./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_init8_ground-1.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_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_init8_ground-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB --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 dda1041cfa36c4017116912acad0e6776c355afeb5733cf0531e7478051aaa6d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:00:50,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:00:50,371 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:00:50,376 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:00:50,376 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:00:50,400 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:00:50,401 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:00:50,401 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:00:50,401 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:00:50,401 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:00:50,402 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:00:50,402 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:00:50,402 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:00:50,402 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:00:50,402 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:00:50,402 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:00:50,402 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:00:50,403 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:00:50,403 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:00:50,403 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:00:50,403 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:00:50,403 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:00:50,403 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:00:50,403 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:00:50,403 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:00:50,403 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:00:50,404 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:00:50,404 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:00:50,404 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:00:50,404 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:00:50,404 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:00:50,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:00:50,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:00:50,404 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:00:50,404 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:00:50,405 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:00:50,405 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:00:50,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:00:50,405 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:00:50,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:00:50,405 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:00:50,405 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:00:50,405 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:00:50,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:00:50,406 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:00:50,406 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:00:50,406 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:00:50,406 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:00:50,406 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_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB 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 -> dda1041cfa36c4017116912acad0e6776c355afeb5733cf0531e7478051aaa6d [2024-11-28 04:00:50,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:00:50,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:00:50,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:00:50,734 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:00:50,734 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:00:50,736 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-examples/standard_init8_ground-1.i [2024-11-28 04:00:53,884 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/data/d515d9823/e5a596494266445aa2f52f962d33e38a/FLAG4c86ca062 [2024-11-28 04:00:54,159 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:00:54,159 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/sv-benchmarks/c/array-examples/standard_init8_ground-1.i [2024-11-28 04:00:54,168 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/data/d515d9823/e5a596494266445aa2f52f962d33e38a/FLAG4c86ca062 [2024-11-28 04:00:54,188 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/data/d515d9823/e5a596494266445aa2f52f962d33e38a [2024-11-28 04:00:54,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:00:54,195 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:00:54,196 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:00:54,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:00:54,215 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:00:54,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:00:54" (1/1) ... [2024-11-28 04:00:54,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b56ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:54, skipping insertion in model container [2024-11-28 04:00:54,221 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:00:54" (1/1) ... [2024-11-28 04:00:54,248 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:00:54,398 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_72da9afe-f634-443b-ad4b-c6d2d15a4eab/sv-benchmarks/c/array-examples/standard_init8_ground-1.i[816,829] [2024-11-28 04:00:54,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:00:54,447 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:00:54,463 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_72da9afe-f634-443b-ad4b-c6d2d15a4eab/sv-benchmarks/c/array-examples/standard_init8_ground-1.i[816,829] [2024-11-28 04:00:54,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:00:54,509 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:00:54,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:54 WrapperNode [2024-11-28 04:00:54,512 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:00:54,513 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:00:54,514 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:00:54,514 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:00:54,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:54" (1/1) ... [2024-11-28 04:00:54,531 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:54" (1/1) ... [2024-11-28 04:00:54,550 INFO L138 Inliner]: procedures = 15, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2024-11-28 04:00:54,551 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:00:54,552 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:00:54,553 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:00:54,553 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:00:54,563 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:54" (1/1) ... [2024-11-28 04:00:54,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:54" (1/1) ... [2024-11-28 04:00:54,566 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:54" (1/1) ... [2024-11-28 04:00:54,593 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 8 writes are split as follows [0, 8]. [2024-11-28 04:00:54,593 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:54" (1/1) ... [2024-11-28 04:00:54,594 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:54" (1/1) ... [2024-11-28 04:00:54,603 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:54" (1/1) ... [2024-11-28 04:00:54,607 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:54" (1/1) ... [2024-11-28 04:00:54,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:54" (1/1) ... [2024-11-28 04:00:54,615 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:54" (1/1) ... [2024-11-28 04:00:54,616 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:54" (1/1) ... [2024-11-28 04:00:54,618 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:00:54,622 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:00:54,622 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:00:54,622 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:00:54,624 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:54" (1/1) ... [2024-11-28 04:00:54,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:00:54,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:00:54,662 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:00:54,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:00:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:00:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:00:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:00:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:00:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:00:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:00:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:00:54,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:00:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:00:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:00:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:00:54,775 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:00:54,777 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:00:55,005 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-28 04:00:55,005 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:00:55,017 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:00:55,018 INFO L312 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-28 04:00:55,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:00:55 BoogieIcfgContainer [2024-11-28 04:00:55,018 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:00:55,022 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:00:55,022 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:00:55,029 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:00:55,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:00:54" (1/3) ... [2024-11-28 04:00:55,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311b76de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:00:55, skipping insertion in model container [2024-11-28 04:00:55,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:54" (2/3) ... [2024-11-28 04:00:55,033 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311b76de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:00:55, skipping insertion in model container [2024-11-28 04:00:55,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:00:55" (3/3) ... [2024-11-28 04:00:55,034 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_init8_ground-1.i [2024-11-28 04:00:55,053 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:00:55,055 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_init8_ground-1.i that has 1 procedures, 36 locations, 1 initial locations, 9 loop locations, and 1 error locations. [2024-11-28 04:00:55,133 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:00:55,147 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;@5b52a816, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:00:55,147 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:00:55,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 34 states have (on average 1.588235294117647) internal successors, (54), 35 states have internal predecessors, (54), 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) [2024-11-28 04:00:55,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-28 04:00:55,160 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:00:55,161 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] [2024-11-28 04:00:55,161 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:00:55,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:00:55,167 INFO L85 PathProgramCache]: Analyzing trace with hash 970613073, now seen corresponding path program 1 times [2024-11-28 04:00:55,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:00:55,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924997287] [2024-11-28 04:00:55,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:00:55,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:00:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:00:55,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:00:55,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:00:55,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924997287] [2024-11-28 04:00:55,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924997287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:00:55,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:00:55,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:00:55,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879174270] [2024-11-28 04:00:55,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:00:55,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:00:55,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:00:55,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:00:55,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:00:55,477 INFO L87 Difference]: Start difference. First operand has 36 states, 34 states have (on average 1.588235294117647) internal successors, (54), 35 states have internal predecessors, (54), 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 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-28 04:00:55,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:00:55,631 INFO L93 Difference]: Finished difference Result 84 states and 134 transitions. [2024-11-28 04:00:55,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:00:55,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2024-11-28 04:00:55,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:00:55,645 INFO L225 Difference]: With dead ends: 84 [2024-11-28 04:00:55,648 INFO L226 Difference]: Without dead ends: 48 [2024-11-28 04:00:55,651 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 [2024-11-28 04:00:55,654 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 8 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:00:55,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:00:55,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-28 04:00:55,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2024-11-28 04:00:55,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 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) [2024-11-28 04:00:55,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2024-11-28 04:00:55,690 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2024-11-28 04:00:55,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:00:55,691 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2024-11-28 04:00:55,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-28 04:00:55,692 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2024-11-28 04:00:55,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 04:00:55,692 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:00:55,693 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] [2024-11-28 04:00:55,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:00:55,693 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:00:55,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:00:55,694 INFO L85 PathProgramCache]: Analyzing trace with hash 287392889, now seen corresponding path program 1 times [2024-11-28 04:00:55,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:00:55,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126735552] [2024-11-28 04:00:55,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:00:55,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:00:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:00:55,975 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:00:55,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:00:55,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126735552] [2024-11-28 04:00:55,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126735552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:00:55,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744394820] [2024-11-28 04:00:55,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:00:55,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:00:55,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:00:55,981 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:00:55,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:00:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:00:56,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:00:56,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:00:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:00:56,179 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:00:56,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:00:56,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744394820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:00:56,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:00:56,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 04:00:56,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343073854] [2024-11-28 04:00:56,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:00:56,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:00:56,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:00:56,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:00:56,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:00:56,229 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2024-11-28 04:00:56,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:00:56,496 INFO L93 Difference]: Finished difference Result 123 states and 162 transitions. [2024-11-28 04:00:56,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:00:56,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 38 [2024-11-28 04:00:56,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:00:56,497 INFO L225 Difference]: With dead ends: 123 [2024-11-28 04:00:56,497 INFO L226 Difference]: Without dead ends: 88 [2024-11-28 04:00:56,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:00:56,499 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 58 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:00:56,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 40 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:00:56,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-28 04:00:56,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-28 04:00:56,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.103448275862069) internal successors, (96), 87 states have internal predecessors, (96), 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) [2024-11-28 04:00:56,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2024-11-28 04:00:56,510 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 38 [2024-11-28 04:00:56,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:00:56,511 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2024-11-28 04:00:56,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2024-11-28 04:00:56,511 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2024-11-28 04:00:56,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 04:00:56,515 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:00:56,515 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:00:56,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:00:56,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:00:56,722 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:00:56,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:00:56,724 INFO L85 PathProgramCache]: Analyzing trace with hash -303157287, now seen corresponding path program 2 times [2024-11-28 04:00:56,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:00:56,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003439297] [2024-11-28 04:00:56,725 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:00:56,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:00:56,882 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:00:56,886 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:00:57,277 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-28 04:00:57,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:00:57,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003439297] [2024-11-28 04:00:57,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003439297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:00:57,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358793409] [2024-11-28 04:00:57,278 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:00:57,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:00:57,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:00:57,280 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:00:57,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:00:57,443 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:00:57,443 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:00:57,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:00:57,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:00:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-28 04:00:57,491 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:00:57,602 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-28 04:00:57,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358793409] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:00:57,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:00:57,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-28 04:00:57,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004333084] [2024-11-28 04:00:57,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:00:57,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:00:57,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:00:57,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:00:57,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:00:57,608 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 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) [2024-11-28 04:00:58,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:00:58,196 INFO L93 Difference]: Finished difference Result 261 states and 324 transitions. [2024-11-28 04:00:58,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:00:58,197 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 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 86 [2024-11-28 04:00:58,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:00:58,199 INFO L225 Difference]: With dead ends: 261 [2024-11-28 04:00:58,199 INFO L226 Difference]: Without dead ends: 184 [2024-11-28 04:00:58,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:00:58,205 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 184 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:00:58,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 40 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:00:58,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-28 04:00:58,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-11-28 04:00:58,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.0491803278688525) internal successors, (192), 183 states have internal predecessors, (192), 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) [2024-11-28 04:00:58,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 192 transitions. [2024-11-28 04:00:58,240 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 192 transitions. Word has length 86 [2024-11-28 04:00:58,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:00:58,241 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 192 transitions. [2024-11-28 04:00:58,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 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) [2024-11-28 04:00:58,241 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 192 transitions. [2024-11-28 04:00:58,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-28 04:00:58,250 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:00:58,250 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:00:58,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:00:58,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:00:58,455 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:00:58,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:00:58,456 INFO L85 PathProgramCache]: Analyzing trace with hash -658504039, now seen corresponding path program 3 times [2024-11-28 04:00:58,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:00:58,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202727641] [2024-11-28 04:00:58,456 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:00:58,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:00:58,798 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 04:00:58,799 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:00:59,618 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2024-11-28 04:00:59,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:00:59,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202727641] [2024-11-28 04:00:59,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202727641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:00:59,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696559332] [2024-11-28 04:00:59,621 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:00:59,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:00:59,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:00:59,624 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:00:59,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:01:34,497 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 04:01:34,497 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:01:34,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:01:34,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:34,654 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 19 proven. 100 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2024-11-28 04:01:34,654 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:01:34,974 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2024-11-28 04:01:34,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696559332] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:01:34,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:01:34,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 26 [2024-11-28 04:01:34,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625550800] [2024-11-28 04:01:34,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:01:34,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 04:01:34,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:34,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 04:01:34,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:01:34,978 INFO L87 Difference]: Start difference. First operand 184 states and 192 transitions. Second operand has 26 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 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) [2024-11-28 04:01:35,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:35,981 INFO L93 Difference]: Finished difference Result 537 states and 648 transitions. [2024-11-28 04:01:35,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 04:01:35,982 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 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 182 [2024-11-28 04:01:35,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:35,984 INFO L225 Difference]: With dead ends: 537 [2024-11-28 04:01:35,985 INFO L226 Difference]: Without dead ends: 376 [2024-11-28 04:01:35,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:01:35,987 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 369 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:35,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 48 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:01:35,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-11-28 04:01:36,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2024-11-28 04:01:36,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.024) internal successors, (384), 375 states have internal predecessors, (384), 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) [2024-11-28 04:01:36,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 384 transitions. [2024-11-28 04:01:36,025 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 384 transitions. Word has length 182 [2024-11-28 04:01:36,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:36,025 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 384 transitions. [2024-11-28 04:01:36,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 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) [2024-11-28 04:01:36,026 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 384 transitions. [2024-11-28 04:01:36,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-11-28 04:01:36,034 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:36,034 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:36,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:01:36,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:36,235 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:01:36,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:36,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1438403559, now seen corresponding path program 4 times [2024-11-28 04:01:36,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:36,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556007414] [2024-11-28 04:01:36,236 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:01:36,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:36,428 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:01:36,428 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:01:38,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3872 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3388 trivial. 0 not checked. [2024-11-28 04:01:38,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:38,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556007414] [2024-11-28 04:01:38,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556007414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:38,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296096705] [2024-11-28 04:01:38,430 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:01:38,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:38,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:38,433 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:38,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:01:38,857 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:01:38,857 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:01:38,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 04:01:38,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:39,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3872 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3388 trivial. 0 not checked. [2024-11-28 04:01:39,019 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:01:40,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3872 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3388 trivial. 0 not checked. [2024-11-28 04:01:40,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296096705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:01:40,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:01:40,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-28 04:01:40,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273217159] [2024-11-28 04:01:40,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:01:40,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-28 04:01:40,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:40,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-28 04:01:40,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 04:01:40,066 INFO L87 Difference]: Start difference. First operand 376 states and 384 transitions. Second operand has 49 states, 49 states have (on average 2.63265306122449) internal successors, (129), 49 states have internal predecessors, (129), 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) [2024-11-28 04:01:42,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:42,624 INFO L93 Difference]: Finished difference Result 1089 states and 1296 transitions. [2024-11-28 04:01:42,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 04:01:42,626 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.63265306122449) internal successors, (129), 49 states have internal predecessors, (129), 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 374 [2024-11-28 04:01:42,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:42,632 INFO L225 Difference]: With dead ends: 1089 [2024-11-28 04:01:42,632 INFO L226 Difference]: Without dead ends: 760 [2024-11-28 04:01:42,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 724 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 04:01:42,635 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 961 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 1136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1136 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:42,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 72 Invalid, 1928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1136 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 04:01:42,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2024-11-28 04:01:42,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2024-11-28 04:01:42,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 759 states have (on average 1.0118577075098814) internal successors, (768), 759 states have internal predecessors, (768), 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) [2024-11-28 04:01:42,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 768 transitions. [2024-11-28 04:01:42,698 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 768 transitions. Word has length 374 [2024-11-28 04:01:42,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:42,699 INFO L471 AbstractCegarLoop]: Abstraction has 760 states and 768 transitions. [2024-11-28 04:01:42,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.63265306122449) internal successors, (129), 49 states have internal predecessors, (129), 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) [2024-11-28 04:01:42,699 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 768 transitions. [2024-11-28 04:01:42,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2024-11-28 04:01:42,724 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:42,725 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:42,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:01:42,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:42,929 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:01:42,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:42,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1422593817, now seen corresponding path program 5 times [2024-11-28 04:01:42,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:42,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596281675] [2024-11-28 04:01:42,930 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:01:42,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:46,426 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-28 04:01:46,426 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:01:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 16928 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 14812 trivial. 0 not checked. [2024-11-28 04:01:52,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:52,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596281675] [2024-11-28 04:01:52,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596281675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:52,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671171771] [2024-11-28 04:01:52,746 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:01:52,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:52,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:52,749 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:52,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72da9afe-f634-443b-ad4b-c6d2d15a4eab/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process