./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-45.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_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/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_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-45.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/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_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/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 b05815fd5cec927760044a6cdc6a3ae40876f51be4ef175e85dd936d2cf2ad8e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:13:25,108 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:13:25,173 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:13:25,178 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:13:25,179 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:13:25,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:13:25,204 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:13:25,205 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:13:25,205 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:13:25,206 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:13:25,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:13:25,207 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:13:25,208 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:13:25,208 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:13:25,209 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:13:25,209 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:13:25,210 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:13:25,210 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:13:25,211 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:13:25,211 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:13:25,212 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:13:25,212 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:13:25,213 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:13:25,213 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:13:25,214 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:13:25,214 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:13:25,214 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:13:25,215 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:13:25,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:13:25,216 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:13:25,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:13:25,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:13:25,217 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:13:25,217 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:13:25,218 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:13:25,218 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:13:25,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:13:25,218 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:13:25,218 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:13:25,219 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:13:25,219 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:13:25,219 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:13:25,219 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_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b05815fd5cec927760044a6cdc6a3ae40876f51be4ef175e85dd936d2cf2ad8e [2023-11-29 05:13:25,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:13:25,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:13:25,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:13:25,463 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:13:25,464 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:13:25,465 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-45.i [2023-11-29 05:13:28,223 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:13:28,440 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:13:28,440 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-45.i [2023-11-29 05:13:28,453 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/data/1b899fb8f/b5035bf780ec423da9624df8c2dd432c/FLAG490d1e9ee [2023-11-29 05:13:28,466 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/data/1b899fb8f/b5035bf780ec423da9624df8c2dd432c [2023-11-29 05:13:28,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:13:28,470 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:13:28,471 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:13:28,471 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:13:28,475 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:13:28,476 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:13:28" (1/1) ... [2023-11-29 05:13:28,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12c76110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:28, skipping insertion in model container [2023-11-29 05:13:28,477 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:13:28" (1/1) ... [2023-11-29 05:13:28,522 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:13:28,640 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_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-45.i[916,929] [2023-11-29 05:13:28,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:13:28,785 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:13:28,796 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_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-45.i[916,929] [2023-11-29 05:13:28,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:13:28,883 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:13:28,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:28 WrapperNode [2023-11-29 05:13:28,884 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:13:28,885 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:13:28,885 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:13:28,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:13:28,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:28" (1/1) ... [2023-11-29 05:13:28,906 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:28" (1/1) ... [2023-11-29 05:13:28,951 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 443 [2023-11-29 05:13:28,951 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:13:28,952 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:13:28,952 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:13:28,952 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:13:28,962 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:28" (1/1) ... [2023-11-29 05:13:28,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:28" (1/1) ... [2023-11-29 05:13:28,969 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:28" (1/1) ... [2023-11-29 05:13:29,017 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 05:13:29,018 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:28" (1/1) ... [2023-11-29 05:13:29,018 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:28" (1/1) ... [2023-11-29 05:13:29,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:28" (1/1) ... [2023-11-29 05:13:29,042 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:28" (1/1) ... [2023-11-29 05:13:29,050 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:28" (1/1) ... [2023-11-29 05:13:29,054 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:28" (1/1) ... [2023-11-29 05:13:29,066 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:13:29,067 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:13:29,067 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:13:29,068 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:13:29,068 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:28" (1/1) ... [2023-11-29 05:13:29,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:13:29,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:13:29,091 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:13:29,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:13:29,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:13:29,126 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 05:13:29,126 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 05:13:29,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:13:29,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:13:29,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:13:29,236 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:13:29,238 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:13:29,869 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:13:29,930 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:13:29,930 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 05:13:29,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:13:29 BoogieIcfgContainer [2023-11-29 05:13:29,931 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:13:29,933 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:13:29,933 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:13:29,936 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:13:29,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:13:28" (1/3) ... [2023-11-29 05:13:29,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e75bb05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:13:29, skipping insertion in model container [2023-11-29 05:13:29,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:28" (2/3) ... [2023-11-29 05:13:29,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e75bb05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:13:29, skipping insertion in model container [2023-11-29 05:13:29,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:13:29" (3/3) ... [2023-11-29 05:13:29,939 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-45.i [2023-11-29 05:13:29,956 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:13:29,956 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:13:30,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:13:30,009 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;@404cc067, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:13:30,009 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:13:30,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 123 states have (on average 1.5772357723577235) internal successors, (194), 124 states have internal predecessors, (194), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 05:13:30,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-11-29 05:13:30,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:13:30,036 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:13:30,037 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:13:30,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:13:30,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1026560557, now seen corresponding path program 1 times [2023-11-29 05:13:30,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:13:30,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768177683] [2023-11-29 05:13:30,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:30,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:13:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:30,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:13:30,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768177683] [2023-11-29 05:13:30,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 05:13:30,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384475088] [2023-11-29 05:13:30,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:30,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:13:30,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:13:30,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:13:30,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:13:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:30,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 05:13:30,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:13:30,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2023-11-29 05:13:30,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:13:30,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384475088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:13:30,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:13:30,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:13:30,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159457431] [2023-11-29 05:13:30,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:13:30,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 05:13:30,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:13:30,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 05:13:30,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:13:30,671 INFO L87 Difference]: Start difference. First operand has 164 states, 123 states have (on average 1.5772357723577235) internal successors, (194), 124 states have internal predecessors, (194), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2023-11-29 05:13:30,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:13:30,728 INFO L93 Difference]: Finished difference Result 324 states and 574 transitions. [2023-11-29 05:13:30,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 05:13:30,731 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) Word has length 266 [2023-11-29 05:13:30,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:13:30,741 INFO L225 Difference]: With dead ends: 324 [2023-11-29 05:13:30,741 INFO L226 Difference]: Without dead ends: 161 [2023-11-29 05:13:30,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 265 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 05:13:30,750 INFO L413 NwaCegarLoop]: 259 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, 259 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 05:13:30,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 259 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:13:30,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-29 05:13:30,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-11-29 05:13:30,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 121 states have (on average 1.537190082644628) internal successors, (186), 121 states have internal predecessors, (186), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 05:13:30,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 262 transitions. [2023-11-29 05:13:30,815 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 262 transitions. Word has length 266 [2023-11-29 05:13:30,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:13:30,815 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 262 transitions. [2023-11-29 05:13:30,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2023-11-29 05:13:30,816 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 262 transitions. [2023-11-29 05:13:30,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-11-29 05:13:30,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:13:30,834 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:13:30,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:13:31,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:13:31,041 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:13:31,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:13:31,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1875332529, now seen corresponding path program 1 times [2023-11-29 05:13:31,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:13:31,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704552367] [2023-11-29 05:13:31,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:31,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:13:31,136 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:13:31,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981019938] [2023-11-29 05:13:31,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:31,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:13:31,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:13:31,139 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:13:31,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:13:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:31,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:13:31,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:13:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 05:13:31,507 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:13:31,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:13:31,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704552367] [2023-11-29 05:13:31,507 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:13:31,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981019938] [2023-11-29 05:13:31,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981019938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:13:31,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:13:31,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:13:31,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751971747] [2023-11-29 05:13:31,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:13:31,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:13:31,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:13:31,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:13:31,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:13:31,511 INFO L87 Difference]: Start difference. First operand 161 states and 262 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 05:13:31,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:13:31,617 INFO L93 Difference]: Finished difference Result 472 states and 767 transitions. [2023-11-29 05:13:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:13:31,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 266 [2023-11-29 05:13:31,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:13:31,624 INFO L225 Difference]: With dead ends: 472 [2023-11-29 05:13:31,624 INFO L226 Difference]: Without dead ends: 312 [2023-11-29 05:13:31,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 264 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 05:13:31,627 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 226 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:13:31,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 494 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:13:31,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-11-29 05:13:31,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 188. [2023-11-29 05:13:31,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 148 states have (on average 1.5675675675675675) internal successors, (232), 148 states have internal predecessors, (232), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 05:13:31,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 308 transitions. [2023-11-29 05:13:31,658 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 308 transitions. Word has length 266 [2023-11-29 05:13:31,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:13:31,660 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 308 transitions. [2023-11-29 05:13:31,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 05:13:31,661 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 308 transitions. [2023-11-29 05:13:31,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-11-29 05:13:31,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:13:31,666 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:13:31,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:13:31,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 05:13:31,869 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:13:31,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:13:31,869 INFO L85 PathProgramCache]: Analyzing trace with hash 697328631, now seen corresponding path program 1 times [2023-11-29 05:13:31,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:13:31,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996264295] [2023-11-29 05:13:31,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:31,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:13:31,930 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:13:31,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501299467] [2023-11-29 05:13:31,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:31,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:13:31,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:13:31,932 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:13:31,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:13:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:32,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:13:32,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:13:32,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 05:13:32,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:13:32,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:13:32,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996264295] [2023-11-29 05:13:32,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:13:32,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501299467] [2023-11-29 05:13:32,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501299467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:13:32,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:13:32,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:13:32,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714792692] [2023-11-29 05:13:32,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:13:32,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:13:32,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:13:32,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:13:32,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:13:32,242 INFO L87 Difference]: Start difference. First operand 188 states and 308 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 05:13:32,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:13:32,336 INFO L93 Difference]: Finished difference Result 543 states and 888 transitions. [2023-11-29 05:13:32,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:13:32,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 266 [2023-11-29 05:13:32,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:13:32,341 INFO L225 Difference]: With dead ends: 543 [2023-11-29 05:13:32,342 INFO L226 Difference]: Without dead ends: 356 [2023-11-29 05:13:32,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 264 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 05:13:32,344 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 215 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:13:32,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 532 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:13:32,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-11-29 05:13:32,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 256. [2023-11-29 05:13:32,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 216 states have (on average 1.5925925925925926) internal successors, (344), 216 states have internal predecessors, (344), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 05:13:32,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 420 transitions. [2023-11-29 05:13:32,370 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 420 transitions. Word has length 266 [2023-11-29 05:13:32,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:13:32,371 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 420 transitions. [2023-11-29 05:13:32,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 05:13:32,371 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 420 transitions. [2023-11-29 05:13:32,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-11-29 05:13:32,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:13:32,375 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:13:32,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 05:13:32,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 05:13:32,576 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:13:32,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:13:32,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1339830071, now seen corresponding path program 1 times [2023-11-29 05:13:32,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:13:32,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764873127] [2023-11-29 05:13:32,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:32,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:13:32,634 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:13:32,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1799052674] [2023-11-29 05:13:32,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:32,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:13:32,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:13:32,636 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:13:32,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:13:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:32,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 05:13:32,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:15:55,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 05:15:55,659 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:15:55,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:15:55,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764873127] [2023-11-29 05:15:55,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:15:55,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799052674] [2023-11-29 05:15:55,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799052674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:15:55,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:15:55,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:15:55,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072694627] [2023-11-29 05:15:55,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:15:55,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:15:55,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:15:55,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:15:55,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:15:55,663 INFO L87 Difference]: Start difference. First operand 256 states and 420 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 05:16:05,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:16:05,883 INFO L93 Difference]: Finished difference Result 1065 states and 1743 transitions. [2023-11-29 05:16:05,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:16:05,884 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 266 [2023-11-29 05:16:05,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:16:05,891 INFO L225 Difference]: With dead ends: 1065 [2023-11-29 05:16:05,891 INFO L226 Difference]: Without dead ends: 810 [2023-11-29 05:16:05,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:16:05,893 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 727 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:16:05,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1554 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-11-29 05:16:05,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2023-11-29 05:16:05,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 390. [2023-11-29 05:16:05,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 350 states have (on average 1.62) internal successors, (567), 350 states have internal predecessors, (567), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 05:16:05,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 643 transitions. [2023-11-29 05:16:05,920 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 643 transitions. Word has length 266 [2023-11-29 05:16:05,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:16:05,921 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 643 transitions. [2023-11-29 05:16:05,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 05:16:05,921 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 643 transitions. [2023-11-29 05:16:05,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-11-29 05:16:05,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:16:05,927 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:16:05,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:16:06,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:16:06,128 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:16:06,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:16:06,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1031909191, now seen corresponding path program 1 times [2023-11-29 05:16:06,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:16:06,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201069077] [2023-11-29 05:16:06,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:16:06,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:16:06,172 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:16:06,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1206209924] [2023-11-29 05:16:06,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:16:06,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:16:06,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:16:06,175 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:16:06,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:16:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:06,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 05:16:06,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:22:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 05:22:37,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:22:37,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:22:37,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201069077] [2023-11-29 05:22:37,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:22:37,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206209924] [2023-11-29 05:22:37,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206209924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:22:37,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:22:37,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:22:37,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960559777] [2023-11-29 05:22:37,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:22:37,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:22:37,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:22:37,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:22:37,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:22:37,556 INFO L87 Difference]: Start difference. First operand 390 states and 643 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 05:22:51,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:22:51,511 INFO L93 Difference]: Finished difference Result 1201 states and 1956 transitions. [2023-11-29 05:22:51,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:22:51,511 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 266 [2023-11-29 05:22:51,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:22:51,517 INFO L225 Difference]: With dead ends: 1201 [2023-11-29 05:22:51,517 INFO L226 Difference]: Without dead ends: 812 [2023-11-29 05:22:51,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:22:51,519 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 679 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:22:51,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 1773 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2023-11-29 05:22:51,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2023-11-29 05:22:51,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 390. [2023-11-29 05:22:51,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 350 states have (on average 1.62) internal successors, (567), 350 states have internal predecessors, (567), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 05:22:51,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 643 transitions. [2023-11-29 05:22:51,538 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 643 transitions. Word has length 266 [2023-11-29 05:22:51,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:22:51,539 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 643 transitions. [2023-11-29 05:22:51,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 05:22:51,539 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 643 transitions. [2023-11-29 05:22:51,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-11-29 05:22:51,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:22:51,543 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:22:51,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 05:22:51,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:22:51,744 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:22:51,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:51,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1026864523, now seen corresponding path program 1 times [2023-11-29 05:22:51,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:22:51,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176933056] [2023-11-29 05:22:51,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:51,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:22:51,783 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:22:51,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [290075445] [2023-11-29 05:22:51,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:51,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:22:51,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:22:51,785 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:22:51,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:22:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:51,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 05:22:51,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:25:13,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 05:25:13,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:25:13,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:25:13,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176933056] [2023-11-29 05:25:13,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:25:13,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290075445] [2023-11-29 05:25:13,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290075445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:25:13,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:25:13,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:25:13,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975997554] [2023-11-29 05:25:13,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:25:13,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:25:13,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:25:13,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:25:13,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:25:13,722 INFO L87 Difference]: Start difference. First operand 390 states and 643 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 05:25:25,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:25:25,647 INFO L93 Difference]: Finished difference Result 1249 states and 2044 transitions. [2023-11-29 05:25:25,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:25:25,648 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 266 [2023-11-29 05:25:25,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:25:25,653 INFO L225 Difference]: With dead ends: 1249 [2023-11-29 05:25:25,653 INFO L226 Difference]: Without dead ends: 860 [2023-11-29 05:25:25,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:25:25,655 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 681 mSDsluCounter, 1645 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 2028 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:25:25,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 2028 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2023-11-29 05:25:25,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2023-11-29 05:25:25,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 424. [2023-11-29 05:25:25,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 384 states have (on average 1.6197916666666667) internal successors, (622), 384 states have internal predecessors, (622), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 05:25:25,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 698 transitions. [2023-11-29 05:25:25,688 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 698 transitions. Word has length 266 [2023-11-29 05:25:25,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:25:25,689 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 698 transitions. [2023-11-29 05:25:25,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 05:25:25,689 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 698 transitions. [2023-11-29 05:25:25,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-11-29 05:25:25,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:25:25,692 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:25,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:25:25,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:25:25,893 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:25:25,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:25:25,893 INFO L85 PathProgramCache]: Analyzing trace with hash 896363511, now seen corresponding path program 1 times [2023-11-29 05:25:25,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:25:25,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039072983] [2023-11-29 05:25:25,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:25:25,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:25:25,930 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:25:25,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714623080] [2023-11-29 05:25:25,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:25:25,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:25:25,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:25:25,932 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:25:25,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9a9dd-b2d7-4b7f-873f-b4e1dea667d9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:25:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:25:26,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 05:25:26,135 INFO L285 TraceCheckSpWp]: Computing forward predicates...