./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-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_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/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_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-31.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/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_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/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 d39179efc28fccc153e100042d7b324f767a1fca5c4b8e10ed55a1e034da2fb7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:02:51,300 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:02:51,362 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:02:51,367 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:02:51,368 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:02:51,392 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:02:51,393 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:02:51,394 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:02:51,394 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:02:51,395 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:02:51,396 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:02:51,396 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:02:51,397 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:02:51,397 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:02:51,398 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:02:51,398 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:02:51,399 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:02:51,399 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:02:51,400 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:02:51,400 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:02:51,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:02:51,403 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:02:51,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:02:51,404 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:02:51,404 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:02:51,405 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:02:51,405 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:02:51,406 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:02:51,406 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:02:51,406 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:02:51,407 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:02:51,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:02:51,407 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:02:51,408 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:02:51,408 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:02:51,408 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:02:51,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:02:51,408 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:02:51,408 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:02:51,409 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:02:51,409 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:02:51,409 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:02:51,409 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_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d39179efc28fccc153e100042d7b324f767a1fca5c4b8e10ed55a1e034da2fb7 [2023-11-29 03:02:51,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:02:51,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:02:51,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:02:51,673 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:02:51,674 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:02:51,675 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-31.i [2023-11-29 03:02:54,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:02:54,653 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:02:54,653 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-31.i [2023-11-29 03:02:54,664 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/data/5b6adca57/62c4eb0511724f70beba8d3453ed9c08/FLAG39a56c7cb [2023-11-29 03:02:54,679 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/data/5b6adca57/62c4eb0511724f70beba8d3453ed9c08 [2023-11-29 03:02:54,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:02:54,683 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:02:54,684 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:02:54,684 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:02:54,688 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:02:54,689 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:02:54" (1/1) ... [2023-11-29 03:02:54,690 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e5a78fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:02:54, skipping insertion in model container [2023-11-29 03:02:54,690 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:02:54" (1/1) ... [2023-11-29 03:02:54,727 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:02:54,849 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_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-31.i[919,932] [2023-11-29 03:02:54,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:02:54,945 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:02:54,955 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_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-31.i[919,932] [2023-11-29 03:02:54,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:02:55,013 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:02:55,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:02:55 WrapperNode [2023-11-29 03:02:55,014 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:02:55,015 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:02:55,015 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:02:55,015 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:02:55,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:02:55" (1/1) ... [2023-11-29 03:02:55,034 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:02:55" (1/1) ... [2023-11-29 03:02:55,075 INFO L138 Inliner]: procedures = 26, calls = 67, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 289 [2023-11-29 03:02:55,075 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:02:55,076 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:02:55,077 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:02:55,077 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:02:55,087 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:02:55" (1/1) ... [2023-11-29 03:02:55,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:02:55" (1/1) ... [2023-11-29 03:02:55,092 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:02:55" (1/1) ... [2023-11-29 03:02:55,117 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 03:02:55,117 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:02:55" (1/1) ... [2023-11-29 03:02:55,117 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:02:55" (1/1) ... [2023-11-29 03:02:55,134 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:02:55" (1/1) ... [2023-11-29 03:02:55,139 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:02:55" (1/1) ... [2023-11-29 03:02:55,142 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:02:55" (1/1) ... [2023-11-29 03:02:55,146 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:02:55" (1/1) ... [2023-11-29 03:02:55,152 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:02:55,153 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:02:55,153 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:02:55,153 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:02:55,154 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:02:55" (1/1) ... [2023-11-29 03:02:55,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:02:55,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:02:55,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:02:55,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:02:55,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:02:55,216 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 03:02:55,216 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 03:02:55,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:02:55,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:02:55,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:02:55,315 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:02:55,317 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:02:55,744 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:02:55,784 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:02:55,784 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 03:02:55,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:02:55 BoogieIcfgContainer [2023-11-29 03:02:55,785 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:02:55,788 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:02:55,788 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:02:55,790 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:02:55,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:02:54" (1/3) ... [2023-11-29 03:02:55,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab05b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:02:55, skipping insertion in model container [2023-11-29 03:02:55,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:02:55" (2/3) ... [2023-11-29 03:02:55,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab05b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:02:55, skipping insertion in model container [2023-11-29 03:02:55,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:02:55" (3/3) ... [2023-11-29 03:02:55,793 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-cn_file-31.i [2023-11-29 03:02:55,808 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:02:55,808 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:02:55,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:02:55,858 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;@4b53a166, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:02:55,858 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:02:55,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 66 states have (on average 1.4090909090909092) internal successors, (93), 67 states have internal predecessors, (93), 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 03:02:55,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-11-29 03:02:55,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:02:55,886 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, 1] [2023-11-29 03:02:55,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:02:55,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:02:55,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1269355693, now seen corresponding path program 1 times [2023-11-29 03:02:55,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:02:55,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898921996] [2023-11-29 03:02:55,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:02:55,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:02:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:02:56,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:02:56,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898921996] [2023-11-29 03:02:56,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 03:02:56,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656293160] [2023-11-29 03:02:56,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:02:56,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:02:56,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:02:56,163 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:02:56,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:02:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:02:56,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 03:02:56,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:02:56,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 5618 trivial. 0 not checked. [2023-11-29 03:02:56,468 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:02:56,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656293160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:02:56,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:02:56,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:02:56,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685757864] [2023-11-29 03:02:56,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:02:56,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:02:56,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:02:56,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:02:56,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:02:56,507 INFO L87 Difference]: Start difference. First operand has 123 states, 66 states have (on average 1.4090909090909092) internal successors, (93), 67 states have internal predecessors, (93), 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 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 2 states have call successors, (54) [2023-11-29 03:02:56,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:02:56,569 INFO L93 Difference]: Finished difference Result 243 states and 454 transitions. [2023-11-29 03:02:56,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:02:56,572 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 2 states have call successors, (54) Word has length 320 [2023-11-29 03:02:56,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:02:56,582 INFO L225 Difference]: With dead ends: 243 [2023-11-29 03:02:56,582 INFO L226 Difference]: Without dead ends: 121 [2023-11-29 03:02:56,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:02:56,591 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:02:56,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:02:56,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-29 03:02:56,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-11-29 03:02:56,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 65 states have (on average 1.353846153846154) internal successors, (88), 65 states have internal predecessors, (88), 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 03:02:56,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 196 transitions. [2023-11-29 03:02:56,654 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 196 transitions. Word has length 320 [2023-11-29 03:02:56,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:02:56,655 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 196 transitions. [2023-11-29 03:02:56,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 2 states have call successors, (54) [2023-11-29 03:02:56,655 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 196 transitions. [2023-11-29 03:02:56,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-11-29 03:02:56,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:02:56,664 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, 1] [2023-11-29 03:02:56,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:02:56,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 03:02:56,868 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:02:56,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:02:56,869 INFO L85 PathProgramCache]: Analyzing trace with hash 179971753, now seen corresponding path program 1 times [2023-11-29 03:02:56,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:02:56,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205697098] [2023-11-29 03:02:56,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:02:56,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:02:56,958 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:02:56,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872460294] [2023-11-29 03:02:56,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:02:56,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:02:56,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:02:56,960 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:02:56,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:02:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:02:57,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:02:57,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:02:57,258 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2023-11-29 03:02:57,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:02:57,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:02:57,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205697098] [2023-11-29 03:02:57,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:02:57,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872460294] [2023-11-29 03:02:57,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872460294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:02:57,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:02:57,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:02:57,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908605709] [2023-11-29 03:02:57,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:02:57,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:02:57,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:02:57,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:02:57,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:02:57,263 INFO L87 Difference]: Start difference. First operand 121 states and 196 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2023-11-29 03:02:57,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:02:57,346 INFO L93 Difference]: Finished difference Result 360 states and 584 transitions. [2023-11-29 03:02:57,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:02:57,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 320 [2023-11-29 03:02:57,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:02:57,354 INFO L225 Difference]: With dead ends: 360 [2023-11-29 03:02:57,354 INFO L226 Difference]: Without dead ends: 240 [2023-11-29 03:02:57,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:02:57,357 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 186 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:02:57,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 557 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:02:57,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-11-29 03:02:57,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 125. [2023-11-29 03:02:57,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 69 states have internal predecessors, (93), 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 03:02:57,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 201 transitions. [2023-11-29 03:02:57,391 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 201 transitions. Word has length 320 [2023-11-29 03:02:57,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:02:57,394 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 201 transitions. [2023-11-29 03:02:57,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2023-11-29 03:02:57,394 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 201 transitions. [2023-11-29 03:02:57,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-11-29 03:02:57,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:02:57,398 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, 1] [2023-11-29 03:02:57,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:02:57,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 03:02:57,599 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:02:57,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:02:57,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1954979115, now seen corresponding path program 1 times [2023-11-29 03:02:57,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:02:57,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724287623] [2023-11-29 03:02:57,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:02:57,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:02:57,665 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:02:57,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761701804] [2023-11-29 03:02:57,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:02:57,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:02:57,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:02:57,667 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:02:57,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:02:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:02:57,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:02:57,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:02:58,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2023-11-29 03:02:58,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:02:58,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:02:58,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724287623] [2023-11-29 03:02:58,363 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:02:58,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761701804] [2023-11-29 03:02:58,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761701804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:02:58,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:02:58,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:02:58,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052451391] [2023-11-29 03:02:58,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:02:58,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:02:58,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:02:58,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:02:58,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:02:58,366 INFO L87 Difference]: Start difference. First operand 125 states and 201 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2023-11-29 03:02:58,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:02:58,600 INFO L93 Difference]: Finished difference Result 374 states and 603 transitions. [2023-11-29 03:02:58,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:02:58,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 320 [2023-11-29 03:02:58,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:02:58,605 INFO L225 Difference]: With dead ends: 374 [2023-11-29 03:02:58,606 INFO L226 Difference]: Without dead ends: 250 [2023-11-29 03:02:58,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:02:58,608 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 48 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:02:58,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 458 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:02:58,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-11-29 03:02:58,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 247. [2023-11-29 03:02:58,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 136 states have (on average 1.3455882352941178) internal successors, (183), 136 states have internal predecessors, (183), 108 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2023-11-29 03:02:58,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 399 transitions. [2023-11-29 03:02:58,658 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 399 transitions. Word has length 320 [2023-11-29 03:02:58,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:02:58,659 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 399 transitions. [2023-11-29 03:02:58,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2023-11-29 03:02:58,660 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 399 transitions. [2023-11-29 03:02:58,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-11-29 03:02:58,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:02:58,662 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, 1] [2023-11-29 03:02:58,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:02:58,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:02:58,863 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:02:58,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:02:58,864 INFO L85 PathProgramCache]: Analyzing trace with hash 943861865, now seen corresponding path program 1 times [2023-11-29 03:02:58,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:02:58,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792393015] [2023-11-29 03:02:58,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:02:58,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:02:58,918 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:02:58,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084546886] [2023-11-29 03:02:58,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:02:58,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:02:58,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:02:58,920 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:02:58,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a889d1-6fd4-4f6d-84d9-33be1744a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:02:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:02:59,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 03:02:59,164 INFO L285 TraceCheckSpWp]: Computing forward predicates...