./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-34.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_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/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_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-34.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/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_c3fc869b-c562-450c-83e3-fcb66cda3268/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 68ec8a45185640c14efe48000e9f98891ce6fe2387f90662afdebba9912124a6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:19:41,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:19:41,812 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:19:41,816 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:19:41,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:19:41,840 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:19:41,841 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:19:41,841 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:19:41,842 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:19:41,842 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:19:41,843 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:19:41,843 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:19:41,844 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:19:41,845 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:19:41,845 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:19:41,846 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:19:41,846 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:19:41,847 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:19:41,847 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:19:41,848 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:19:41,848 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:19:41,849 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:19:41,850 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:19:41,850 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:19:41,850 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:19:41,851 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:19:41,851 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:19:41,852 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:19:41,852 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:19:41,853 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:19:41,853 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:19:41,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:19:41,854 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:19:41,854 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:19:41,854 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:19:41,854 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:19:41,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:19:41,855 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:19:41,855 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:19:41,855 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:19:41,855 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:19:41,856 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:19:41,856 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_c3fc869b-c562-450c-83e3-fcb66cda3268/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68ec8a45185640c14efe48000e9f98891ce6fe2387f90662afdebba9912124a6 [2023-11-29 06:19:42,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:19:42,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:19:42,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:19:42,094 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:19:42,095 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:19:42,096 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-34.i [2023-11-29 06:19:44,820 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:19:45,002 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:19:45,003 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-34.i [2023-11-29 06:19:45,013 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/data/ae8c2d90e/a679669a662041e38d7d82d3151a7726/FLAG43a0c5282 [2023-11-29 06:19:45,026 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/data/ae8c2d90e/a679669a662041e38d7d82d3151a7726 [2023-11-29 06:19:45,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:19:45,029 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:19:45,030 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:19:45,030 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:19:45,034 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:19:45,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:19:45" (1/1) ... [2023-11-29 06:19:45,035 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64614835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:45, skipping insertion in model container [2023-11-29 06:19:45,036 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:19:45" (1/1) ... [2023-11-29 06:19:45,066 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:19:45,186 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_c3fc869b-c562-450c-83e3-fcb66cda3268/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-34.i[919,932] [2023-11-29 06:19:45,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:19:45,268 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:19:45,280 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_c3fc869b-c562-450c-83e3-fcb66cda3268/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-34.i[919,932] [2023-11-29 06:19:45,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:19:45,334 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:19:45,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:45 WrapperNode [2023-11-29 06:19:45,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:19:45,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:19:45,335 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:19:45,336 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:19:45,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:45" (1/1) ... [2023-11-29 06:19:45,356 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:45" (1/1) ... [2023-11-29 06:19:45,397 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 244 [2023-11-29 06:19:45,397 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:19:45,398 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:19:45,398 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:19:45,398 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:19:45,409 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:45" (1/1) ... [2023-11-29 06:19:45,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:45" (1/1) ... [2023-11-29 06:19:45,413 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:45" (1/1) ... [2023-11-29 06:19:45,433 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 06:19:45,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:45" (1/1) ... [2023-11-29 06:19:45,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:45" (1/1) ... [2023-11-29 06:19:45,446 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:45" (1/1) ... [2023-11-29 06:19:45,451 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:45" (1/1) ... [2023-11-29 06:19:45,454 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:45" (1/1) ... [2023-11-29 06:19:45,457 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:45" (1/1) ... [2023-11-29 06:19:45,461 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:19:45,462 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:19:45,463 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:19:45,463 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:19:45,464 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:45" (1/1) ... [2023-11-29 06:19:45,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:19:45,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:19:45,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:19:45,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:19:45,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:19:45,534 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 06:19:45,535 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 06:19:45,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:19:45,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:19:45,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:19:45,629 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:19:45,632 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:19:46,086 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:19:46,119 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:19:46,119 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 06:19:46,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:19:46 BoogieIcfgContainer [2023-11-29 06:19:46,120 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:19:46,123 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:19:46,123 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:19:46,127 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:19:46,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:19:45" (1/3) ... [2023-11-29 06:19:46,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77113f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:19:46, skipping insertion in model container [2023-11-29 06:19:46,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:45" (2/3) ... [2023-11-29 06:19:46,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77113f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:19:46, skipping insertion in model container [2023-11-29 06:19:46,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:19:46" (3/3) ... [2023-11-29 06:19:46,130 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-34.i [2023-11-29 06:19:46,149 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:19:46,150 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:19:46,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:19:46,203 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;@5d9f97a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:19:46,204 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:19:46,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 63 states have (on average 1.5714285714285714) internal successors, (99), 64 states have internal predecessors, (99), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-29 06:19:46,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-29 06:19:46,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:19:46,222 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:46,223 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:19:46,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:46,227 INFO L85 PathProgramCache]: Analyzing trace with hash -910426074, now seen corresponding path program 1 times [2023-11-29 06:19:46,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:19:46,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423895515] [2023-11-29 06:19:46,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:46,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:19:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:46,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:19:46,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423895515] [2023-11-29 06:19:46,441 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 06:19:46,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607059886] [2023-11-29 06:19:46,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:46,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:19:46,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:19:46,445 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:19:46,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:19:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:46,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 06:19:46,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:19:46,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2023-11-29 06:19:46,678 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:19:46,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607059886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:19:46,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:19:46,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:19:46,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557244809] [2023-11-29 06:19:46,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:19:46,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:19:46,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:19:46,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:19:46,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:19:46,719 INFO L87 Difference]: Start difference. First operand has 93 states, 63 states have (on average 1.5714285714285714) internal successors, (99), 64 states have internal predecessors, (99), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-29 06:19:46,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:19:46,761 INFO L93 Difference]: Finished difference Result 183 states and 331 transitions. [2023-11-29 06:19:46,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:19:46,764 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 175 [2023-11-29 06:19:46,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:19:46,772 INFO L225 Difference]: With dead ends: 183 [2023-11-29 06:19:46,773 INFO L226 Difference]: Without dead ends: 91 [2023-11-29 06:19:46,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 174 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 06:19:46,780 INFO L413 NwaCegarLoop]: 145 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, 145 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 06:19:46,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:19:46,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-29 06:19:46,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-29 06:19:46,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 62 states have (on average 1.5161290322580645) internal successors, (94), 62 states have internal predecessors, (94), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-29 06:19:46,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 148 transitions. [2023-11-29 06:19:46,829 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 148 transitions. Word has length 175 [2023-11-29 06:19:46,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:19:46,829 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 148 transitions. [2023-11-29 06:19:46,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-29 06:19:46,830 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 148 transitions. [2023-11-29 06:19:46,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-29 06:19:46,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:19:46,834 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:46,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:19:47,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 06:19:47,036 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:19:47,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:47,037 INFO L85 PathProgramCache]: Analyzing trace with hash -61617952, now seen corresponding path program 1 times [2023-11-29 06:19:47,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:19:47,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903945681] [2023-11-29 06:19:47,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:47,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:19:47,122 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:19:47,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [672928530] [2023-11-29 06:19:47,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:47,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:19:47,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:19:47,124 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:19:47,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:19:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:47,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 06:19:47,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:19:47,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 06:19:47,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:19:47,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:19:47,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903945681] [2023-11-29 06:19:47,592 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:19:47,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672928530] [2023-11-29 06:19:47,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672928530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:19:47,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:19:47,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:19:47,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082464582] [2023-11-29 06:19:47,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:19:47,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:19:47,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:19:47,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:19:47,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:19:47,596 INFO L87 Difference]: Start difference. First operand 91 states and 148 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:19:47,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:19:47,986 INFO L93 Difference]: Finished difference Result 270 states and 438 transitions. [2023-11-29 06:19:47,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:19:47,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2023-11-29 06:19:47,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:19:47,992 INFO L225 Difference]: With dead ends: 270 [2023-11-29 06:19:47,992 INFO L226 Difference]: Without dead ends: 180 [2023-11-29 06:19:47,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:19:47,995 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 156 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:19:47,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 511 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:19:47,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-29 06:19:48,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 93. [2023-11-29 06:19:48,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 64 states have (on average 1.5) internal successors, (96), 64 states have internal predecessors, (96), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-29 06:19:48,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 150 transitions. [2023-11-29 06:19:48,021 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 150 transitions. Word has length 175 [2023-11-29 06:19:48,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:19:48,024 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 150 transitions. [2023-11-29 06:19:48,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:19:48,024 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 150 transitions. [2023-11-29 06:19:48,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-29 06:19:48,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:19:48,028 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:48,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:19:48,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:19:48,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:19:48,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:48,234 INFO L85 PathProgramCache]: Analyzing trace with hash 115217117, now seen corresponding path program 1 times [2023-11-29 06:19:48,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:19:48,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732681256] [2023-11-29 06:19:48,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:48,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:19:48,281 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:19:48,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228182291] [2023-11-29 06:19:48,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:48,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:19:48,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:19:48,283 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:19:48,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:19:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:48,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:19:48,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:19:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 06:19:49,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:19:49,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:19:49,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732681256] [2023-11-29 06:19:49,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:19:49,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228182291] [2023-11-29 06:19:49,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228182291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:19:49,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:19:49,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:19:49,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930593032] [2023-11-29 06:19:49,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:19:49,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:19:49,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:19:49,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:19:49,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:19:49,076 INFO L87 Difference]: Start difference. First operand 93 states and 150 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:19:49,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:19:49,171 INFO L93 Difference]: Finished difference Result 316 states and 511 transitions. [2023-11-29 06:19:49,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:19:49,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2023-11-29 06:19:49,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:19:49,175 INFO L225 Difference]: With dead ends: 316 [2023-11-29 06:19:49,176 INFO L226 Difference]: Without dead ends: 224 [2023-11-29 06:19:49,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:19:49,178 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 252 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:19:49,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 424 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:19:49,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-29 06:19:49,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 193. [2023-11-29 06:19:49,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 136 states have (on average 1.5220588235294117) internal successors, (207), 136 states have internal predecessors, (207), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 06:19:49,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 315 transitions. [2023-11-29 06:19:49,216 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 315 transitions. Word has length 176 [2023-11-29 06:19:49,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:19:49,217 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 315 transitions. [2023-11-29 06:19:49,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:19:49,218 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 315 transitions. [2023-11-29 06:19:49,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-29 06:19:49,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:19:49,221 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:49,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:19:49,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 06:19:49,422 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:19:49,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:49,422 INFO L85 PathProgramCache]: Analyzing trace with hash 2080638521, now seen corresponding path program 1 times [2023-11-29 06:19:49,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:19:49,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737387209] [2023-11-29 06:19:49,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:49,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:19:49,466 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:19:49,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982905356] [2023-11-29 06:19:49,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:49,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:19:49,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:19:49,468 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:19:49,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:19:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:49,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 06:19:49,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:19:51,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 06:19:51,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:19:51,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:19:51,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737387209] [2023-11-29 06:19:51,287 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:19:51,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982905356] [2023-11-29 06:19:51,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982905356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:19:51,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:19:51,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 06:19:51,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117226435] [2023-11-29 06:19:51,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:19:51,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:19:51,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:19:51,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:19:51,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:19:51,290 INFO L87 Difference]: Start difference. First operand 193 states and 315 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:19:53,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:19:53,496 INFO L93 Difference]: Finished difference Result 725 states and 1165 transitions. [2023-11-29 06:19:53,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 06:19:53,496 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-11-29 06:19:53,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:19:53,502 INFO L225 Difference]: With dead ends: 725 [2023-11-29 06:19:53,502 INFO L226 Difference]: Without dead ends: 533 [2023-11-29 06:19:53,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-29 06:19:53,505 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 383 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:19:53,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 834 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 06:19:53,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-11-29 06:19:53,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 460. [2023-11-29 06:19:53,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 335 states have (on average 1.51044776119403) internal successors, (506), 337 states have internal predecessors, (506), 118 states have call successors, (118), 6 states have call predecessors, (118), 6 states have return successors, (118), 116 states have call predecessors, (118), 118 states have call successors, (118) [2023-11-29 06:19:53,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 742 transitions. [2023-11-29 06:19:53,583 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 742 transitions. Word has length 177 [2023-11-29 06:19:53,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:19:53,584 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 742 transitions. [2023-11-29 06:19:53,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:19:53,585 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 742 transitions. [2023-11-29 06:19:53,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-29 06:19:53,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:19:53,587 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:53,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 06:19:53,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:19:53,788 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:19:53,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:53,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2023380219, now seen corresponding path program 1 times [2023-11-29 06:19:53,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:19:53,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095757498] [2023-11-29 06:19:53,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:53,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:19:53,822 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:19:53,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636647975] [2023-11-29 06:19:53,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:53,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:19:53,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:19:53,825 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:19:53,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:19:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:54,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:19:54,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:19:54,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 06:19:54,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:19:54,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:19:54,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095757498] [2023-11-29 06:19:54,384 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:19:54,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636647975] [2023-11-29 06:19:54,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636647975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:19:54,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:19:54,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:19:54,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892741964] [2023-11-29 06:19:54,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:19:54,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:19:54,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:19:54,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:19:54,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:19:54,387 INFO L87 Difference]: Start difference. First operand 460 states and 742 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:19:54,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:19:54,550 INFO L93 Difference]: Finished difference Result 784 states and 1268 transitions. [2023-11-29 06:19:54,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:19:54,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-11-29 06:19:54,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:19:54,554 INFO L225 Difference]: With dead ends: 784 [2023-11-29 06:19:54,554 INFO L226 Difference]: Without dead ends: 332 [2023-11-29 06:19:54,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:19:54,557 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 91 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:19:54,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 418 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:19:54,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-11-29 06:19:54,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 270. [2023-11-29 06:19:54,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 185 states have (on average 1.508108108108108) internal successors, (279), 185 states have internal predecessors, (279), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-11-29 06:19:54,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 441 transitions. [2023-11-29 06:19:54,593 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 441 transitions. Word has length 177 [2023-11-29 06:19:54,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:19:54,593 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 441 transitions. [2023-11-29 06:19:54,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:19:54,594 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 441 transitions. [2023-11-29 06:19:54,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-29 06:19:54,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:19:54,596 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:54,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:19:54,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:19:54,797 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:19:54,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:54,798 INFO L85 PathProgramCache]: Analyzing trace with hash -934465097, now seen corresponding path program 1 times [2023-11-29 06:19:54,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:19:54,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326681056] [2023-11-29 06:19:54,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:54,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:19:54,827 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:19:54,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2097849206] [2023-11-29 06:19:54,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:54,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:19:54,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:19:54,829 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:19:54,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:19:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:54,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 06:19:54,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:19:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 06:19:58,468 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:19:58,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:19:58,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326681056] [2023-11-29 06:19:58,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:19:58,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097849206] [2023-11-29 06:19:58,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097849206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:19:58,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:19:58,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 06:19:58,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924345440] [2023-11-29 06:19:58,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:19:58,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:19:58,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:19:58,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:19:58,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:19:58,471 INFO L87 Difference]: Start difference. First operand 270 states and 441 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:20:03,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:20:03,557 INFO L93 Difference]: Finished difference Result 826 states and 1329 transitions. [2023-11-29 06:20:03,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 06:20:03,558 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-11-29 06:20:03,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:20:03,563 INFO L225 Difference]: With dead ends: 826 [2023-11-29 06:20:03,563 INFO L226 Difference]: Without dead ends: 634 [2023-11-29 06:20:03,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-29 06:20:03,565 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 461 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:20:03,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 665 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 06:20:03,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2023-11-29 06:20:03,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 545. [2023-11-29 06:20:03,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 397 states have (on average 1.5113350125944585) internal successors, (600), 398 states have internal predecessors, (600), 140 states have call successors, (140), 7 states have call predecessors, (140), 7 states have return successors, (140), 139 states have call predecessors, (140), 140 states have call successors, (140) [2023-11-29 06:20:03,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 880 transitions. [2023-11-29 06:20:03,634 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 880 transitions. Word has length 177 [2023-11-29 06:20:03,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:20:03,634 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 880 transitions. [2023-11-29 06:20:03,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:20:03,635 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 880 transitions. [2023-11-29 06:20:03,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-29 06:20:03,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:20:03,636 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:03,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:20:03,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:20:03,837 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:20:03,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:20:03,838 INFO L85 PathProgramCache]: Analyzing trace with hash -991723399, now seen corresponding path program 1 times [2023-11-29 06:20:03,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:20:03,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75249200] [2023-11-29 06:20:03,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:20:03,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:20:03,865 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:20:03,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031378243] [2023-11-29 06:20:03,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:20:03,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:20:03,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:20:03,867 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:20:03,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:20:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:20:04,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 06:20:04,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:20:12,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 591 proven. 171 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2023-11-29 06:20:12,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:20:47,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 06:20:47,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:20:47,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75249200] [2023-11-29 06:20:47,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:20:47,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031378243] [2023-11-29 06:20:47,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031378243] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 06:20:47,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:20:47,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21] total 28 [2023-11-29 06:20:47,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793761926] [2023-11-29 06:20:47,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:20:47,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:20:47,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:20:47,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:20:47,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2023-11-29 06:20:47,514 INFO L87 Difference]: Start difference. First operand 545 states and 880 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:21:02,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 06:21:08,726 WARN L293 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 217 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:21:15,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 06:21:20,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 06:21:34,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 06:21:36,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 06:21:40,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 06:21:44,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 06:21:52,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:21:52,434 INFO L93 Difference]: Finished difference Result 1256 states and 1987 transitions. [2023-11-29 06:21:52,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:21:52,436 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-11-29 06:21:52,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:21:52,441 INFO L225 Difference]: With dead ends: 1256 [2023-11-29 06:21:52,441 INFO L226 Difference]: Without dead ends: 789 [2023-11-29 06:21:52,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 35.4s TimeCoverageRelationStatistics Valid=222, Invalid=1037, Unknown=1, NotChecked=0, Total=1260 [2023-11-29 06:21:52,444 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 292 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 8 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:21:52,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 748 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 420 Invalid, 4 Unknown, 0 Unchecked, 41.5s Time] [2023-11-29 06:21:52,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2023-11-29 06:21:52,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 568. [2023-11-29 06:21:52,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 423 states have (on average 1.4822695035460993) internal successors, (627), 423 states have internal predecessors, (627), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2023-11-29 06:21:52,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 897 transitions. [2023-11-29 06:21:52,535 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 897 transitions. Word has length 177 [2023-11-29 06:21:52,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:21:52,536 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 897 transitions. [2023-11-29 06:21:52,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:21:52,537 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 897 transitions. [2023-11-29 06:21:52,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-29 06:21:52,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:21:52,539 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:21:52,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 06:21:52,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:21:52,741 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:21:52,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:21:52,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1743811723, now seen corresponding path program 1 times [2023-11-29 06:21:52,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:21:52,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283594079] [2023-11-29 06:21:52,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:21:52,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:21:52,770 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:21:52,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [986124245] [2023-11-29 06:21:52,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:21:52,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:21:52,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:21:52,771 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:21:52,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:21:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:21:52,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 06:21:52,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:21:59,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 06:21:59,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:21:59,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:21:59,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283594079] [2023-11-29 06:21:59,946 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:21:59,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986124245] [2023-11-29 06:21:59,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986124245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:21:59,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:21:59,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 06:21:59,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692181874] [2023-11-29 06:21:59,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:21:59,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:21:59,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:21:59,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:21:59,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:21:59,948 INFO L87 Difference]: Start difference. First operand 568 states and 897 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:22:08,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:22:08,236 INFO L93 Difference]: Finished difference Result 1185 states and 1853 transitions. [2023-11-29 06:22:08,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 06:22:08,237 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-11-29 06:22:08,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:22:08,241 INFO L225 Difference]: With dead ends: 1185 [2023-11-29 06:22:08,241 INFO L226 Difference]: Without dead ends: 703 [2023-11-29 06:22:08,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-29 06:22:08,243 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 439 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:22:08,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 661 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-29 06:22:08,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2023-11-29 06:22:08,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 572. [2023-11-29 06:22:08,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 427 states have (on average 1.4824355971896956) internal successors, (633), 427 states have internal predecessors, (633), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2023-11-29 06:22:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 903 transitions. [2023-11-29 06:22:08,375 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 903 transitions. Word has length 177 [2023-11-29 06:22:08,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:22:08,376 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 903 transitions. [2023-11-29 06:22:08,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:22:08,376 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 903 transitions. [2023-11-29 06:22:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-29 06:22:08,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:22:08,378 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:22:08,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 06:22:08,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:22:08,578 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:22:08,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:22:08,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1801070025, now seen corresponding path program 1 times [2023-11-29 06:22:08,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:22:08,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010758313] [2023-11-29 06:22:08,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:22:08,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:22:08,608 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:22:08,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [172979327] [2023-11-29 06:22:08,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:22:08,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:22:08,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:22:08,609 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:22:08,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:22:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:22:09,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 06:22:09,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:22:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 222 proven. 72 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2023-11-29 06:22:10,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:22:52,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:22:52,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010758313] [2023-11-29 06:22:52,644 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:22:52,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172979327] [2023-11-29 06:22:52,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172979327] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:22:52,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:22:52,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-29 06:22:52,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162042176] [2023-11-29 06:22:52,644 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 06:22:52,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:22:52,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:22:52,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:22:52,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:22:52,645 INFO L87 Difference]: Start difference. First operand 572 states and 903 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-29 06:22:54,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:22:54,177 INFO L93 Difference]: Finished difference Result 1411 states and 2192 transitions. [2023-11-29 06:22:54,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:22:54,178 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 177 [2023-11-29 06:22:54,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:22:54,184 INFO L225 Difference]: With dead ends: 1411 [2023-11-29 06:22:54,184 INFO L226 Difference]: Without dead ends: 888 [2023-11-29 06:22:54,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2023-11-29 06:22:54,187 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 330 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:22:54,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 552 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 06:22:54,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2023-11-29 06:22:54,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 762. [2023-11-29 06:22:54,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 616 states have (on average 1.4756493506493507) internal successors, (909), 616 states have internal predecessors, (909), 135 states have call successors, (135), 10 states have call predecessors, (135), 10 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2023-11-29 06:22:54,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1179 transitions. [2023-11-29 06:22:54,298 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1179 transitions. Word has length 177 [2023-11-29 06:22:54,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:22:54,299 INFO L495 AbstractCegarLoop]: Abstraction has 762 states and 1179 transitions. [2023-11-29 06:22:54,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-29 06:22:54,299 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1179 transitions. [2023-11-29 06:22:54,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-29 06:22:54,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:22:54,302 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:22:54,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 06:22:54,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:22:54,502 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:22:54,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:22:54,503 INFO L85 PathProgramCache]: Analyzing trace with hash 687130854, now seen corresponding path program 1 times [2023-11-29 06:22:54,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:22:54,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388819332] [2023-11-29 06:22:54,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:22:54,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:22:54,528 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:22:54,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1610049879] [2023-11-29 06:22:54,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:22:54,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:22:54,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:22:54,529 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:22:54,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 06:22:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:22:54,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 06:22:54,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:22:56,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 06:22:56,444 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:22:56,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:22:56,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388819332] [2023-11-29 06:22:56,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:22:56,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610049879] [2023-11-29 06:22:56,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610049879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:22:56,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:22:56,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 06:22:56,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042658870] [2023-11-29 06:22:56,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:22:56,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:22:56,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:22:56,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:22:56,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:22:56,446 INFO L87 Difference]: Start difference. First operand 762 states and 1179 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:22:58,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:22:58,703 INFO L93 Difference]: Finished difference Result 1663 states and 2553 transitions. [2023-11-29 06:22:58,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 06:22:58,704 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-11-29 06:22:58,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:22:58,713 INFO L225 Difference]: With dead ends: 1663 [2023-11-29 06:22:58,713 INFO L226 Difference]: Without dead ends: 1385 [2023-11-29 06:22:58,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-11-29 06:22:58,715 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 572 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:22:58,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 868 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 06:22:58,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2023-11-29 06:22:58,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1079. [2023-11-29 06:22:58,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 875 states have (on average 1.473142857142857) internal successors, (1289), 875 states have internal predecessors, (1289), 189 states have call successors, (189), 14 states have call predecessors, (189), 14 states have return successors, (189), 189 states have call predecessors, (189), 189 states have call successors, (189) [2023-11-29 06:22:58,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1667 transitions. [2023-11-29 06:22:58,874 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1667 transitions. Word has length 177 [2023-11-29 06:22:58,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:22:58,875 INFO L495 AbstractCegarLoop]: Abstraction has 1079 states and 1667 transitions. [2023-11-29 06:22:58,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:22:58,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1667 transitions. [2023-11-29 06:22:58,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-29 06:22:58,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:22:58,877 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:22:58,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 06:22:59,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:22:59,078 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:22:59,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:22:59,079 INFO L85 PathProgramCache]: Analyzing trace with hash 629872552, now seen corresponding path program 1 times [2023-11-29 06:22:59,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:22:59,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050092702] [2023-11-29 06:22:59,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:22:59,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:22:59,101 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:22:59,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913364557] [2023-11-29 06:22:59,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:22:59,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:22:59,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:22:59,103 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:22:59,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 06:22:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:22:59,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 06:22:59,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:00,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 222 proven. 72 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2023-11-29 06:23:00,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:23:01,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 06:23:01,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:01,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050092702] [2023-11-29 06:23:01,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:23:01,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913364557] [2023-11-29 06:23:01,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913364557] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 06:23:01,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:23:01,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 17 [2023-11-29 06:23:01,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884267051] [2023-11-29 06:23:01,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:01,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:23:01,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:01,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:23:01,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:23:01,877 INFO L87 Difference]: Start difference. First operand 1079 states and 1667 transitions. Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 9 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-29 06:23:05,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:05,867 INFO L93 Difference]: Finished difference Result 5502 states and 8624 transitions. [2023-11-29 06:23:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 06:23:05,868 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 9 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 177 [2023-11-29 06:23:05,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:05,888 INFO L225 Difference]: With dead ends: 5502 [2023-11-29 06:23:05,888 INFO L226 Difference]: Without dead ends: 4907 [2023-11-29 06:23:05,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=275, Invalid=1131, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 06:23:05,891 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 727 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:05,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1659 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 06:23:05,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4907 states. [2023-11-29 06:23:06,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4907 to 2695. [2023-11-29 06:23:06,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2695 states, 2143 states have (on average 1.4773681754549697) internal successors, (3166), 2143 states have internal predecessors, (3166), 513 states have call successors, (513), 38 states have call predecessors, (513), 38 states have return successors, (513), 513 states have call predecessors, (513), 513 states have call successors, (513) [2023-11-29 06:23:06,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2695 states to 2695 states and 4192 transitions. [2023-11-29 06:23:06,364 INFO L78 Accepts]: Start accepts. Automaton has 2695 states and 4192 transitions. Word has length 177 [2023-11-29 06:23:06,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:06,365 INFO L495 AbstractCegarLoop]: Abstraction has 2695 states and 4192 transitions. [2023-11-29 06:23:06,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 9 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-29 06:23:06,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2695 states and 4192 transitions. [2023-11-29 06:23:06,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-29 06:23:06,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:06,368 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:06,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 06:23:06,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:23:06,569 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:23:06,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:06,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1293675063, now seen corresponding path program 1 times [2023-11-29 06:23:06,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:06,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942071649] [2023-11-29 06:23:06,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:06,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:06,592 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:23:06,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340105271] [2023-11-29 06:23:06,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:06,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:23:06,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:23:06,594 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:23:06,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 06:23:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:06,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 06:23:06,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 06:23:12,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:23:12,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:12,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942071649] [2023-11-29 06:23:12,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:23:12,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340105271] [2023-11-29 06:23:12,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340105271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:12,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:12,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 06:23:12,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115633797] [2023-11-29 06:23:12,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:12,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:23:12,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:12,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:23:12,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:23:12,418 INFO L87 Difference]: Start difference. First operand 2695 states and 4192 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:23:21,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:21,300 INFO L93 Difference]: Finished difference Result 4275 states and 6645 transitions. [2023-11-29 06:23:21,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 06:23:21,300 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-11-29 06:23:21,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:21,313 INFO L225 Difference]: With dead ends: 4275 [2023-11-29 06:23:21,314 INFO L226 Difference]: Without dead ends: 3104 [2023-11-29 06:23:21,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-29 06:23:21,316 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 428 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:21,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 1073 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-29 06:23:21,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2023-11-29 06:23:21,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 2967. [2023-11-29 06:23:21,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2967 states, 2328 states have (on average 1.4630584192439862) internal successors, (3406), 2328 states have internal predecessors, (3406), 594 states have call successors, (594), 44 states have call predecessors, (594), 44 states have return successors, (594), 594 states have call predecessors, (594), 594 states have call successors, (594) [2023-11-29 06:23:21,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 4594 transitions. [2023-11-29 06:23:21,804 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 4594 transitions. Word has length 177 [2023-11-29 06:23:21,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:21,804 INFO L495 AbstractCegarLoop]: Abstraction has 2967 states and 4594 transitions. [2023-11-29 06:23:21,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:23:21,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 4594 transitions. [2023-11-29 06:23:21,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-29 06:23:21,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:21,807 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:21,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 06:23:22,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:23:22,008 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:23:22,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:22,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2088242061, now seen corresponding path program 1 times [2023-11-29 06:23:22,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:22,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272853948] [2023-11-29 06:23:22,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:22,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:22,032 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:23:22,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838098228] [2023-11-29 06:23:22,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:22,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:23:22,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:23:22,034 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:23:22,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 06:23:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:23,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 06:23:23,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:24,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 06:23:24,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:23:24,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:24,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272853948] [2023-11-29 06:23:24,407 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:23:24,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838098228] [2023-11-29 06:23:24,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838098228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:24,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:24,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 06:23:24,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677790583] [2023-11-29 06:23:24,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:24,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:23:24,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:24,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:23:24,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:23:24,409 INFO L87 Difference]: Start difference. First operand 2967 states and 4594 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:23:26,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:26,011 INFO L93 Difference]: Finished difference Result 4312 states and 6664 transitions. [2023-11-29 06:23:26,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:23:26,012 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2023-11-29 06:23:26,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:26,033 INFO L225 Difference]: With dead ends: 4312 [2023-11-29 06:23:26,033 INFO L226 Difference]: Without dead ends: 3684 [2023-11-29 06:23:26,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:23:26,036 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 164 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:26,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 607 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 06:23:26,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3684 states. [2023-11-29 06:23:26,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3684 to 3026. [2023-11-29 06:23:26,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3026 states, 2387 states have (on average 1.4713028906577295) internal successors, (3512), 2387 states have internal predecessors, (3512), 594 states have call successors, (594), 44 states have call predecessors, (594), 44 states have return successors, (594), 594 states have call predecessors, (594), 594 states have call successors, (594) [2023-11-29 06:23:26,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3026 states to 3026 states and 4700 transitions. [2023-11-29 06:23:26,521 INFO L78 Accepts]: Start accepts. Automaton has 3026 states and 4700 transitions. Word has length 178 [2023-11-29 06:23:26,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:26,521 INFO L495 AbstractCegarLoop]: Abstraction has 3026 states and 4700 transitions. [2023-11-29 06:23:26,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:23:26,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3026 states and 4700 transitions. [2023-11-29 06:23:26,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-29 06:23:26,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:26,524 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:26,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 06:23:26,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:23:26,725 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:23:26,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:26,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1678115535, now seen corresponding path program 1 times [2023-11-29 06:23:26,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:26,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605031257] [2023-11-29 06:23:26,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:26,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:26,742 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:23:26,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252720406] [2023-11-29 06:23:26,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:26,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:23:26,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:23:26,745 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:23:26,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 06:23:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:26,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 06:23:26,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:28,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 06:23:28,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:23:28,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:28,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605031257] [2023-11-29 06:23:28,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:23:28,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252720406] [2023-11-29 06:23:28,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252720406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:28,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:28,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 06:23:28,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829621726] [2023-11-29 06:23:28,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:28,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:23:28,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:28,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:23:28,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:23:28,776 INFO L87 Difference]: Start difference. First operand 3026 states and 4700 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:23:31,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:31,633 INFO L93 Difference]: Finished difference Result 4591 states and 7112 transitions. [2023-11-29 06:23:31,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 06:23:31,633 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2023-11-29 06:23:31,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:31,657 INFO L225 Difference]: With dead ends: 4591 [2023-11-29 06:23:31,657 INFO L226 Difference]: Without dead ends: 4191 [2023-11-29 06:23:31,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-11-29 06:23:31,660 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 489 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:31,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 1230 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 06:23:31,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4191 states. [2023-11-29 06:23:32,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4191 to 3648. [2023-11-29 06:23:32,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 2835 states have (on average 1.4631393298059965) internal successors, (4148), 2835 states have internal predecessors, (4148), 756 states have call successors, (756), 56 states have call predecessors, (756), 56 states have return successors, (756), 756 states have call predecessors, (756), 756 states have call successors, (756) [2023-11-29 06:23:32,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 5660 transitions. [2023-11-29 06:23:32,405 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 5660 transitions. Word has length 178 [2023-11-29 06:23:32,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:32,405 INFO L495 AbstractCegarLoop]: Abstraction has 3648 states and 5660 transitions. [2023-11-29 06:23:32,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:23:32,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 5660 transitions. [2023-11-29 06:23:32,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-29 06:23:32,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:32,407 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:32,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 06:23:32,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:23:32,608 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:23:32,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:32,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1735373837, now seen corresponding path program 1 times [2023-11-29 06:23:32,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:32,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818463300] [2023-11-29 06:23:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:32,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:32,625 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:23:32,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543834321] [2023-11-29 06:23:32,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:32,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:23:32,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:23:32,626 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:23:32,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 06:23:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:32,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:23:32,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:34,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 06:23:34,225 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:23:34,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:34,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818463300] [2023-11-29 06:23:34,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:23:34,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543834321] [2023-11-29 06:23:34,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543834321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:34,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:34,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 06:23:34,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072017573] [2023-11-29 06:23:34,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:34,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:23:34,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:34,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:23:34,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:23:34,227 INFO L87 Difference]: Start difference. First operand 3648 states and 5660 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:23:36,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:36,511 INFO L93 Difference]: Finished difference Result 5144 states and 7989 transitions. [2023-11-29 06:23:36,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:23:36,512 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2023-11-29 06:23:36,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:36,539 INFO L225 Difference]: With dead ends: 5144 [2023-11-29 06:23:36,539 INFO L226 Difference]: Without dead ends: 4430 [2023-11-29 06:23:36,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:23:36,543 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 219 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:36,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1228 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 06:23:36,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4430 states. [2023-11-29 06:23:37,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4430 to 4172. [2023-11-29 06:23:37,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4172 states, 3185 states have (on average 1.4470957613814757) internal successors, (4609), 3185 states have internal predecessors, (4609), 918 states have call successors, (918), 68 states have call predecessors, (918), 68 states have return successors, (918), 918 states have call predecessors, (918), 918 states have call successors, (918) [2023-11-29 06:23:37,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4172 states to 4172 states and 6445 transitions. [2023-11-29 06:23:37,360 INFO L78 Accepts]: Start accepts. Automaton has 4172 states and 6445 transitions. Word has length 178 [2023-11-29 06:23:37,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:37,360 INFO L495 AbstractCegarLoop]: Abstraction has 4172 states and 6445 transitions. [2023-11-29 06:23:37,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:23:37,361 INFO L276 IsEmpty]: Start isEmpty. Operand 4172 states and 6445 transitions. [2023-11-29 06:23:37,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-29 06:23:37,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:37,363 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:37,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 06:23:37,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 06:23:37,563 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:23:37,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:37,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1917847670, now seen corresponding path program 1 times [2023-11-29 06:23:37,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:37,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604477904] [2023-11-29 06:23:37,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:37,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:37,589 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:23:37,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144307639] [2023-11-29 06:23:37,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:37,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:23:37,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:23:37,591 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:23:37,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 06:23:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:38,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 06:23:38,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:39,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 06:23:39,753 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:23:39,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:39,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604477904] [2023-11-29 06:23:39,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:23:39,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144307639] [2023-11-29 06:23:39,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144307639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:39,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:39,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 06:23:39,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275670362] [2023-11-29 06:23:39,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:39,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:23:39,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:39,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:23:39,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:23:39,755 INFO L87 Difference]: Start difference. First operand 4172 states and 6445 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:23:43,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:43,985 INFO L93 Difference]: Finished difference Result 8376 states and 12801 transitions. [2023-11-29 06:23:43,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:23:43,985 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2023-11-29 06:23:43,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:44,001 INFO L225 Difference]: With dead ends: 8376 [2023-11-29 06:23:44,001 INFO L226 Difference]: Without dead ends: 4874 [2023-11-29 06:23:44,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2023-11-29 06:23:44,009 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 347 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:44,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 836 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 06:23:44,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2023-11-29 06:23:44,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 4164. [2023-11-29 06:23:44,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4164 states, 3177 states have (on average 1.4450739691532892) internal successors, (4591), 3177 states have internal predecessors, (4591), 918 states have call successors, (918), 68 states have call predecessors, (918), 68 states have return successors, (918), 918 states have call predecessors, (918), 918 states have call successors, (918) [2023-11-29 06:23:44,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4164 states to 4164 states and 6427 transitions. [2023-11-29 06:23:44,760 INFO L78 Accepts]: Start accepts. Automaton has 4164 states and 6427 transitions. Word has length 178 [2023-11-29 06:23:44,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:44,761 INFO L495 AbstractCegarLoop]: Abstraction has 4164 states and 6427 transitions. [2023-11-29 06:23:44,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:23:44,761 INFO L276 IsEmpty]: Start isEmpty. Operand 4164 states and 6427 transitions. [2023-11-29 06:23:44,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-29 06:23:44,764 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:44,764 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:44,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 06:23:44,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:23:44,965 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:23:44,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:44,965 INFO L85 PathProgramCache]: Analyzing trace with hash 367550792, now seen corresponding path program 1 times [2023-11-29 06:23:44,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:44,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484758714] [2023-11-29 06:23:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:44,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:44,985 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:23:44,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [204402987] [2023-11-29 06:23:44,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:44,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:23:44,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:23:44,986 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:23:44,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 06:23:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:45,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 06:23:45,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 06:23:52,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:23:52,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:52,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484758714] [2023-11-29 06:23:52,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:23:52,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204402987] [2023-11-29 06:23:52,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204402987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:52,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:52,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 06:23:52,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748408605] [2023-11-29 06:23:52,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:52,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:23:52,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:52,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:23:52,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:23:52,757 INFO L87 Difference]: Start difference. First operand 4164 states and 6427 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:24:05,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:05,539 INFO L93 Difference]: Finished difference Result 6672 states and 10328 transitions. [2023-11-29 06:24:05,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 06:24:05,540 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2023-11-29 06:24:05,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:05,552 INFO L225 Difference]: With dead ends: 6672 [2023-11-29 06:24:05,553 INFO L226 Difference]: Without dead ends: 4283 [2023-11-29 06:24:05,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-29 06:24:05,560 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 394 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:24:05,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 1145 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-11-29 06:24:05,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4283 states. [2023-11-29 06:24:06,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4283 to 4169. [2023-11-29 06:24:06,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4169 states, 3182 states have (on average 1.444688874921433) internal successors, (4597), 3182 states have internal predecessors, (4597), 918 states have call successors, (918), 68 states have call predecessors, (918), 68 states have return successors, (918), 918 states have call predecessors, (918), 918 states have call successors, (918) [2023-11-29 06:24:06,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4169 states to 4169 states and 6433 transitions. [2023-11-29 06:24:06,195 INFO L78 Accepts]: Start accepts. Automaton has 4169 states and 6433 transitions. Word has length 178 [2023-11-29 06:24:06,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:06,196 INFO L495 AbstractCegarLoop]: Abstraction has 4169 states and 6433 transitions. [2023-11-29 06:24:06,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:24:06,196 INFO L276 IsEmpty]: Start isEmpty. Operand 4169 states and 6433 transitions. [2023-11-29 06:24:06,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-29 06:24:06,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:06,198 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:06,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 06:24:06,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 06:24:06,399 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:06,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:06,399 INFO L85 PathProgramCache]: Analyzing trace with hash -805580756, now seen corresponding path program 1 times [2023-11-29 06:24:06,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:06,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556521686] [2023-11-29 06:24:06,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:06,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:06,418 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:24:06,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921578356] [2023-11-29 06:24:06,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:06,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:06,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:24:06,420 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:24:06,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 06:24:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:06,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:24:06,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:24:06,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 656 proven. 51 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2023-11-29 06:24:06,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:24:07,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 27 proven. 51 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2023-11-29 06:24:07,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:07,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556521686] [2023-11-29 06:24:07,204 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:24:07,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921578356] [2023-11-29 06:24:07,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921578356] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:24:07,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:24:07,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-11-29 06:24:07,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755088527] [2023-11-29 06:24:07,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:24:07,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:24:07,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:07,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:24:07,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:24:07,207 INFO L87 Difference]: Start difference. First operand 4169 states and 6433 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-11-29 06:24:11,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:11,081 INFO L93 Difference]: Finished difference Result 9704 states and 14583 transitions. [2023-11-29 06:24:11,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-29 06:24:11,082 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) Word has length 179 [2023-11-29 06:24:11,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:11,101 INFO L225 Difference]: With dead ends: 9704 [2023-11-29 06:24:11,101 INFO L226 Difference]: Without dead ends: 7029 [2023-11-29 06:24:11,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=904, Invalid=3386, Unknown=0, NotChecked=0, Total=4290 [2023-11-29 06:24:11,111 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 1824 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 1691 mSolverCounterSat, 940 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 2631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 940 IncrementalHoareTripleChecker+Valid, 1691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:24:11,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1843 Valid, 1980 Invalid, 2631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [940 Valid, 1691 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 06:24:11,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7029 states. [2023-11-29 06:24:12,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7029 to 5198. [2023-11-29 06:24:12,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5198 states, 3923 states have (on average 1.4063216925822075) internal successors, (5517), 3938 states have internal predecessors, (5517), 1134 states have call successors, (1134), 140 states have call predecessors, (1134), 140 states have return successors, (1134), 1119 states have call predecessors, (1134), 1134 states have call successors, (1134) [2023-11-29 06:24:12,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5198 states to 5198 states and 7785 transitions. [2023-11-29 06:24:12,124 INFO L78 Accepts]: Start accepts. Automaton has 5198 states and 7785 transitions. Word has length 179 [2023-11-29 06:24:12,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:12,124 INFO L495 AbstractCegarLoop]: Abstraction has 5198 states and 7785 transitions. [2023-11-29 06:24:12,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-11-29 06:24:12,124 INFO L276 IsEmpty]: Start isEmpty. Operand 5198 states and 7785 transitions. [2023-11-29 06:24:12,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-29 06:24:12,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:12,126 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:12,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 06:24:12,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 06:24:12,327 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:12,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:12,327 INFO L85 PathProgramCache]: Analyzing trace with hash -293851526, now seen corresponding path program 1 times [2023-11-29 06:24:12,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:12,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819344141] [2023-11-29 06:24:12,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:12,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:12,348 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:24:12,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840438426] [2023-11-29 06:24:12,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:12,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:12,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:24:12,350 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:24:12,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 06:24:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:12,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 06:24:12,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:26:43,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-11-29 06:26:43,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:26:43,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:26:43,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819344141] [2023-11-29 06:26:43,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:26:43,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840438426] [2023-11-29 06:26:43,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840438426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:26:43,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:26:43,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 06:26:43,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104186274] [2023-11-29 06:26:43,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:26:43,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:26:43,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:26:43,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:26:43,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:26:43,806 INFO L87 Difference]: Start difference. First operand 5198 states and 7785 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:26:45,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:26:45,654 INFO L93 Difference]: Finished difference Result 10684 states and 15921 transitions. [2023-11-29 06:26:45,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 06:26:45,655 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 180 [2023-11-29 06:26:45,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:26:45,669 INFO L225 Difference]: With dead ends: 10684 [2023-11-29 06:26:45,670 INFO L226 Difference]: Without dead ends: 5894 [2023-11-29 06:26:45,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2023-11-29 06:26:45,680 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 396 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:26:45,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 969 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 06:26:45,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5894 states. [2023-11-29 06:26:46,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5894 to 5264. [2023-11-29 06:26:46,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5264 states, 3989 states have (on average 1.4061168212584607) internal successors, (5609), 4004 states have internal predecessors, (5609), 1134 states have call successors, (1134), 140 states have call predecessors, (1134), 140 states have return successors, (1134), 1119 states have call predecessors, (1134), 1134 states have call successors, (1134) [2023-11-29 06:26:46,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 7877 transitions. [2023-11-29 06:26:46,634 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 7877 transitions. Word has length 180 [2023-11-29 06:26:46,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:26:46,634 INFO L495 AbstractCegarLoop]: Abstraction has 5264 states and 7877 transitions. [2023-11-29 06:26:46,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-29 06:26:46,635 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 7877 transitions. [2023-11-29 06:26:46,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-29 06:26:46,637 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:26:46,637 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:46,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 06:26:46,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:26:46,838 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:26:46,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:26:46,838 INFO L85 PathProgramCache]: Analyzing trace with hash -355891140, now seen corresponding path program 1 times [2023-11-29 06:26:46,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:26:46,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312807683] [2023-11-29 06:26:46,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:26:46,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:26:46,855 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:26:46,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2120429695] [2023-11-29 06:26:46,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:26:46,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:26:46,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:26:46,856 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:26:46,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3fc869b-c562-450c-83e3-fcb66cda3268/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 06:26:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:26:46,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 06:26:46,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:28:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 708 proven. 45 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2023-11-29 06:28:27,754 INFO L327 TraceCheckSpWp]: Computing backward predicates...