51:23,487 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:51:23,487 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:51:23,487 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:51:23,487 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_efd84f8b-18b2-466c-b0fc-f391c6b25065/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 -> 31be38b099bf8c5491c172d044196dd2b7e7bdea7e23c076e8ce2f5635473617 [2024-12-02 06:51:23,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:51:23,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:51:23,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:51:23,733 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:51:23,733 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:51:23,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd84f8b-18b2-466c-b0fc-f391c6b25065/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/eca-programs/Problem103_label44.c [2024-12-02 06:51:26,475 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd84f8b-18b2-466c-b0fc-f391c6b25065/bin/uautomizer-verify-84ZbGMXZE1/data/0194cb741/ed87b279d08d40f09a0f5736f1a48cd7/FLAG9504da02d [2024-12-02 06:51:28,330 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:51:28,331 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd84f8b-18b2-466c-b0fc-f391c6b25065/sv-benchmarks/c/eca-programs/Problem103_label44.c [2024-12-02 06:51:28,595 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd84f8b-18b2-466c-b0fc-f391c6b25065/bin/uautomizer-verify-84ZbGMXZE1/data/0194cb741/ed87b279d08d40f09a0f5736f1a48cd7/FLAG9504da02d [2024-12-02 06:51:28,606 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd84f8b-18b2-466c-b0fc-f391c6b25065/bin/uautomizer-verify-84ZbGMXZE1/data/0194cb741/ed87b279d08d40f09a0f5736f1a48cd7 [2024-12-02 06:51:28,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:51:28,609 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:51:28,610 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:51:28,610 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:51:28,613 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:51:28,614 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:51:28" (1/1) ... [2024-12-02 06:51:28,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f65803c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:28, skipping insertion in model container [2024-12-02 06:51:28,614 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:51:28" (1/1) ... [2024-12-02 06:51:29,645 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:51:51,936 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_efd84f8b-18b2-466c-b0fc-f391c6b25065/sv-benchmarks/c/eca-programs/Problem103_label44.c[6302927,6302940] [2024-12-02 06:51:52,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:51:52,064 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:52:04,373 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_efd84f8b-18b2-466c-b0fc-f391c6b25065/sv-benchmarks/c/eca-programs/Problem103_label44.c[6302927,6302940] [2024-12-02 06:52:04,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:52:07,750 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:52:07,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:07 WrapperNode [2024-12-02 06:52:07,751 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:52:07,752 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:52:07,752 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:52:07,752 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:52:07,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:07" (1/1) ... [2024-12-02 06:52:08,510 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:07" (1/1) ... [2024-12-02 06:52:11,720 INFO L138 Inliner]: procedures = 88, calls = 82, calls flagged for inlining = 77, calls inlined = 77, statements flattened = 197898 [2024-12-02 06:52:11,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:52:11,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:52:11,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:52:11,721 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:52:11,729 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:07" (1/1) ... [2024-12-02 06:52:11,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:07" (1/1) ... [2024-12-02 06:52:12,507 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:07" (1/1) ... [2024-12-02 06:52:12,868 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 06:52:12,869 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:07" (1/1) ... [2024-12-02 06:52:12,869 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:07" (1/1) ... [2024-12-02 06:52:14,121 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:07" (1/1) ... [2024-12-02 06:52:14,204 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:07" (1/1) ... [2024-12-02 06:52:14,432 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:07" (1/1) ... [2024-12-02 06:52:14,550 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:07" (1/1) ... [2024-12-02 06:52:14,657 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:07" (1/1) ... [2024-12-02 06:52:15,562 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:52:15,563 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:52:15,564 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:52:15,564 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:52:15,565 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:07" (1/1) ... [2024-12-02 06:52:15,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:52:15,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd84f8b-18b2-466c-b0fc-f391c6b25065/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:52:15,597 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd84f8b-18b2-466c-b0fc-f391c6b25065/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:52:15,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd84f8b-18b2-466c-b0fc-f391c6b25065/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:52:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:52:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:52:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:52:15,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:52:15,790 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:52:15,792 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:53:36,463 INFO L? ?]: Removed 16411 outVars from TransFormulas that were not future-live. [2024-12-02 06:53:36,463 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:53:36,669 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:53:36,669 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 06:53:36,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:53:36 BoogieIcfgContainer [2024-12-02 06:53:36,669 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:53:36,671 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:53:36,672 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:53:36,676 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:53:36,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:51:28" (1/3) ... [2024-12-02 06:53:36,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5062c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:53:36, skipping insertion in model container [2024-12-02 06:53:36,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:07" (2/3) ... [2024-12-02 06:53:36,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5062c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:53:36, skipping insertion in model container [2024-12-02 06:53:36,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:53:36" (3/3) ... [2024-12-02 06:53:36,678 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem103_label44.c [2024-12-02 06:53:36,693 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:53:36,696 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem103_label44.c that has 1 procedures, 20356 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 06:53:37,043 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:53:37,054 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;@66b89ea4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:53:37,054 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:53:37,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 20356 states, 20354 states have (on average 1.902525302151911) internal successors, (38724), 20355 states have internal predecessors, (38724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:53:39,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16483 [2024-12-02 06:53:39,225 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:53:39,231 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:53:39,232 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:53:39,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:53:39,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1808976073, now seen corresponding path program 1 times [2024-12-02 06:53:39,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:53:39,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423068155] [2024-12-02 06:53:39,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:53:39,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:53:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:54:39,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:54:39,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:54:39,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423068155] [2024-12-02 06:54:39,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423068155] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:54:39,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:54:39,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:54:39,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291049237] [2024-12-02 06:54:39,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:54:39,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:54:39,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:54:39,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:54:39,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:54:39,805 INFO L87 Difference]: Start difference. First operand has 20356 states, 20354 states have (on average 1.902525302151911) internal successors, (38724), 20355 states have internal predecessors, (38724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5494.0) internal successors, (16482), 2 states have internal predecessors, (16482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:43,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:55:43,038 INFO L93 Difference]: Finished difference Result 59374 states and 113808 transitions. [2024-12-02 06:55:43,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:55:43,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5494.0) internal successors, (16482), 2 states have internal predecessors, (16482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16482 [2024-12-02 06:55:43,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:55:43,208 INFO L225 Difference]: With dead ends: 59374 [2024-12-02 06:55:43,208 INFO L226 Difference]: Without dead ends: 38954 [2024-12-02 06:55:43,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 06:55:43,234 INFO L435 NwaCegarLoop]: 7834 mSDtfsCounter, 4645 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 58642 mSolverCounterSat, 15354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4645 SdHoareTripleChecker+Valid, 9503 SdHoareTripleChecker+Invalid, 73996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 15354 IncrementalHoareTripleChecker+Valid, 58642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:55:43,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4645 Valid, 9503 Invalid, 73996 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [15354 Valid, 58642 Invalid, 0 Unknown, 0 Unchecked, 62.0s Time] [2024-12-02 06:55:43,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38954 states. [2024-12-02 06:55:44,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38954 to 37862. [2024-12-02 06:55:44,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37862 states, 37861 states have (on average 1.8639232983809197) internal successors, (70570), 37861 states have internal predecessors, (70570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:44,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37862 states to 37862 states and 70570 transitions. [2024-12-02 06:55:44,495 INFO L78 Accepts]: Start accepts. Automaton has 37862 states and 70570 transitions. Word has length 16482 [2024-12-02 06:55:44,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:55:44,522 INFO L471 AbstractCegarLoop]: Abstraction has 37862 states and 70570 transitions. [2024-12-02 06:55:44,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5494.0) internal successors, (16482), 2 states have internal predecessors, (16482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:44,526 INFO L276 IsEmpty]: Start isEmpty. Operand 37862 states and 70570 transitions. [2024-12-02 06:55:45,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16487 [2024-12-02 06:55:45,999 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:55:46,005 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:55:46,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:55:46,006 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:55:46,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:55:46,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1804093096, now seen corresponding path program 1 times [2024-12-02 06:55:46,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:55:46,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682742777] [2024-12-02 06:55:46,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:55:46,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:55:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat