./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-64.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/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_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/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_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/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 8899bf799d43c7a9612ed78053e9d7a70a7473f753f2bc6e8275a7a2395553fd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:15:36,429 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:15:36,491 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:15:36,495 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:15:36,496 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:15:36,518 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:15:36,518 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:15:36,519 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:15:36,520 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:15:36,520 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:15:36,521 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:15:36,521 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:15:36,522 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:15:36,522 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:15:36,523 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:15:36,523 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:15:36,524 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:15:36,524 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:15:36,525 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:15:36,525 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:15:36,526 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:15:36,526 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:15:36,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:15:36,527 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:15:36,528 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:15:36,528 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:15:36,528 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:15:36,529 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:15:36,529 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:15:36,530 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:15:36,530 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:15:36,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:15:36,531 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:15:36,532 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:15:36,532 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:15:36,532 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:15:36,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:15:36,533 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:15:36,533 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:15:36,533 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:15:36,533 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:15:36,534 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:15:36,534 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_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8899bf799d43c7a9612ed78053e9d7a70a7473f753f2bc6e8275a7a2395553fd [2023-11-29 03:15:36,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:15:36,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:15:36,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:15:36,789 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:15:36,790 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:15:36,791 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-64.i [2023-11-29 03:15:39,497 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:15:39,761 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:15:39,761 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-64.i [2023-11-29 03:15:39,773 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/data/8b637412e/205ad37464634f09a24d0e2b7165b973/FLAG115dfa3b4 [2023-11-29 03:15:39,787 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/data/8b637412e/205ad37464634f09a24d0e2b7165b973 [2023-11-29 03:15:39,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:15:39,790 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:15:39,791 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:15:39,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:15:39,795 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:15:39,796 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:15:39" (1/1) ... [2023-11-29 03:15:39,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425aa6cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:39, skipping insertion in model container [2023-11-29 03:15:39,797 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:15:39" (1/1) ... [2023-11-29 03:15:39,835 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:15:39,983 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_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-64.i[916,929] [2023-11-29 03:15:40,070 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:15:40,085 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:15:40,098 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_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-64.i[916,929] [2023-11-29 03:15:40,142 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:15:40,161 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:15:40,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:40 WrapperNode [2023-11-29 03:15:40,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:15:40,163 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:15:40,163 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:15:40,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:15:40,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:40" (1/1) ... [2023-11-29 03:15:40,185 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:40" (1/1) ... [2023-11-29 03:15:40,223 INFO L138 Inliner]: procedures = 26, calls = 86, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 416 [2023-11-29 03:15:40,223 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:15:40,224 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:15:40,224 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:15:40,224 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:15:40,236 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:40" (1/1) ... [2023-11-29 03:15:40,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:40" (1/1) ... [2023-11-29 03:15:40,241 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:40" (1/1) ... [2023-11-29 03:15:40,259 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 03:15:40,259 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:40" (1/1) ... [2023-11-29 03:15:40,260 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:40" (1/1) ... [2023-11-29 03:15:40,275 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:40" (1/1) ... [2023-11-29 03:15:40,280 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:40" (1/1) ... [2023-11-29 03:15:40,283 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:40" (1/1) ... [2023-11-29 03:15:40,286 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:40" (1/1) ... [2023-11-29 03:15:40,291 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:15:40,292 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:15:40,293 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:15:40,293 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:15:40,293 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:40" (1/1) ... [2023-11-29 03:15:40,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:15:40,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:40,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:15:40,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:15:40,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:15:40,365 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 03:15:40,365 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 03:15:40,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:15:40,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:15:40,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:15:40,465 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:15:40,467 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:15:40,928 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:15:41,005 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:15:41,005 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 03:15:41,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:15:41 BoogieIcfgContainer [2023-11-29 03:15:41,006 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:15:41,009 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:15:41,009 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:15:41,012 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:15:41,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:15:39" (1/3) ... [2023-11-29 03:15:41,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e943c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:15:41, skipping insertion in model container [2023-11-29 03:15:41,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:15:40" (2/3) ... [2023-11-29 03:15:41,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e943c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:15:41, skipping insertion in model container [2023-11-29 03:15:41,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:15:41" (3/3) ... [2023-11-29 03:15:41,015 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-64.i [2023-11-29 03:15:41,034 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:15:41,035 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:15:41,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:15:41,090 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;@2ba527cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:15:41,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:15:41,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 94 states have (on average 1.4680851063829787) internal successors, (138), 95 states have internal predecessors, (138), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 03:15:41,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2023-11-29 03:15:41,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:15:41,121 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:15:41,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:15:41,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:41,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1199169446, now seen corresponding path program 1 times [2023-11-29 03:15:41,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:41,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063225893] [2023-11-29 03:15:41,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:41,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:41,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:41,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063225893] [2023-11-29 03:15:41,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 03:15:41,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099008947] [2023-11-29 03:15:41,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:41,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:41,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:41,459 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:15:41,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:15:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:41,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 03:15:41,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:15:41,851 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 10368 trivial. 0 not checked. [2023-11-29 03:15:41,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:15:41,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099008947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:15:41,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:15:41,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:15:41,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914824263] [2023-11-29 03:15:41,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:15:41,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:15:41,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:41,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:15:41,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:15:41,890 INFO L87 Difference]: Start difference. First operand has 170 states, 94 states have (on average 1.4680851063829787) internal successors, (138), 95 states have internal predecessors, (138), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 2 states have call successors, (73) [2023-11-29 03:15:41,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:15:41,966 INFO L93 Difference]: Finished difference Result 337 states and 639 transitions. [2023-11-29 03:15:41,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:15:41,969 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 2 states have call successors, (73) Word has length 434 [2023-11-29 03:15:41,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:15:41,979 INFO L225 Difference]: With dead ends: 337 [2023-11-29 03:15:41,979 INFO L226 Difference]: Without dead ends: 168 [2023-11-29 03:15:41,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 433 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 03:15:41,989 INFO L413 NwaCegarLoop]: 276 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, 276 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 03:15:41,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 276 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:15:42,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-29 03:15:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2023-11-29 03:15:42,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 93 states have (on average 1.4301075268817205) internal successors, (133), 93 states have internal predecessors, (133), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 03:15:42,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 279 transitions. [2023-11-29 03:15:42,062 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 279 transitions. Word has length 434 [2023-11-29 03:15:42,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:15:42,063 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 279 transitions. [2023-11-29 03:15:42,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 2 states have call successors, (73) [2023-11-29 03:15:42,064 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 279 transitions. [2023-11-29 03:15:42,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2023-11-29 03:15:42,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:15:42,078 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:15:42,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 03:15:42,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 03:15:42,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:15:42,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:42,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1376228580, now seen corresponding path program 1 times [2023-11-29 03:15:42,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:42,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997405442] [2023-11-29 03:15:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:42,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:42,382 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:15:42,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410853889] [2023-11-29 03:15:42,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:42,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:42,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:42,385 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:15:42,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:15:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:42,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:15:42,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:15:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-11-29 03:15:47,965 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:15:47,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:47,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997405442] [2023-11-29 03:15:47,965 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:15:47,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410853889] [2023-11-29 03:15:47,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410853889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:15:47,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:15:47,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:15:47,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048115592] [2023-11-29 03:15:47,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:15:47,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:15:47,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:47,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:15:47,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:15:47,971 INFO L87 Difference]: Start difference. First operand 168 states and 279 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-11-29 03:15:48,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:15:48,522 INFO L93 Difference]: Finished difference Result 655 states and 1086 transitions. [2023-11-29 03:15:48,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:15:48,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 434 [2023-11-29 03:15:48,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:15:48,533 INFO L225 Difference]: With dead ends: 655 [2023-11-29 03:15:48,533 INFO L226 Difference]: Without dead ends: 488 [2023-11-29 03:15:48,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:15:48,536 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 532 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:15:48,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 2152 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:15:48,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-29 03:15:48,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 172. [2023-11-29 03:15:48,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 97 states have (on average 1.4329896907216495) internal successors, (139), 97 states have internal predecessors, (139), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 03:15:48,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 285 transitions. [2023-11-29 03:15:48,588 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 285 transitions. Word has length 434 [2023-11-29 03:15:48,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:15:48,592 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 285 transitions. [2023-11-29 03:15:48,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-11-29 03:15:48,592 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 285 transitions. [2023-11-29 03:15:48,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2023-11-29 03:15:48,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:15:48,597 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:15:48,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:15:48,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:48,798 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:15:48,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:48,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1143731354, now seen corresponding path program 1 times [2023-11-29 03:15:48,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:48,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020808595] [2023-11-29 03:15:48,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:48,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:48,864 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:15:48,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785912984] [2023-11-29 03:15:48,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:48,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:48,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:48,867 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:15:48,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:15:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:49,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:15:49,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:15:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-11-29 03:15:50,265 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:15:50,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:50,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020808595] [2023-11-29 03:15:50,266 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:15:50,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785912984] [2023-11-29 03:15:50,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785912984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:15:50,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:15:50,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:15:50,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818076838] [2023-11-29 03:15:50,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:15:50,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:15:50,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:50,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:15:50,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:15:50,269 INFO L87 Difference]: Start difference. First operand 172 states and 285 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-11-29 03:15:50,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:15:50,573 INFO L93 Difference]: Finished difference Result 513 states and 846 transitions. [2023-11-29 03:15:50,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:15:50,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 434 [2023-11-29 03:15:50,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:15:50,579 INFO L225 Difference]: With dead ends: 513 [2023-11-29 03:15:50,579 INFO L226 Difference]: Without dead ends: 342 [2023-11-29 03:15:50,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:15:50,582 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 283 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:15:50,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1450 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:15:50,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-11-29 03:15:50,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 172. [2023-11-29 03:15:50,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 97 states have (on average 1.4329896907216495) internal successors, (139), 97 states have internal predecessors, (139), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 03:15:50,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 285 transitions. [2023-11-29 03:15:50,613 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 285 transitions. Word has length 434 [2023-11-29 03:15:50,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:15:50,615 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 285 transitions. [2023-11-29 03:15:50,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-11-29 03:15:50,615 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 285 transitions. [2023-11-29 03:15:50,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2023-11-29 03:15:50,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:15:50,619 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:15:50,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:15:50,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:50,820 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:15:50,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:50,821 INFO L85 PathProgramCache]: Analyzing trace with hash 943904228, now seen corresponding path program 1 times [2023-11-29 03:15:50,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:50,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328766552] [2023-11-29 03:15:50,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:50,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:50,864 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:15:50,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1863069269] [2023-11-29 03:15:50,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:50,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:50,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:50,866 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:15:50,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:15:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:51,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:15:51,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:15:53,009 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-11-29 03:15:53,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:15:53,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:53,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328766552] [2023-11-29 03:15:53,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:15:53,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863069269] [2023-11-29 03:15:53,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863069269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:15:53,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:15:53,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:15:53,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649622334] [2023-11-29 03:15:53,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:15:53,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:15:53,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:53,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:15:53,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:15:53,012 INFO L87 Difference]: Start difference. First operand 172 states and 285 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-11-29 03:15:53,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:15:53,314 INFO L93 Difference]: Finished difference Result 659 states and 1091 transitions. [2023-11-29 03:15:53,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:15:53,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 434 [2023-11-29 03:15:53,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:15:53,320 INFO L225 Difference]: With dead ends: 659 [2023-11-29 03:15:53,320 INFO L226 Difference]: Without dead ends: 488 [2023-11-29 03:15:53,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:15:53,323 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 535 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:15:53,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 1412 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:15:53,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-29 03:15:53,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 172. [2023-11-29 03:15:53,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 97 states have (on average 1.4329896907216495) internal successors, (139), 97 states have internal predecessors, (139), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 03:15:53,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 285 transitions. [2023-11-29 03:15:53,358 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 285 transitions. Word has length 434 [2023-11-29 03:15:53,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:15:53,360 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 285 transitions. [2023-11-29 03:15:53,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-11-29 03:15:53,360 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 285 transitions. [2023-11-29 03:15:53,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2023-11-29 03:15:53,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:15:53,364 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:15:53,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:15:53,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:53,569 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:15:53,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:53,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1576055706, now seen corresponding path program 1 times [2023-11-29 03:15:53,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:53,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560946884] [2023-11-29 03:15:53,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:53,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:53,619 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:15:53,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182879739] [2023-11-29 03:15:53,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:53,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:53,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:53,621 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:15:53,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:15:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:53,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:15:53,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:15:54,925 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-11-29 03:15:54,925 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:15:54,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:54,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560946884] [2023-11-29 03:15:54,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:15:54,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182879739] [2023-11-29 03:15:54,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182879739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:15:54,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:15:54,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:15:54,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998173437] [2023-11-29 03:15:54,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:15:54,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:15:54,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:54,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:15:54,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:15:54,929 INFO L87 Difference]: Start difference. First operand 172 states and 285 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-11-29 03:15:55,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:15:55,200 INFO L93 Difference]: Finished difference Result 659 states and 1090 transitions. [2023-11-29 03:15:55,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:15:55,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 434 [2023-11-29 03:15:55,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:15:55,204 INFO L225 Difference]: With dead ends: 659 [2023-11-29 03:15:55,205 INFO L226 Difference]: Without dead ends: 488 [2023-11-29 03:15:55,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:15:55,206 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 526 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:15:55,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 1436 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:15:55,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-29 03:15:55,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 168. [2023-11-29 03:15:55,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 93 states have (on average 1.4193548387096775) internal successors, (132), 93 states have internal predecessors, (132), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 03:15:55,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 278 transitions. [2023-11-29 03:15:55,233 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 278 transitions. Word has length 434 [2023-11-29 03:15:55,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:15:55,234 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 278 transitions. [2023-11-29 03:15:55,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-11-29 03:15:55,235 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 278 transitions. [2023-11-29 03:15:55,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-11-29 03:15:55,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:15:55,238 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:15:55,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 03:15:55,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:55,441 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:15:55,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:55,442 INFO L85 PathProgramCache]: Analyzing trace with hash -721023415, now seen corresponding path program 1 times [2023-11-29 03:15:55,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:55,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252391364] [2023-11-29 03:15:55,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:55,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:55,487 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:15:55,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166112282] [2023-11-29 03:15:55,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:55,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:55,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:55,488 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:15:55,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:15:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:55,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:15:55,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:15:55,754 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-11-29 03:15:55,754 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:15:55,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:55,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252391364] [2023-11-29 03:15:55,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:15:55,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166112282] [2023-11-29 03:15:55,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166112282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:15:55,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:15:55,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:15:55,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656081649] [2023-11-29 03:15:55,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:15:55,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:15:55,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:55,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:15:55,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:15:55,758 INFO L87 Difference]: Start difference. First operand 168 states and 278 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-11-29 03:15:55,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:15:55,798 INFO L93 Difference]: Finished difference Result 463 states and 765 transitions. [2023-11-29 03:15:55,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:15:55,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 436 [2023-11-29 03:15:55,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:15:55,802 INFO L225 Difference]: With dead ends: 463 [2023-11-29 03:15:55,803 INFO L226 Difference]: Without dead ends: 296 [2023-11-29 03:15:55,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 434 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 03:15:55,804 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 212 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:15:55,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 682 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:15:55,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-11-29 03:15:55,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 293. [2023-11-29 03:15:55,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 159 states have (on average 1.4025157232704402) internal successors, (223), 160 states have internal predecessors, (223), 131 states have call successors, (131), 2 states have call predecessors, (131), 2 states have return successors, (131), 130 states have call predecessors, (131), 131 states have call successors, (131) [2023-11-29 03:15:55,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 485 transitions. [2023-11-29 03:15:55,838 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 485 transitions. Word has length 436 [2023-11-29 03:15:55,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:15:55,840 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 485 transitions. [2023-11-29 03:15:55,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-11-29 03:15:55,840 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 485 transitions. [2023-11-29 03:15:55,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2023-11-29 03:15:55,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:15:55,844 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:15:55,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 03:15:56,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 03:15:56,045 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:15:56,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:56,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1909268202, now seen corresponding path program 1 times [2023-11-29 03:15:56,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:56,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129599916] [2023-11-29 03:15:56,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:56,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:56,092 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:15:56,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2014936973] [2023-11-29 03:15:56,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:56,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:56,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:56,094 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:15:56,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88c0457f-88dd-4b3e-b5ad-fe0d737bb39e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:15:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:56,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 03:15:56,357 INFO L285 TraceCheckSpWp]: Computing forward predicates...