./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-34.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/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_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-34.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/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_4c268339-45ef-4201-99d5-db55f4bcbfcd/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 56ab96e739c021e0a820f09f7d8df07ac4eb08fdb70334870660d3f078d5cedf --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:11:17,709 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:11:17,773 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:11:17,779 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:11:17,780 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:11:17,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:11:17,805 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:11:17,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:11:17,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:11:17,807 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:11:17,808 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:11:17,808 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:11:17,809 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:11:17,809 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:11:17,810 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:11:17,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:11:17,811 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:11:17,811 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:11:17,812 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:11:17,812 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:11:17,813 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:11:17,813 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:11:17,814 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:11:17,814 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:11:17,814 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:11:17,815 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:11:17,815 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:11:17,816 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:11:17,816 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:11:17,816 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:11:17,817 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:11:17,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:11:17,818 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:11:17,818 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:11:17,819 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:11:17,819 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:11:17,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:11:17,820 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:11:17,820 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:11:17,820 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:11:17,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:11:17,821 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:11:17,821 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_4c268339-45ef-4201-99d5-db55f4bcbfcd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56ab96e739c021e0a820f09f7d8df07ac4eb08fdb70334870660d3f078d5cedf [2023-11-29 05:11:18,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:11:18,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:11:18,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:11:18,093 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:11:18,093 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:11:18,095 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-34.i [2023-11-29 05:11:20,817 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:11:21,000 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:11:21,001 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-34.i [2023-11-29 05:11:21,010 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/data/a2492d206/e26626d3c1e2424d96476f4be829b0e8/FLAG021df6e03 [2023-11-29 05:11:21,022 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/data/a2492d206/e26626d3c1e2424d96476f4be829b0e8 [2023-11-29 05:11:21,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:11:21,025 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:11:21,027 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:11:21,027 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:11:21,032 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:11:21,033 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:11:21" (1/1) ... [2023-11-29 05:11:21,034 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f0b3ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:11:21, skipping insertion in model container [2023-11-29 05:11:21,034 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:11:21" (1/1) ... [2023-11-29 05:11:21,069 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:11:21,203 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_4c268339-45ef-4201-99d5-db55f4bcbfcd/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-34.i[915,928] [2023-11-29 05:11:21,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:11:21,288 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:11:21,301 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_4c268339-45ef-4201-99d5-db55f4bcbfcd/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-34.i[915,928] [2023-11-29 05:11:21,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:11:21,357 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:11:21,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:11:21 WrapperNode [2023-11-29 05:11:21,357 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:11:21,358 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:11:21,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:11:21,359 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:11:21,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:11:21" (1/1) ... [2023-11-29 05:11:21,381 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:11:21" (1/1) ... [2023-11-29 05:11:21,426 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 262 [2023-11-29 05:11:21,426 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:11:21,427 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:11:21,427 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:11:21,427 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:11:21,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:11:21" (1/1) ... [2023-11-29 05:11:21,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:11:21" (1/1) ... [2023-11-29 05:11:21,439 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:11:21" (1/1) ... [2023-11-29 05:11:21,462 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 05:11:21,462 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:11:21" (1/1) ... [2023-11-29 05:11:21,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:11:21" (1/1) ... [2023-11-29 05:11:21,477 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:11:21" (1/1) ... [2023-11-29 05:11:21,482 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:11:21" (1/1) ... [2023-11-29 05:11:21,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:11:21" (1/1) ... [2023-11-29 05:11:21,490 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:11:21" (1/1) ... [2023-11-29 05:11:21,496 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:11:21,497 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:11:21,498 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:11:21,498 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:11:21,499 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:11:21" (1/1) ... [2023-11-29 05:11:21,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:11:21,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:11:21,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:11:21,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:11:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:11:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 05:11:21,559 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 05:11:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:11:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:11:21,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:11:21,652 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:11:21,655 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:11:22,082 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:11:22,114 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:11:22,114 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 05:11:22,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:11:22 BoogieIcfgContainer [2023-11-29 05:11:22,115 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:11:22,117 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:11:22,117 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:11:22,120 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:11:22,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:11:21" (1/3) ... [2023-11-29 05:11:22,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a41f83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:11:22, skipping insertion in model container [2023-11-29 05:11:22,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:11:21" (2/3) ... [2023-11-29 05:11:22,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a41f83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:11:22, skipping insertion in model container [2023-11-29 05:11:22,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:11:22" (3/3) ... [2023-11-29 05:11:22,123 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-34.i [2023-11-29 05:11:22,138 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:11:22,138 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:11:22,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:11:22,190 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;@3488b943, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:11:22,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:11:22,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 67 states have internal predecessors, (102), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-29 05:11:22,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-29 05:11:22,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:11:22,213 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:11:22,213 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:11:22,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:11:22,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1796924827, now seen corresponding path program 1 times [2023-11-29 05:11:22,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:11:22,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555165726] [2023-11-29 05:11:22,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:22,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:11:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:11:22,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:11:22,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555165726] [2023-11-29 05:11:22,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 05:11:22,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141819826] [2023-11-29 05:11:22,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:22,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:22,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:11:22,441 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:11:22,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:11:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:11:22,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 05:11:22,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:11:22,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2023-11-29 05:11:22,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:11:22,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141819826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:11:22,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:11:22,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:11:22,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355391058] [2023-11-29 05:11:22,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:11:22,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 05:11:22,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:11:22,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 05:11:22,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:11:22,738 INFO L87 Difference]: Start difference. First operand has 102 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 67 states have internal predecessors, (102), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-29 05:11:22,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:11:22,785 INFO L93 Difference]: Finished difference Result 201 states and 367 transitions. [2023-11-29 05:11:22,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 05:11:22,788 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) Word has length 208 [2023-11-29 05:11:22,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:11:22,797 INFO L225 Difference]: With dead ends: 201 [2023-11-29 05:11:22,797 INFO L226 Difference]: Without dead ends: 100 [2023-11-29 05:11:22,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:11:22,806 INFO L413 NwaCegarLoop]: 160 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, 160 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:11:22,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:11:22,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-29 05:11:22,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-11-29 05:11:22,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 65 states have internal predecessors, (97), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-29 05:11:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 163 transitions. [2023-11-29 05:11:22,865 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 163 transitions. Word has length 208 [2023-11-29 05:11:22,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:11:22,866 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 163 transitions. [2023-11-29 05:11:22,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-29 05:11:22,867 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 163 transitions. [2023-11-29 05:11:22,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-29 05:11:22,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:11:22,891 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:11:22,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:11:23,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 05:11:23,093 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:11:23,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:11:23,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1560672353, now seen corresponding path program 1 times [2023-11-29 05:11:23,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:11:23,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375375692] [2023-11-29 05:11:23,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:23,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:11:23,165 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:11:23,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1556012072] [2023-11-29 05:11:23,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:23,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:23,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:11:23,167 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:11:23,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:11:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:11:23,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:11:23,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:11:23,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:11:23,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:11:23,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:11:23,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375375692] [2023-11-29 05:11:23,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:11:23,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556012072] [2023-11-29 05:11:23,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556012072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:11:23,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:11:23,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:11:23,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191423850] [2023-11-29 05:11:23,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:11:23,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:11:23,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:11:23,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:11:23,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:11:23,728 INFO L87 Difference]: Start difference. First operand 100 states and 163 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:11:24,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:11:24,126 INFO L93 Difference]: Finished difference Result 299 states and 486 transitions. [2023-11-29 05:11:24,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:11:24,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 208 [2023-11-29 05:11:24,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:11:24,133 INFO L225 Difference]: With dead ends: 299 [2023-11-29 05:11:24,133 INFO L226 Difference]: Without dead ends: 200 [2023-11-29 05:11:24,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 204 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 05:11:24,136 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 159 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:11:24,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 595 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:11:24,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-29 05:11:24,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 102. [2023-11-29 05:11:24,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 67 states have internal predecessors, (99), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-29 05:11:24,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 165 transitions. [2023-11-29 05:11:24,163 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 165 transitions. Word has length 208 [2023-11-29 05:11:24,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:11:24,165 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 165 transitions. [2023-11-29 05:11:24,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:11:24,165 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 165 transitions. [2023-11-29 05:11:24,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-29 05:11:24,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:11:24,170 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:11:24,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:11:24,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 05:11:24,373 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:11:24,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:11:24,374 INFO L85 PathProgramCache]: Analyzing trace with hash -225334497, now seen corresponding path program 1 times [2023-11-29 05:11:24,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:11:24,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32995453] [2023-11-29 05:11:24,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:24,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:11:24,424 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:11:24,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263749226] [2023-11-29 05:11:24,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:24,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:24,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:11:24,426 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:11:24,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:11:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:11:24,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:11:24,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:11:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:11:25,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:11:25,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:11:25,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32995453] [2023-11-29 05:11:25,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:11:25,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263749226] [2023-11-29 05:11:25,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263749226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:11:25,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:11:25,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:11:25,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706034073] [2023-11-29 05:11:25,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:11:25,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:11:25,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:11:25,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:11:25,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:11:25,327 INFO L87 Difference]: Start difference. First operand 102 states and 165 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:11:25,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:11:25,392 INFO L93 Difference]: Finished difference Result 333 states and 537 transitions. [2023-11-29 05:11:25,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:11:25,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 209 [2023-11-29 05:11:25,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:11:25,397 INFO L225 Difference]: With dead ends: 333 [2023-11-29 05:11:25,397 INFO L226 Difference]: Without dead ends: 232 [2023-11-29 05:11:25,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 205 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 05:11:25,400 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 163 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:11:25,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 469 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:11:25,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-29 05:11:25,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 203. [2023-11-29 05:11:25,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 134 states have (on average 1.4701492537313432) internal successors, (197), 134 states have internal predecessors, (197), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-29 05:11:25,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 329 transitions. [2023-11-29 05:11:25,441 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 329 transitions. Word has length 209 [2023-11-29 05:11:25,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:11:25,443 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 329 transitions. [2023-11-29 05:11:25,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:11:25,443 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 329 transitions. [2023-11-29 05:11:25,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-29 05:11:25,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:11:25,447 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:11:25,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:11:25,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 05:11:25,647 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:11:25,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:11:25,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1973781639, now seen corresponding path program 1 times [2023-11-29 05:11:25,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:11:25,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91488033] [2023-11-29 05:11:25,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:25,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:11:25,690 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:11:25,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45137664] [2023-11-29 05:11:25,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:25,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:25,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:11:25,692 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:11:25,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:11:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:11:25,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:11:25,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:11:27,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 276 proven. 90 refuted. 0 times theorem prover too weak. 1746 trivial. 0 not checked. [2023-11-29 05:11:27,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:11:28,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:11:28,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91488033] [2023-11-29 05:11:28,463 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:11:28,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45137664] [2023-11-29 05:11:28,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45137664] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:11:28,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:11:28,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-29 05:11:28,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078295488] [2023-11-29 05:11:28,465 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 05:11:28,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:11:28,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:11:28,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:11:28,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:11:28,467 INFO L87 Difference]: Start difference. First operand 203 states and 329 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-29 05:11:29,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:11:29,469 INFO L93 Difference]: Finished difference Result 617 states and 977 transitions. [2023-11-29 05:11:29,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:11:29,470 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 210 [2023-11-29 05:11:29,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:11:29,475 INFO L225 Difference]: With dead ends: 617 [2023-11-29 05:11:29,475 INFO L226 Difference]: Without dead ends: 415 [2023-11-29 05:11:29,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2023-11-29 05:11:29,478 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 364 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:11:29,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 703 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 05:11:29,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-11-29 05:11:29,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 365. [2023-11-29 05:11:29,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 261 states have (on average 1.4597701149425288) internal successors, (381), 261 states have internal predecessors, (381), 99 states have call successors, (99), 4 states have call predecessors, (99), 4 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-29 05:11:29,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 579 transitions. [2023-11-29 05:11:29,553 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 579 transitions. Word has length 210 [2023-11-29 05:11:29,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:11:29,554 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 579 transitions. [2023-11-29 05:11:29,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-29 05:11:29,554 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 579 transitions. [2023-11-29 05:11:29,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-29 05:11:29,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:11:29,557 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:11:29,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:11:29,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:29,758 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:11:29,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:11:29,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1164435013, now seen corresponding path program 1 times [2023-11-29 05:11:29,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:11:29,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771005511] [2023-11-29 05:11:29,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:29,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:11:29,793 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:11:29,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194914705] [2023-11-29 05:11:29,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:29,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:29,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:11:29,795 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:11:29,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:11:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:11:30,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:11:30,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:11:30,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:11:30,307 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:11:30,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:11:30,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771005511] [2023-11-29 05:11:30,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:11:30,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194914705] [2023-11-29 05:11:30,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194914705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:11:30,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:11:30,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:11:30,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113673562] [2023-11-29 05:11:30,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:11:30,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:11:30,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:11:30,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:11:30,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:11:30,311 INFO L87 Difference]: Start difference. First operand 365 states and 579 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:11:30,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:11:30,480 INFO L93 Difference]: Finished difference Result 617 states and 982 transitions. [2023-11-29 05:11:30,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:11:30,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-11-29 05:11:30,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:11:30,484 INFO L225 Difference]: With dead ends: 617 [2023-11-29 05:11:30,484 INFO L226 Difference]: Without dead ends: 347 [2023-11-29 05:11:30,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 207 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 05:11:30,485 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 107 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:11:30,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 466 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:11:30,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-29 05:11:30,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 288. [2023-11-29 05:11:30,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 184 states have (on average 1.4293478260869565) internal successors, (263), 184 states have internal predecessors, (263), 99 states have call successors, (99), 4 states have call predecessors, (99), 4 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-29 05:11:30,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 461 transitions. [2023-11-29 05:11:30,557 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 461 transitions. Word has length 210 [2023-11-29 05:11:30,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:11:30,558 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 461 transitions. [2023-11-29 05:11:30,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:11:30,558 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 461 transitions. [2023-11-29 05:11:30,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-29 05:11:30,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:11:30,562 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:11:30,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:11:30,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:30,763 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:11:30,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:11:30,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1386975625, now seen corresponding path program 1 times [2023-11-29 05:11:30,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:11:30,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649299795] [2023-11-29 05:11:30,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:30,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:11:30,802 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:11:30,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156865360] [2023-11-29 05:11:30,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:30,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:30,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:11:30,804 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:11:30,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:11:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:11:31,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 05:11:31,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:11:32,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 276 proven. 90 refuted. 0 times theorem prover too weak. 1746 trivial. 0 not checked. [2023-11-29 05:11:32,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:11:36,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:11:36,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649299795] [2023-11-29 05:11:36,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:11:36,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156865360] [2023-11-29 05:11:36,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156865360] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:11:36,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:11:36,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-29 05:11:36,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491453161] [2023-11-29 05:11:36,254 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 05:11:36,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:11:36,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:11:36,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:11:36,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:11:36,256 INFO L87 Difference]: Start difference. First operand 288 states and 461 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-29 05:11:37,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:11:37,201 INFO L93 Difference]: Finished difference Result 617 states and 970 transitions. [2023-11-29 05:11:37,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 05:11:37,202 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 210 [2023-11-29 05:11:37,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:11:37,206 INFO L225 Difference]: With dead ends: 617 [2023-11-29 05:11:37,206 INFO L226 Difference]: Without dead ends: 415 [2023-11-29 05:11:37,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=173, Invalid=639, Unknown=0, NotChecked=0, Total=812 [2023-11-29 05:11:37,208 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 237 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:11:37,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 872 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:11:37,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-11-29 05:11:37,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 365. [2023-11-29 05:11:37,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 261 states have (on average 1.4444444444444444) internal successors, (377), 261 states have internal predecessors, (377), 99 states have call successors, (99), 4 states have call predecessors, (99), 4 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-29 05:11:37,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 575 transitions. [2023-11-29 05:11:37,245 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 575 transitions. Word has length 210 [2023-11-29 05:11:37,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:11:37,246 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 575 transitions. [2023-11-29 05:11:37,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-29 05:11:37,246 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 575 transitions. [2023-11-29 05:11:37,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-29 05:11:37,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:11:37,249 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:11:37,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:11:37,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:37,450 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:11:37,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:11:37,451 INFO L85 PathProgramCache]: Analyzing trace with hash -577628999, now seen corresponding path program 1 times [2023-11-29 05:11:37,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:11:37,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604260831] [2023-11-29 05:11:37,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:37,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:11:37,481 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:11:37,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [166831080] [2023-11-29 05:11:37,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:37,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:37,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:11:37,483 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:11:37,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:11:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:11:37,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 05:11:37,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:11:40,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:11:40,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:11:40,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:11:40,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604260831] [2023-11-29 05:11:40,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:11:40,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166831080] [2023-11-29 05:11:40,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166831080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:11:40,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:11:40,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:11:40,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697077427] [2023-11-29 05:11:40,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:11:40,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:11:40,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:11:40,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:11:40,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:11:40,164 INFO L87 Difference]: Start difference. First operand 365 states and 575 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:11:42,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:11:42,116 INFO L93 Difference]: Finished difference Result 1029 states and 1613 transitions. [2023-11-29 05:11:42,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:11:42,116 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-11-29 05:11:42,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:11:42,121 INFO L225 Difference]: With dead ends: 1029 [2023-11-29 05:11:42,121 INFO L226 Difference]: Without dead ends: 827 [2023-11-29 05:11:42,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2023-11-29 05:11:42,124 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 355 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:11:42,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 808 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 05:11:42,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2023-11-29 05:11:42,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 690. [2023-11-29 05:11:42,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 511 states have (on average 1.4344422700587085) internal successors, (733), 512 states have internal predecessors, (733), 170 states have call successors, (170), 8 states have call predecessors, (170), 8 states have return successors, (170), 169 states have call predecessors, (170), 170 states have call successors, (170) [2023-11-29 05:11:42,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1073 transitions. [2023-11-29 05:11:42,191 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1073 transitions. Word has length 210 [2023-11-29 05:11:42,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:11:42,191 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 1073 transitions. [2023-11-29 05:11:42,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:11:42,192 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1073 transitions. [2023-11-29 05:11:42,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-29 05:11:42,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:11:42,194 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:11:42,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:11:42,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:42,395 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:11:42,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:11:42,395 INFO L85 PathProgramCache]: Analyzing trace with hash -520370697, now seen corresponding path program 1 times [2023-11-29 05:11:42,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:11:42,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599255704] [2023-11-29 05:11:42,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:42,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:11:42,428 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:11:42,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1479572509] [2023-11-29 05:11:42,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:42,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:42,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:11:42,429 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:11:42,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:11:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:11:42,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:11:42,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:11:47,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:11:47,221 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:11:47,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:11:47,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599255704] [2023-11-29 05:11:47,222 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:11:47,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479572509] [2023-11-29 05:11:47,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479572509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:11:47,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:11:47,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:11:47,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271356588] [2023-11-29 05:11:47,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:11:47,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:11:47,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:11:47,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:11:47,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:11:47,224 INFO L87 Difference]: Start difference. First operand 690 states and 1073 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:11:52,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:11:52,292 INFO L93 Difference]: Finished difference Result 1276 states and 1996 transitions. [2023-11-29 05:11:52,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:11:52,293 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-11-29 05:11:52,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:11:52,297 INFO L225 Difference]: With dead ends: 1276 [2023-11-29 05:11:52,298 INFO L226 Difference]: Without dead ends: 827 [2023-11-29 05:11:52,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-29 05:11:52,299 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 306 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:11:52,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 876 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 05:11:52,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2023-11-29 05:11:52,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 692. [2023-11-29 05:11:52,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 513 states have (on average 1.432748538011696) internal successors, (735), 514 states have internal predecessors, (735), 170 states have call successors, (170), 8 states have call predecessors, (170), 8 states have return successors, (170), 169 states have call predecessors, (170), 170 states have call successors, (170) [2023-11-29 05:11:52,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1075 transitions. [2023-11-29 05:11:52,376 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1075 transitions. Word has length 210 [2023-11-29 05:11:52,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:11:52,377 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 1075 transitions. [2023-11-29 05:11:52,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:11:52,377 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1075 transitions. [2023-11-29 05:11:52,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-29 05:11:52,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:11:52,379 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:11:52,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:11:52,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:52,580 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:11:52,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:11:52,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1043966952, now seen corresponding path program 1 times [2023-11-29 05:11:52,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:11:52,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503972161] [2023-11-29 05:11:52,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:52,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:11:52,604 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:11:52,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696531034] [2023-11-29 05:11:52,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:52,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:52,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:11:52,605 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:11:52,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:11:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:11:52,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 05:11:52,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:11:54,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 708 proven. 249 refuted. 0 times theorem prover too weak. 1155 trivial. 0 not checked. [2023-11-29 05:11:54,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:11:58,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 24 proven. 72 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-11-29 05:11:58,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:11:58,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503972161] [2023-11-29 05:11:58,434 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:11:58,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696531034] [2023-11-29 05:11:58,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696531034] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:11:58,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:11:58,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2023-11-29 05:11:58,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998047208] [2023-11-29 05:11:58,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:11:58,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 05:11:58,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:11:58,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 05:11:58,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2023-11-29 05:11:58,437 INFO L87 Difference]: Start difference. First operand 692 states and 1075 transitions. Second operand has 24 states, 23 states have (on average 4.434782608695652) internal successors, (102), 24 states have internal predecessors, (102), 6 states have call successors, (66), 4 states have call predecessors, (66), 7 states have return successors, (66), 6 states have call predecessors, (66), 6 states have call successors, (66) [2023-11-29 05:12:06,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:12:06,679 INFO L93 Difference]: Finished difference Result 2999 states and 4588 transitions. [2023-11-29 05:12:06,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-29 05:12:06,680 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.434782608695652) internal successors, (102), 24 states have internal predecessors, (102), 6 states have call successors, (66), 4 states have call predecessors, (66), 7 states have return successors, (66), 6 states have call predecessors, (66), 6 states have call successors, (66) Word has length 210 [2023-11-29 05:12:06,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:12:06,696 INFO L225 Difference]: With dead ends: 2999 [2023-11-29 05:12:06,696 INFO L226 Difference]: Without dead ends: 2753 [2023-11-29 05:12:06,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1916 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1215, Invalid=4485, Unknown=0, NotChecked=0, Total=5700 [2023-11-29 05:12:06,700 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 2270 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2303 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:12:06,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2303 Valid, 1218 Invalid, 2161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-29 05:12:06,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2023-11-29 05:12:07,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 1748. [2023-11-29 05:12:07,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1234 states have (on average 1.4149108589951378) internal successors, (1746), 1242 states have internal predecessors, (1746), 477 states have call successors, (477), 36 states have call predecessors, (477), 36 states have return successors, (477), 469 states have call predecessors, (477), 477 states have call successors, (477) [2023-11-29 05:12:07,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2700 transitions. [2023-11-29 05:12:07,110 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2700 transitions. Word has length 210 [2023-11-29 05:12:07,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:12:07,110 INFO L495 AbstractCegarLoop]: Abstraction has 1748 states and 2700 transitions. [2023-11-29 05:12:07,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.434782608695652) internal successors, (102), 24 states have internal predecessors, (102), 6 states have call successors, (66), 4 states have call predecessors, (66), 7 states have return successors, (66), 6 states have call predecessors, (66), 6 states have call successors, (66) [2023-11-29 05:12:07,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2700 transitions. [2023-11-29 05:12:07,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-29 05:12:07,113 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:12:07,113 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:12:07,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:12:07,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:12:07,314 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:12:07,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:12:07,314 INFO L85 PathProgramCache]: Analyzing trace with hash -836424323, now seen corresponding path program 1 times [2023-11-29 05:12:07,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:12:07,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079093312] [2023-11-29 05:12:07,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:07,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:12:07,338 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:12:07,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252706233] [2023-11-29 05:12:07,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:07,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:12:07,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:12:07,340 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:12:07,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:12:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:07,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 05:12:07,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:12:11,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:12:11,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:12:11,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:12:11,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079093312] [2023-11-29 05:12:11,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:12:11,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252706233] [2023-11-29 05:12:11,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252706233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:12:11,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:12:11,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:12:11,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8174418] [2023-11-29 05:12:11,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:12:11,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:12:11,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:12:11,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:12:11,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:12:11,619 INFO L87 Difference]: Start difference. First operand 1748 states and 2700 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:12:16,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:12:16,399 INFO L93 Difference]: Finished difference Result 2584 states and 4018 transitions. [2023-11-29 05:12:16,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:12:16,399 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-11-29 05:12:16,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:12:16,410 INFO L225 Difference]: With dead ends: 2584 [2023-11-29 05:12:16,410 INFO L226 Difference]: Without dead ends: 2115 [2023-11-29 05:12:16,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2023-11-29 05:12:16,413 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 513 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:12:16,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 1019 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 05:12:16,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2023-11-29 05:12:16,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 1993. [2023-11-29 05:12:16,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1387 states have (on average 1.4116798846431147) internal successors, (1958), 1392 states have internal predecessors, (1958), 563 states have call successors, (563), 42 states have call predecessors, (563), 42 states have return successors, (563), 558 states have call predecessors, (563), 563 states have call successors, (563) [2023-11-29 05:12:16,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3084 transitions. [2023-11-29 05:12:16,805 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3084 transitions. Word has length 210 [2023-11-29 05:12:16,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:12:16,805 INFO L495 AbstractCegarLoop]: Abstraction has 1993 states and 3084 transitions. [2023-11-29 05:12:16,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:12:16,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3084 transitions. [2023-11-29 05:12:16,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-29 05:12:16,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:12:16,807 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:12:16,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 05:12:17,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 05:12:17,007 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:12:17,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:12:17,008 INFO L85 PathProgramCache]: Analyzing trace with hash -779166021, now seen corresponding path program 1 times [2023-11-29 05:12:17,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:12:17,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254613567] [2023-11-29 05:12:17,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:17,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:12:17,031 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:12:17,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [869896478] [2023-11-29 05:12:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:17,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:12:17,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:12:17,033 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:12:17,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 05:12:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:17,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:12:17,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:12:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:12:22,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:12:22,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:12:22,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254613567] [2023-11-29 05:12:22,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:12:22,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869896478] [2023-11-29 05:12:22,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869896478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:12:22,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:12:22,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:12:22,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087416877] [2023-11-29 05:12:22,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:12:22,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:12:22,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:12:22,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:12:22,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:12:22,380 INFO L87 Difference]: Start difference. First operand 1993 states and 3084 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:12:33,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:12:33,804 INFO L93 Difference]: Finished difference Result 2684 states and 4164 transitions. [2023-11-29 05:12:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:12:33,804 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-11-29 05:12:33,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:12:33,818 INFO L225 Difference]: With dead ends: 2684 [2023-11-29 05:12:33,818 INFO L226 Difference]: Without dead ends: 2115 [2023-11-29 05:12:33,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-29 05:12:33,822 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 442 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:12:33,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 1380 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-11-29 05:12:33,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2023-11-29 05:12:34,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 2003. [2023-11-29 05:12:34,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 1397 states have (on average 1.41159627773801) internal successors, (1972), 1402 states have internal predecessors, (1972), 563 states have call successors, (563), 42 states have call predecessors, (563), 42 states have return successors, (563), 558 states have call predecessors, (563), 563 states have call successors, (563) [2023-11-29 05:12:34,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 3098 transitions. [2023-11-29 05:12:34,296 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 3098 transitions. Word has length 210 [2023-11-29 05:12:34,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:12:34,296 INFO L495 AbstractCegarLoop]: Abstraction has 2003 states and 3098 transitions. [2023-11-29 05:12:34,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:12:34,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 3098 transitions. [2023-11-29 05:12:34,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-29 05:12:34,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:12:34,298 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:12:34,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 05:12:34,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 05:12:34,499 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:12:34,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:12:34,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1765376786, now seen corresponding path program 1 times [2023-11-29 05:12:34,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:12:34,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803486276] [2023-11-29 05:12:34,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:34,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:12:34,521 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:12:34,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1335008698] [2023-11-29 05:12:34,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:34,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:12:34,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:12:34,523 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:12:34,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 05:12:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:34,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:12:34,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:12:34,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:12:34,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:12:34,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:12:34,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803486276] [2023-11-29 05:12:34,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:12:34,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335008698] [2023-11-29 05:12:34,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335008698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:12:34,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:12:34,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:12:34,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477831054] [2023-11-29 05:12:34,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:12:34,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:12:34,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:12:34,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:12:34,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:12:34,671 INFO L87 Difference]: Start difference. First operand 2003 states and 3098 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:12:34,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:12:34,979 INFO L93 Difference]: Finished difference Result 2719 states and 4231 transitions. [2023-11-29 05:12:34,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:12:34,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-11-29 05:12:34,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:12:34,992 INFO L225 Difference]: With dead ends: 2719 [2023-11-29 05:12:34,992 INFO L226 Difference]: Without dead ends: 2003 [2023-11-29 05:12:34,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:12:34,995 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 11 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:12:34,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 301 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:12:34,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2023-11-29 05:12:35,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 2003. [2023-11-29 05:12:35,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 1397 states have (on average 1.4058697208303508) internal successors, (1964), 1402 states have internal predecessors, (1964), 563 states have call successors, (563), 42 states have call predecessors, (563), 42 states have return successors, (563), 558 states have call predecessors, (563), 563 states have call successors, (563) [2023-11-29 05:12:35,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 3090 transitions. [2023-11-29 05:12:35,531 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 3090 transitions. Word has length 211 [2023-11-29 05:12:35,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:12:35,531 INFO L495 AbstractCegarLoop]: Abstraction has 2003 states and 3090 transitions. [2023-11-29 05:12:35,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:12:35,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 3090 transitions. [2023-11-29 05:12:35,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-29 05:12:35,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:12:35,534 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:12:35,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 05:12:35,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 05:12:35,735 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:12:35,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:12:35,735 INFO L85 PathProgramCache]: Analyzing trace with hash -2136563500, now seen corresponding path program 1 times [2023-11-29 05:12:35,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:12:35,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248131926] [2023-11-29 05:12:35,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:35,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:12:35,759 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:12:35,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2014140369] [2023-11-29 05:12:35,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:35,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:12:35,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:12:35,761 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:12:35,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 05:12:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:36,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 05:12:36,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:12:37,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:12:37,413 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:12:37,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:12:37,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248131926] [2023-11-29 05:12:37,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:12:37,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014140369] [2023-11-29 05:12:37,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014140369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:12:37,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:12:37,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:12:37,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602573074] [2023-11-29 05:12:37,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:12:37,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:12:37,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:12:37,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:12:37,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:12:37,415 INFO L87 Difference]: Start difference. First operand 2003 states and 3090 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:12:38,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:12:38,471 INFO L93 Difference]: Finished difference Result 3013 states and 4611 transitions. [2023-11-29 05:12:38,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:12:38,472 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-11-29 05:12:38,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:12:38,494 INFO L225 Difference]: With dead ends: 3013 [2023-11-29 05:12:38,495 INFO L226 Difference]: Without dead ends: 2523 [2023-11-29 05:12:38,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 204 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 05:12:38,496 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 150 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:12:38,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 878 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:12:38,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2523 states. [2023-11-29 05:12:38,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2523 to 2225. [2023-11-29 05:12:38,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 1591 states have (on average 1.399120050282841) internal successors, (2226), 1600 states have internal predecessors, (2226), 583 states have call successors, (583), 50 states have call predecessors, (583), 50 states have return successors, (583), 574 states have call predecessors, (583), 583 states have call successors, (583) [2023-11-29 05:12:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3392 transitions. [2023-11-29 05:12:38,881 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3392 transitions. Word has length 211 [2023-11-29 05:12:38,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:12:38,882 INFO L495 AbstractCegarLoop]: Abstraction has 2225 states and 3392 transitions. [2023-11-29 05:12:38,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:12:38,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3392 transitions. [2023-11-29 05:12:38,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-29 05:12:38,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:12:38,884 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:12:38,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 05:12:39,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:12:39,085 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:12:39,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:12:39,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2079305198, now seen corresponding path program 1 times [2023-11-29 05:12:39,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:12:39,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115927442] [2023-11-29 05:12:39,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:39,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:12:39,110 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:12:39,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367102883] [2023-11-29 05:12:39,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:39,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:12:39,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:12:39,111 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:12:39,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 05:12:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:39,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:12:39,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:12:40,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:12:40,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:12:40,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:12:40,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115927442] [2023-11-29 05:12:40,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:12:40,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367102883] [2023-11-29 05:12:40,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367102883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:12:40,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:12:40,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:12:40,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044394812] [2023-11-29 05:12:40,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:12:40,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:12:40,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:12:40,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:12:40,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:12:40,868 INFO L87 Difference]: Start difference. First operand 2225 states and 3392 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:12:43,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:12:43,075 INFO L93 Difference]: Finished difference Result 3926 states and 5988 transitions. [2023-11-29 05:12:43,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 05:12:43,076 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-11-29 05:12:43,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:12:43,097 INFO L225 Difference]: With dead ends: 3926 [2023-11-29 05:12:43,097 INFO L226 Difference]: Without dead ends: 3300 [2023-11-29 05:12:43,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-11-29 05:12:43,101 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 511 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:12:43,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1124 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 05:12:43,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2023-11-29 05:12:43,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 2920. [2023-11-29 05:12:43,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2085 states have (on average 1.4081534772182254) internal successors, (2936), 2097 states have internal predecessors, (2936), 767 states have call successors, (767), 67 states have call predecessors, (767), 67 states have return successors, (767), 755 states have call predecessors, (767), 767 states have call successors, (767) [2023-11-29 05:12:43,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4470 transitions. [2023-11-29 05:12:43,799 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4470 transitions. Word has length 211 [2023-11-29 05:12:43,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:12:43,799 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4470 transitions. [2023-11-29 05:12:43,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:12:43,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4470 transitions. [2023-11-29 05:12:43,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-29 05:12:43,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:12:43,803 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:12:43,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 05:12:44,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:12:44,004 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:12:44,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:12:44,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1569283952, now seen corresponding path program 1 times [2023-11-29 05:12:44,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:12:44,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325747073] [2023-11-29 05:12:44,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:44,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:12:44,032 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:12:44,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074114911] [2023-11-29 05:12:44,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:44,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:12:44,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:12:44,034 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:12:44,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 05:12:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:44,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 05:12:44,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:12:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:12:45,558 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:12:45,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:12:45,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325747073] [2023-11-29 05:12:45,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:12:45,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074114911] [2023-11-29 05:12:45,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074114911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:12:45,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:12:45,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:12:45,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31605188] [2023-11-29 05:12:45,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:12:45,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:12:45,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:12:45,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:12:45,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:12:45,561 INFO L87 Difference]: Start difference. First operand 2920 states and 4470 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:12:46,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:12:46,763 INFO L93 Difference]: Finished difference Result 3945 states and 6060 transitions. [2023-11-29 05:12:46,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:12:46,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-11-29 05:12:46,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:12:46,781 INFO L225 Difference]: With dead ends: 3945 [2023-11-29 05:12:46,781 INFO L226 Difference]: Without dead ends: 3379 [2023-11-29 05:12:46,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 204 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 05:12:46,784 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 250 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:12:46,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 976 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:12:46,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3379 states. [2023-11-29 05:12:47,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3379 to 3192. [2023-11-29 05:12:47,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 2262 states have (on average 1.407603890362511) internal successors, (3184), 2271 states have internal predecessors, (3184), 855 states have call successors, (855), 74 states have call predecessors, (855), 74 states have return successors, (855), 846 states have call predecessors, (855), 855 states have call successors, (855) [2023-11-29 05:12:47,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 4894 transitions. [2023-11-29 05:12:47,325 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 4894 transitions. Word has length 211 [2023-11-29 05:12:47,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:12:47,326 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 4894 transitions. [2023-11-29 05:12:47,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:12:47,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 4894 transitions. [2023-11-29 05:12:47,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-29 05:12:47,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:12:47,329 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:12:47,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 05:12:47,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 05:12:47,530 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:12:47,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:12:47,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1512025650, now seen corresponding path program 1 times [2023-11-29 05:12:47,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:12:47,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746635292] [2023-11-29 05:12:47,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:47,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:12:47,555 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:12:47,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1702692234] [2023-11-29 05:12:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:47,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:12:47,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:12:47,557 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:12:47,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 05:12:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:47,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:12:47,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:12:49,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:12:49,350 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:12:49,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:12:49,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746635292] [2023-11-29 05:12:49,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:12:49,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702692234] [2023-11-29 05:12:49,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702692234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:12:49,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:12:49,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:12:49,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838974485] [2023-11-29 05:12:49,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:12:49,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:12:49,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:12:49,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:12:49,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:12:49,352 INFO L87 Difference]: Start difference. First operand 3192 states and 4894 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:12:51,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:12:51,693 INFO L93 Difference]: Finished difference Result 4447 states and 6818 transitions. [2023-11-29 05:12:51,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 05:12:51,694 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-11-29 05:12:51,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:12:51,716 INFO L225 Difference]: With dead ends: 4447 [2023-11-29 05:12:51,716 INFO L226 Difference]: Without dead ends: 4007 [2023-11-29 05:12:51,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-11-29 05:12:51,719 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 487 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:12:51,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 1377 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 05:12:51,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4007 states. [2023-11-29 05:12:52,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4007 to 3615. [2023-11-29 05:12:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3615 states, 2563 states have (on average 1.4143581740148263) internal successors, (3625), 2574 states have internal predecessors, (3625), 968 states have call successors, (968), 83 states have call predecessors, (968), 83 states have return successors, (968), 957 states have call predecessors, (968), 968 states have call successors, (968) [2023-11-29 05:12:52,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3615 states to 3615 states and 5561 transitions. [2023-11-29 05:12:52,280 INFO L78 Accepts]: Start accepts. Automaton has 3615 states and 5561 transitions. Word has length 211 [2023-11-29 05:12:52,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:12:52,280 INFO L495 AbstractCegarLoop]: Abstraction has 3615 states and 5561 transitions. [2023-11-29 05:12:52,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:12:52,280 INFO L276 IsEmpty]: Start isEmpty. Operand 3615 states and 5561 transitions. [2023-11-29 05:12:52,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-29 05:12:52,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:12:52,283 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:12:52,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 05:12:52,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 05:12:52,484 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:12:52,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:12:52,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1406951612, now seen corresponding path program 1 times [2023-11-29 05:12:52,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:12:52,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967674296] [2023-11-29 05:12:52,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:52,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:12:52,506 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:12:52,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237770877] [2023-11-29 05:12:52,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:52,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:12:52,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:12:52,507 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:12:52,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 05:12:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:52,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:12:52,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:12:54,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:12:54,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:12:54,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:12:54,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967674296] [2023-11-29 05:12:54,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:12:54,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237770877] [2023-11-29 05:12:54,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237770877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:12:54,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:12:54,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:12:54,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370808188] [2023-11-29 05:12:54,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:12:54,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:12:54,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:12:54,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:12:54,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:12:54,359 INFO L87 Difference]: Start difference. First operand 3615 states and 5561 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:12:57,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:12:57,132 INFO L93 Difference]: Finished difference Result 5784 states and 8903 transitions. [2023-11-29 05:12:57,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:12:57,133 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-11-29 05:12:57,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:12:57,155 INFO L225 Difference]: With dead ends: 5784 [2023-11-29 05:12:57,155 INFO L226 Difference]: Without dead ends: 3615 [2023-11-29 05:12:57,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:12:57,159 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 282 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:12:57,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 817 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 05:12:57,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3615 states. [2023-11-29 05:12:57,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3615 to 3609. [2023-11-29 05:12:57,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 2557 states have (on average 1.4106374657802112) internal successors, (3607), 2568 states have internal predecessors, (3607), 968 states have call successors, (968), 83 states have call predecessors, (968), 83 states have return successors, (968), 957 states have call predecessors, (968), 968 states have call successors, (968) [2023-11-29 05:12:57,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 5543 transitions. [2023-11-29 05:12:57,726 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 5543 transitions. Word has length 211 [2023-11-29 05:12:57,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:12:57,727 INFO L495 AbstractCegarLoop]: Abstraction has 3609 states and 5543 transitions. [2023-11-29 05:12:57,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:12:57,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 5543 transitions. [2023-11-29 05:12:57,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-29 05:12:57,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:12:57,729 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:12:57,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 05:12:57,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 05:12:57,930 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:12:57,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:12:57,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1464209914, now seen corresponding path program 1 times [2023-11-29 05:12:57,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:12:57,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182256756] [2023-11-29 05:12:57,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:57,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:12:57,958 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:12:57,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [671394507] [2023-11-29 05:12:57,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:57,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:12:57,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:12:57,959 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:12:57,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 05:12:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:58,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:12:58,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:13:05,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:13:05,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:13:05,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:13:05,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182256756] [2023-11-29 05:13:05,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:13:05,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671394507] [2023-11-29 05:13:05,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671394507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:13:05,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:13:05,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:13:05,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090664943] [2023-11-29 05:13:05,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:13:05,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:13:05,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:13:05,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:13:05,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:13:05,152 INFO L87 Difference]: Start difference. First operand 3609 states and 5543 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:13:11,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:13:11,907 INFO L93 Difference]: Finished difference Result 5843 states and 8974 transitions. [2023-11-29 05:13:11,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:13:11,908 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-11-29 05:13:11,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:13:11,919 INFO L225 Difference]: With dead ends: 5843 [2023-11-29 05:13:11,919 INFO L226 Difference]: Without dead ends: 3799 [2023-11-29 05:13:11,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-29 05:13:11,925 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 251 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:13:11,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 939 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 05:13:11,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3799 states. [2023-11-29 05:13:12,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3799 to 3617. [2023-11-29 05:13:12,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3617 states, 2565 states have (on average 1.4101364522417155) internal successors, (3617), 2576 states have internal predecessors, (3617), 968 states have call successors, (968), 83 states have call predecessors, (968), 83 states have return successors, (968), 957 states have call predecessors, (968), 968 states have call successors, (968) [2023-11-29 05:13:12,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3617 states to 3617 states and 5553 transitions. [2023-11-29 05:13:12,473 INFO L78 Accepts]: Start accepts. Automaton has 3617 states and 5553 transitions. Word has length 211 [2023-11-29 05:13:12,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:13:12,473 INFO L495 AbstractCegarLoop]: Abstraction has 3617 states and 5553 transitions. [2023-11-29 05:13:12,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:13:12,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3617 states and 5553 transitions. [2023-11-29 05:13:12,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-29 05:13:12,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:13:12,475 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:13:12,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-29 05:13:12,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 05:13:12,676 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:13:12,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:13:12,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1205414590, now seen corresponding path program 1 times [2023-11-29 05:13:12,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:13:12,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168762746] [2023-11-29 05:13:12,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:12,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:13:12,692 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:13:12,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2123800127] [2023-11-29 05:13:12,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:12,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:13:12,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:13:12,693 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:13:12,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 05:13:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:12,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:13:12,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:13:20,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:13:20,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:13:20,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:13:20,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168762746] [2023-11-29 05:13:20,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:13:20,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123800127] [2023-11-29 05:13:20,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123800127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:13:20,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:13:20,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:13:20,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818080156] [2023-11-29 05:13:20,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:13:20,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:13:20,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:13:20,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:13:20,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:13:20,109 INFO L87 Difference]: Start difference. First operand 3617 states and 5553 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:13:35,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:13:35,450 INFO L93 Difference]: Finished difference Result 5133 states and 7899 transitions. [2023-11-29 05:13:35,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:13:35,450 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-11-29 05:13:35,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:13:35,459 INFO L225 Difference]: With dead ends: 5133 [2023-11-29 05:13:35,459 INFO L226 Difference]: Without dead ends: 3729 [2023-11-29 05:13:35,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-29 05:13:35,464 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 364 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:13:35,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 1654 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2023-11-29 05:13:35,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2023-11-29 05:13:36,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 3621. [2023-11-29 05:13:36,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3621 states, 2569 states have (on average 1.4098871156091866) internal successors, (3622), 2580 states have internal predecessors, (3622), 968 states have call successors, (968), 83 states have call predecessors, (968), 83 states have return successors, (968), 957 states have call predecessors, (968), 968 states have call successors, (968) [2023-11-29 05:13:36,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 5558 transitions. [2023-11-29 05:13:36,019 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 5558 transitions. Word has length 211 [2023-11-29 05:13:36,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:13:36,019 INFO L495 AbstractCegarLoop]: Abstraction has 3621 states and 5558 transitions. [2023-11-29 05:13:36,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:13:36,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 5558 transitions. [2023-11-29 05:13:36,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-29 05:13:36,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:13:36,022 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:13:36,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 05:13:36,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:13:36,222 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:13:36,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:13:36,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1933817678, now seen corresponding path program 1 times [2023-11-29 05:13:36,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:13:36,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929317099] [2023-11-29 05:13:36,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:36,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:13:36,244 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:13:36,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084359476] [2023-11-29 05:13:36,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:36,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:13:36,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:13:36,245 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:13:36,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 05:13:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:36,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 05:13:36,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:13:36,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 878 proven. 69 refuted. 0 times theorem prover too weak. 1165 trivial. 0 not checked. [2023-11-29 05:13:36,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:13:37,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 27 proven. 69 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-11-29 05:13:37,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:13:37,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929317099] [2023-11-29 05:13:37,105 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:13:37,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084359476] [2023-11-29 05:13:37,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084359476] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:13:37,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:13:37,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-11-29 05:13:37,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333324544] [2023-11-29 05:13:37,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:13:37,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:13:37,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:13:37,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:13:37,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:13:37,107 INFO L87 Difference]: Start difference. First operand 3621 states and 5558 transitions. Second operand has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 18 states have internal predecessors, (101), 4 states have call successors, (66), 3 states have call predecessors, (66), 5 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2023-11-29 05:13:39,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:13:39,992 INFO L93 Difference]: Finished difference Result 7142 states and 10723 transitions. [2023-11-29 05:13:39,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-29 05:13:39,992 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 18 states have internal predecessors, (101), 4 states have call successors, (66), 3 states have call predecessors, (66), 5 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) Word has length 212 [2023-11-29 05:13:39,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:13:40,002 INFO L225 Difference]: With dead ends: 7142 [2023-11-29 05:13:40,002 INFO L226 Difference]: Without dead ends: 5192 [2023-11-29 05:13:40,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=742, Invalid=2680, Unknown=0, NotChecked=0, Total=3422 [2023-11-29 05:13:40,007 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 1923 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 1471 mSolverCounterSat, 1147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1948 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 2618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1147 IncrementalHoareTripleChecker+Valid, 1471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:13:40,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1948 Valid, 1824 Invalid, 2618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1147 Valid, 1471 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 05:13:40,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5192 states. [2023-11-29 05:13:40,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5192 to 4104. [2023-11-29 05:13:40,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4104 states, 2942 states have (on average 1.3803535010197145) internal successors, (4061), 2965 states have internal predecessors, (4061), 1037 states have call successors, (1037), 124 states have call predecessors, (1037), 124 states have return successors, (1037), 1014 states have call predecessors, (1037), 1037 states have call successors, (1037) [2023-11-29 05:13:40,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4104 states to 4104 states and 6135 transitions. [2023-11-29 05:13:40,578 INFO L78 Accepts]: Start accepts. Automaton has 4104 states and 6135 transitions. Word has length 212 [2023-11-29 05:13:40,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:13:40,579 INFO L495 AbstractCegarLoop]: Abstraction has 4104 states and 6135 transitions. [2023-11-29 05:13:40,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 18 states have internal predecessors, (101), 4 states have call successors, (66), 3 states have call predecessors, (66), 5 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2023-11-29 05:13:40,579 INFO L276 IsEmpty]: Start isEmpty. Operand 4104 states and 6135 transitions. [2023-11-29 05:13:40,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-29 05:13:40,581 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:13:40,581 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:13:40,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 05:13:40,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:13:40,782 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:13:40,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:13:40,782 INFO L85 PathProgramCache]: Analyzing trace with hash -177242951, now seen corresponding path program 1 times [2023-11-29 05:13:40,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:13:40,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389985570] [2023-11-29 05:13:40,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:40,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:13:40,802 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:13:40,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776443489] [2023-11-29 05:13:40,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:40,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:13:40,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:13:40,804 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:13:40,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c268339-45ef-4201-99d5-db55f4bcbfcd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 05:13:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:40,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 05:13:40,961 INFO L285 TraceCheckSpWp]: Computing forward predicates...