./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-31.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-31.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya --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 8f77797d2552fe3475312723420efd01b161fc47e64b81a5b4169e51f838e014 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:48:58,547 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:48:58,615 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:48:58,621 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:48:58,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:48:58,645 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:48:58,646 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:48:58,646 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:48:58,647 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:48:58,647 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:48:58,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:48:58,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:48:58,649 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:48:58,650 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:48:58,650 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:48:58,651 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:48:58,651 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:48:58,652 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:48:58,652 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:48:58,653 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:48:58,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:48:58,654 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:48:58,655 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:48:58,655 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:48:58,656 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:48:58,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:48:58,656 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:48:58,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:48:58,657 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:48:58,658 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:48:58,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:48:58,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:48:58,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:48:58,659 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:48:58,669 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:48:58,669 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:48:58,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:48:58,670 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:48:58,670 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:48:58,670 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:48:58,671 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:48:58,671 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:48:58,671 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f77797d2552fe3475312723420efd01b161fc47e64b81a5b4169e51f838e014 [2023-11-29 02:48:58,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:48:58,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:48:58,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:48:58,928 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:48:58,928 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:48:58,930 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-31.i [2023-11-29 02:49:01,642 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:49:01,855 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:49:01,855 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-31.i [2023-11-29 02:49:01,864 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya/data/d6e8a441a/f8371d211f5c4d29890d4c896866eb6e/FLAGd9965434e [2023-11-29 02:49:01,876 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya/data/d6e8a441a/f8371d211f5c4d29890d4c896866eb6e [2023-11-29 02:49:01,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:49:01,880 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:49:01,881 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:49:01,881 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:49:01,885 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:49:01,885 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:49:01" (1/1) ... [2023-11-29 02:49:01,886 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@278b6b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:01, skipping insertion in model container [2023-11-29 02:49:01,886 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:49:01" (1/1) ... [2023-11-29 02:49:01,929 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:49:02,040 WARN L240 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_97db56dc-f44e-4add-9699-72091d59f08f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-31.i[919,932] [2023-11-29 02:49:02,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:49:02,125 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:49:02,137 WARN L240 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_97db56dc-f44e-4add-9699-72091d59f08f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-31.i[919,932] [2023-11-29 02:49:02,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:49:02,198 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:49:02,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:02 WrapperNode [2023-11-29 02:49:02,199 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:49:02,200 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:49:02,200 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:49:02,200 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:49:02,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:02" (1/1) ... [2023-11-29 02:49:02,223 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:02" (1/1) ... [2023-11-29 02:49:02,267 INFO L138 Inliner]: procedures = 26, calls = 67, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 289 [2023-11-29 02:49:02,268 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:49:02,268 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:49:02,268 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:49:02,269 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:49:02,281 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:02" (1/1) ... [2023-11-29 02:49:02,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:02" (1/1) ... [2023-11-29 02:49:02,286 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:02" (1/1) ... [2023-11-29 02:49:02,310 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]. [2023-11-29 02:49:02,310 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:02" (1/1) ... [2023-11-29 02:49:02,310 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:02" (1/1) ... [2023-11-29 02:49:02,325 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:02" (1/1) ... [2023-11-29 02:49:02,330 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:02" (1/1) ... [2023-11-29 02:49:02,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:02" (1/1) ... [2023-11-29 02:49:02,338 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:02" (1/1) ... [2023-11-29 02:49:02,347 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:49:02,348 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:49:02,349 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:49:02,349 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:49:02,350 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:02" (1/1) ... [2023-11-29 02:49:02,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:49:02,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:49:02,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:49:02,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:49:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:49:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 02:49:02,436 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 02:49:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:49:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:49:02,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:49:02,551 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:49:02,553 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:49:02,964 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:49:03,001 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:49:03,002 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:49:03,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:49:03 BoogieIcfgContainer [2023-11-29 02:49:03,002 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:49:03,005 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:49:03,006 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:49:03,009 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:49:03,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:49:01" (1/3) ... [2023-11-29 02:49:03,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e11325c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:49:03, skipping insertion in model container [2023-11-29 02:49:03,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:02" (2/3) ... [2023-11-29 02:49:03,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e11325c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:49:03, skipping insertion in model container [2023-11-29 02:49:03,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:49:03" (3/3) ... [2023-11-29 02:49:03,012 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-31.i [2023-11-29 02:49:03,032 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:49:03,032 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:49:03,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:49:03,089 INFO L357 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, mHoare=true, 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;@1c53808f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:49:03,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:49:03,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 66 states have internal predecessors, (92), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:49:03,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-11-29 02:49:03,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:49:03,113 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:49:03,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:49:03,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:49:03,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1394329824, now seen corresponding path program 1 times [2023-11-29 02:49:03,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:49:03,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961741136] [2023-11-29 02:49:03,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:49:03,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:49:03,362 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:49:03,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162259725] [2023-11-29 02:49:03,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:49:03,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:49:03,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:49:03,372 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:49:03,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:49:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:49:03,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 02:49:03,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:49:04,488 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 1985 proven. 33 refuted. 0 times theorem prover too weak. 3706 trivial. 0 not checked. [2023-11-29 02:49:04,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:49:05,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 126 proven. 33 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2023-11-29 02:49:05,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:49:05,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961741136] [2023-11-29 02:49:05,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:49:05,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162259725] [2023-11-29 02:49:05,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162259725] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:49:05,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:49:05,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-11-29 02:49:05,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424566563] [2023-11-29 02:49:05,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:49:05,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:49:05,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:49:05,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:49:05,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:49:05,254 INFO L87 Difference]: Start difference. First operand has 122 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 66 states have internal predecessors, (92), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 12 states have internal predecessors, (98), 4 states have call successors, (108), 3 states have call predecessors, (108), 5 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) [2023-11-29 02:49:06,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:49:06,496 INFO L93 Difference]: Finished difference Result 437 states and 867 transitions. [2023-11-29 02:49:06,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 02:49:06,499 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 12 states have internal predecessors, (98), 4 states have call successors, (108), 3 states have call predecessors, (108), 5 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) Word has length 319 [2023-11-29 02:49:06,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:49:06,515 INFO L225 Difference]: With dead ends: 437 [2023-11-29 02:49:06,515 INFO L226 Difference]: Without dead ends: 316 [2023-11-29 02:49:06,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:49:06,525 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 248 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:49:06,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 629 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 02:49:06,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-29 02:49:06,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 241. [2023-11-29 02:49:06,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 129 states have (on average 1.3410852713178294) internal successors, (173), 129 states have internal predecessors, (173), 108 states have call successors, (108), 3 states have call predecessors, (108), 3 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2023-11-29 02:49:06,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 389 transitions. [2023-11-29 02:49:06,638 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 389 transitions. Word has length 319 [2023-11-29 02:49:06,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:49:06,640 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 389 transitions. [2023-11-29 02:49:06,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 12 states have internal predecessors, (98), 4 states have call successors, (108), 3 states have call predecessors, (108), 5 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) [2023-11-29 02:49:06,641 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 389 transitions. [2023-11-29 02:49:06,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-11-29 02:49:06,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:49:06,650 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:49:06,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:49:06,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 02:49:06,853 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:49:06,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:49:06,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1879569118, now seen corresponding path program 1 times [2023-11-29 02:49:06,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:49:06,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940644113] [2023-11-29 02:49:06,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:49:06,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:49:06,924 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:49:06,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496314508] [2023-11-29 02:49:06,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:49:06,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:49:06,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:49:06,926 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:49:06,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97db56dc-f44e-4add-9699-72091d59f08f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:49:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:49:07,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-29 02:49:07,178 INFO L285 TraceCheckSpWp]: Computing forward predicates...