./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-21.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_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/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_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/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_79753863-e847-4221-be11-c2e86cc44756/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 4e26c4f9f4bd36e827f5cc020962f05d0934fda94760f725a49c7754f36caf1f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:02:23,936 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:02:23,998 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:02:24,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:02:24,003 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:02:24,025 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:02:24,026 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:02:24,026 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:02:24,027 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:02:24,028 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:02:24,028 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:02:24,029 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:02:24,029 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:02:24,030 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:02:24,030 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:02:24,031 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:02:24,031 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:02:24,032 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:02:24,032 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:02:24,033 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:02:24,033 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:02:24,034 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:02:24,034 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:02:24,035 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:02:24,035 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:02:24,036 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:02:24,036 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:02:24,036 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:02:24,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:02:24,037 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:02:24,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:02:24,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:02:24,038 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:02:24,039 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:02:24,039 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:02:24,039 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:02:24,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:02:24,039 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:02:24,039 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:02:24,040 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:02:24,040 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:02:24,040 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:02:24,040 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_79753863-e847-4221-be11-c2e86cc44756/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e26c4f9f4bd36e827f5cc020962f05d0934fda94760f725a49c7754f36caf1f [2023-11-29 05:02:24,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:02:24,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:02:24,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:02:24,263 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:02:24,264 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:02:24,265 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-21.i [2023-11-29 05:02:27,045 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:02:27,267 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:02:27,268 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-21.i [2023-11-29 05:02:27,283 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/data/0536ed735/a0dea2948fe144658d15d6ef1496f344/FLAGae6d9d80d [2023-11-29 05:02:27,298 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/data/0536ed735/a0dea2948fe144658d15d6ef1496f344 [2023-11-29 05:02:27,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:02:27,302 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:02:27,303 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:02:27,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:02:27,309 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:02:27,310 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:02:27" (1/1) ... [2023-11-29 05:02:27,311 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ae6817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:02:27, skipping insertion in model container [2023-11-29 05:02:27,311 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:02:27" (1/1) ... [2023-11-29 05:02:27,371 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:02:27,522 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_79753863-e847-4221-be11-c2e86cc44756/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-21.i[916,929] [2023-11-29 05:02:27,677 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:02:27,694 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:02:27,706 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_79753863-e847-4221-be11-c2e86cc44756/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-21.i[916,929] [2023-11-29 05:02:27,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:02:27,803 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:02:27,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:02:27 WrapperNode [2023-11-29 05:02:27,803 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:02:27,804 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:02:27,805 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:02:27,805 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:02:27,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:02:27" (1/1) ... [2023-11-29 05:02:27,837 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:02:27" (1/1) ... [2023-11-29 05:02:27,914 INFO L138 Inliner]: procedures = 26, calls = 117, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 862 [2023-11-29 05:02:27,914 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:02:27,915 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:02:27,915 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:02:27,915 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:02:27,927 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:02:27" (1/1) ... [2023-11-29 05:02:27,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:02:27" (1/1) ... [2023-11-29 05:02:27,940 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:02:27" (1/1) ... [2023-11-29 05:02:28,025 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 05:02:28,026 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:02:27" (1/1) ... [2023-11-29 05:02:28,026 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:02:27" (1/1) ... [2023-11-29 05:02:28,054 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:02:27" (1/1) ... [2023-11-29 05:02:28,063 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:02:27" (1/1) ... [2023-11-29 05:02:28,070 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:02:27" (1/1) ... [2023-11-29 05:02:28,078 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:02:27" (1/1) ... [2023-11-29 05:02:28,088 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:02:28,089 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:02:28,089 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:02:28,089 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:02:28,090 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:02:27" (1/1) ... [2023-11-29 05:02:28,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:02:28,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:28,120 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:02:28,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:02:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:02:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 05:02:28,157 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 05:02:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:02:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:02:28,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:02:28,307 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:02:28,309 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:02:29,245 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:02:29,301 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:02:29,301 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 05:02:29,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:02:29 BoogieIcfgContainer [2023-11-29 05:02:29,302 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:02:29,304 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:02:29,304 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:02:29,307 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:02:29,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:02:27" (1/3) ... [2023-11-29 05:02:29,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82a8a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:02:29, skipping insertion in model container [2023-11-29 05:02:29,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:02:27" (2/3) ... [2023-11-29 05:02:29,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82a8a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:02:29, skipping insertion in model container [2023-11-29 05:02:29,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:02:29" (3/3) ... [2023-11-29 05:02:29,310 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-21.i [2023-11-29 05:02:29,325 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:02:29,325 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:02:29,378 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:02:29,383 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;@2cc0e673, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:02:29,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:02:29,390 INFO L276 IsEmpty]: Start isEmpty. Operand has 325 states, 218 states have (on average 1.6605504587155964) internal successors, (362), 219 states have internal predecessors, (362), 104 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2023-11-29 05:02:29,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-11-29 05:02:29,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:29,429 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:29,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:29,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:29,435 INFO L85 PathProgramCache]: Analyzing trace with hash 335338095, now seen corresponding path program 1 times [2023-11-29 05:02:29,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:29,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036037421] [2023-11-29 05:02:29,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:29,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:29,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:29,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036037421] [2023-11-29 05:02:29,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 05:02:29,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670626409] [2023-11-29 05:02:29,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:29,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:29,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:29,812 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:29,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:02:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:30,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 1533 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 05:02:30,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 21218 trivial. 0 not checked. [2023-11-29 05:02:30,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:02:30,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670626409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:30,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:30,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:02:30,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268479860] [2023-11-29 05:02:30,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:30,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 05:02:30,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:30,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 05:02:30,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:02:30,420 INFO L87 Difference]: Start difference. First operand has 325 states, 218 states have (on average 1.6605504587155964) internal successors, (362), 219 states have internal predecessors, (362), 104 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 2 states have call successors, (104) [2023-11-29 05:02:30,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:30,505 INFO L93 Difference]: Finished difference Result 647 states and 1242 transitions. [2023-11-29 05:02:30,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 05:02:30,508 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 2 states have call successors, (104) Word has length 665 [2023-11-29 05:02:30,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:30,519 INFO L225 Difference]: With dead ends: 647 [2023-11-29 05:02:30,519 INFO L226 Difference]: Without dead ends: 323 [2023-11-29 05:02:30,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 664 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 05:02:30,531 INFO L413 NwaCegarLoop]: 562 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, 562 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 05:02:30,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 562 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:02:30,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-11-29 05:02:30,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2023-11-29 05:02:30,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 217 states have (on average 1.6451612903225807) internal successors, (357), 217 states have internal predecessors, (357), 104 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2023-11-29 05:02:30,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 565 transitions. [2023-11-29 05:02:30,615 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 565 transitions. Word has length 665 [2023-11-29 05:02:30,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:30,616 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 565 transitions. [2023-11-29 05:02:30,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 2 states have call successors, (104) [2023-11-29 05:02:30,616 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 565 transitions. [2023-11-29 05:02:30,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-11-29 05:02:30,632 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:30,632 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:30,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:02:30,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:30,833 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:30,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:30,834 INFO L85 PathProgramCache]: Analyzing trace with hash 742405155, now seen corresponding path program 1 times [2023-11-29 05:02:30,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:30,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188016220] [2023-11-29 05:02:30,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:30,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:30,956 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:30,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596597612] [2023-11-29 05:02:30,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:30,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:30,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:30,958 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:30,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:02:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:31,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 1533 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:02:31,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:32,281 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:02:32,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:02:32,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:32,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188016220] [2023-11-29 05:02:32,282 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:02:32,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596597612] [2023-11-29 05:02:32,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596597612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:32,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:32,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:02:32,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197002234] [2023-11-29 05:02:32,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:32,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:02:32,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:32,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:02:32,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:02:32,287 INFO L87 Difference]: Start difference. First operand 323 states and 565 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:32,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:32,647 INFO L93 Difference]: Finished difference Result 1163 states and 2043 transitions. [2023-11-29 05:02:32,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:02:32,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 665 [2023-11-29 05:02:32,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:32,660 INFO L225 Difference]: With dead ends: 1163 [2023-11-29 05:02:32,660 INFO L226 Difference]: Without dead ends: 841 [2023-11-29 05:02:32,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 662 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 05:02:32,664 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 815 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:32,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 1934 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:02:32,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2023-11-29 05:02:32,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 836. [2023-11-29 05:02:32,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 588 states have (on average 1.6751700680272108) internal successors, (985), 589 states have internal predecessors, (985), 244 states have call successors, (244), 3 states have call predecessors, (244), 3 states have return successors, (244), 243 states have call predecessors, (244), 244 states have call successors, (244) [2023-11-29 05:02:32,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1473 transitions. [2023-11-29 05:02:32,800 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1473 transitions. Word has length 665 [2023-11-29 05:02:32,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:32,802 INFO L495 AbstractCegarLoop]: Abstraction has 836 states and 1473 transitions. [2023-11-29 05:02:32,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:32,803 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1473 transitions. [2023-11-29 05:02:32,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-11-29 05:02:32,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:32,812 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:32,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:02:33,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:33,013 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:33,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:33,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1581438817, now seen corresponding path program 1 times [2023-11-29 05:02:33,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:33,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682940858] [2023-11-29 05:02:33,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:33,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:33,085 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:33,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017218056] [2023-11-29 05:02:33,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:33,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:33,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:33,087 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:33,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:02:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:33,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 1531 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:02:33,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:33,585 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:02:33,585 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:02:33,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:33,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682940858] [2023-11-29 05:02:33,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:02:33,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017218056] [2023-11-29 05:02:33,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017218056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:33,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:33,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:02:33,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122195716] [2023-11-29 05:02:33,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:33,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:02:33,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:33,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:02:33,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:02:33,589 INFO L87 Difference]: Start difference. First operand 836 states and 1473 transitions. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:34,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:34,191 INFO L93 Difference]: Finished difference Result 2778 states and 4926 transitions. [2023-11-29 05:02:34,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:02:34,193 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 665 [2023-11-29 05:02:34,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:34,211 INFO L225 Difference]: With dead ends: 2778 [2023-11-29 05:02:34,211 INFO L226 Difference]: Without dead ends: 1943 [2023-11-29 05:02:34,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 661 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:02:34,216 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 617 mSDsluCounter, 2657 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 3559 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:34,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 3559 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:02:34,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2023-11-29 05:02:34,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1933. [2023-11-29 05:02:34,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1484 states have (on average 1.7243935309973046) internal successors, (2559), 1491 states have internal predecessors, (2559), 439 states have call successors, (439), 9 states have call predecessors, (439), 9 states have return successors, (439), 432 states have call predecessors, (439), 439 states have call successors, (439) [2023-11-29 05:02:34,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 3437 transitions. [2023-11-29 05:02:34,441 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 3437 transitions. Word has length 665 [2023-11-29 05:02:34,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:34,443 INFO L495 AbstractCegarLoop]: Abstraction has 1933 states and 3437 transitions. [2023-11-29 05:02:34,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:34,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 3437 transitions. [2023-11-29 05:02:34,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-11-29 05:02:34,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:34,453 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:34,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:02:34,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:34,654 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:34,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:34,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1658339615, now seen corresponding path program 1 times [2023-11-29 05:02:34,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:34,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242818099] [2023-11-29 05:02:34,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:34,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:34,730 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:34,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699920268] [2023-11-29 05:02:34,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:34,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:34,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:34,732 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:34,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:02:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:35,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 1531 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:02:35,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:02:35,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:02:35,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:35,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242818099] [2023-11-29 05:02:35,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:02:35,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699920268] [2023-11-29 05:02:35,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699920268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:35,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:35,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:02:35,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764624424] [2023-11-29 05:02:35,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:35,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:02:35,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:35,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:02:35,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:02:35,127 INFO L87 Difference]: Start difference. First operand 1933 states and 3437 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:35,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:35,266 INFO L93 Difference]: Finished difference Result 4904 states and 8728 transitions. [2023-11-29 05:02:35,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:02:35,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 665 [2023-11-29 05:02:35,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:35,285 INFO L225 Difference]: With dead ends: 4904 [2023-11-29 05:02:35,285 INFO L226 Difference]: Without dead ends: 2972 [2023-11-29 05:02:35,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 663 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 05:02:35,291 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 305 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:35,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1325 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:02:35,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2023-11-29 05:02:35,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2507. [2023-11-29 05:02:35,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 1962 states have (on average 1.7339449541284404) internal successors, (3402), 1972 states have internal predecessors, (3402), 532 states have call successors, (532), 12 states have call predecessors, (532), 12 states have return successors, (532), 522 states have call predecessors, (532), 532 states have call successors, (532) [2023-11-29 05:02:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 4466 transitions. [2023-11-29 05:02:35,483 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 4466 transitions. Word has length 665 [2023-11-29 05:02:35,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:35,484 INFO L495 AbstractCegarLoop]: Abstraction has 2507 states and 4466 transitions. [2023-11-29 05:02:35,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:35,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 4466 transitions. [2023-11-29 05:02:35,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-11-29 05:02:35,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:35,492 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:35,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:02:35,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:35,693 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:35,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:35,694 INFO L85 PathProgramCache]: Analyzing trace with hash 523600739, now seen corresponding path program 1 times [2023-11-29 05:02:35,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:35,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648247549] [2023-11-29 05:02:35,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:35,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:35,770 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:35,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1149864994] [2023-11-29 05:02:35,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:35,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:35,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:35,772 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:35,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:02:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:36,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:02:36,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:36,993 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:02:36,993 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:02:36,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:36,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648247549] [2023-11-29 05:02:36,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:02:36,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149864994] [2023-11-29 05:02:36,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149864994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:36,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:36,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:02:36,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124264840] [2023-11-29 05:02:36,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:36,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:02:36,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:36,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:02:36,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:02:36,998 INFO L87 Difference]: Start difference. First operand 2507 states and 4466 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:37,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:37,170 INFO L93 Difference]: Finished difference Result 7531 states and 13420 transitions. [2023-11-29 05:02:37,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:02:37,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 665 [2023-11-29 05:02:37,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:37,199 INFO L225 Difference]: With dead ends: 7531 [2023-11-29 05:02:37,199 INFO L226 Difference]: Without dead ends: 5025 [2023-11-29 05:02:37,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 662 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 05:02:37,207 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 243 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:37,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 1661 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:02:37,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5025 states. [2023-11-29 05:02:37,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5025 to 4975. [2023-11-29 05:02:37,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4975 states, 3886 states have (on average 1.725681935151827) internal successors, (6706), 3906 states have internal predecessors, (6706), 1064 states have call successors, (1064), 24 states have call predecessors, (1064), 24 states have return successors, (1064), 1044 states have call predecessors, (1064), 1064 states have call successors, (1064) [2023-11-29 05:02:37,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4975 states to 4975 states and 8834 transitions. [2023-11-29 05:02:37,569 INFO L78 Accepts]: Start accepts. Automaton has 4975 states and 8834 transitions. Word has length 665 [2023-11-29 05:02:37,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:37,570 INFO L495 AbstractCegarLoop]: Abstraction has 4975 states and 8834 transitions. [2023-11-29 05:02:37,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:37,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4975 states and 8834 transitions. [2023-11-29 05:02:37,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-11-29 05:02:37,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:37,603 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:37,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:02:37,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:37,804 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:37,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:37,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1182122595, now seen corresponding path program 1 times [2023-11-29 05:02:37,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:37,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901630253] [2023-11-29 05:02:37,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:37,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:37,879 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:37,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951296354] [2023-11-29 05:02:37,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:37,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:37,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:37,880 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:37,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:02:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:38,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:02:38,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:38,321 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:02:38,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:02:38,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:38,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901630253] [2023-11-29 05:02:38,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:02:38,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951296354] [2023-11-29 05:02:38,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951296354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:38,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:38,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:02:38,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359740701] [2023-11-29 05:02:38,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:38,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:02:38,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:38,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:02:38,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:02:38,325 INFO L87 Difference]: Start difference. First operand 4975 states and 8834 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:38,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:38,760 INFO L93 Difference]: Finished difference Result 12731 states and 22258 transitions. [2023-11-29 05:02:38,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:02:38,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 665 [2023-11-29 05:02:38,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:38,820 INFO L225 Difference]: With dead ends: 12731 [2023-11-29 05:02:38,821 INFO L226 Difference]: Without dead ends: 7757 [2023-11-29 05:02:38,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 663 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 05:02:38,837 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 387 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:38,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1146 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:02:38,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7757 states. [2023-11-29 05:02:39,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7757 to 4999. [2023-11-29 05:02:39,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4999 states, 3910 states have (on average 1.721227621483376) internal successors, (6730), 3930 states have internal predecessors, (6730), 1064 states have call successors, (1064), 24 states have call predecessors, (1064), 24 states have return successors, (1064), 1044 states have call predecessors, (1064), 1064 states have call successors, (1064) [2023-11-29 05:02:39,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4999 states to 4999 states and 8858 transitions. [2023-11-29 05:02:39,610 INFO L78 Accepts]: Start accepts. Automaton has 4999 states and 8858 transitions. Word has length 665 [2023-11-29 05:02:39,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:39,612 INFO L495 AbstractCegarLoop]: Abstraction has 4999 states and 8858 transitions. [2023-11-29 05:02:39,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:39,612 INFO L276 IsEmpty]: Start isEmpty. Operand 4999 states and 8858 transitions. [2023-11-29 05:02:39,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-11-29 05:02:39,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:39,624 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:39,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:02:39,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 05:02:39,825 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:39,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:39,826 INFO L85 PathProgramCache]: Analyzing trace with hash -812022111, now seen corresponding path program 1 times [2023-11-29 05:02:39,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:39,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134928283] [2023-11-29 05:02:39,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:39,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:39,909 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:39,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741923625] [2023-11-29 05:02:39,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:39,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:39,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:39,911 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:39,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:02:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:40,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 1527 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:02:40,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:40,328 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:02:40,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:02:40,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:40,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134928283] [2023-11-29 05:02:40,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:02:40,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741923625] [2023-11-29 05:02:40,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741923625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:40,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:40,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:02:40,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617717924] [2023-11-29 05:02:40,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:40,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:02:40,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:40,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:02:40,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:02:40,333 INFO L87 Difference]: Start difference. First operand 4999 states and 8858 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:40,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:40,802 INFO L93 Difference]: Finished difference Result 14935 states and 26452 transitions. [2023-11-29 05:02:40,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:02:40,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 665 [2023-11-29 05:02:40,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:40,853 INFO L225 Difference]: With dead ends: 14935 [2023-11-29 05:02:40,853 INFO L226 Difference]: Without dead ends: 9937 [2023-11-29 05:02:40,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 663 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 05:02:40,867 INFO L413 NwaCegarLoop]: 1088 mSDtfsCounter, 553 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:40,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 1636 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:02:40,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9937 states. [2023-11-29 05:02:41,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9937 to 9935. [2023-11-29 05:02:41,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9935 states, 7758 states have (on average 1.7107501933488012) internal successors, (13272), 7798 states have internal predecessors, (13272), 2128 states have call successors, (2128), 48 states have call predecessors, (2128), 48 states have return successors, (2128), 2088 states have call predecessors, (2128), 2128 states have call successors, (2128) [2023-11-29 05:02:41,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 17528 transitions. [2023-11-29 05:02:41,708 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 17528 transitions. Word has length 665 [2023-11-29 05:02:41,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:41,709 INFO L495 AbstractCegarLoop]: Abstraction has 9935 states and 17528 transitions. [2023-11-29 05:02:41,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:41,709 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 17528 transitions. [2023-11-29 05:02:41,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-11-29 05:02:41,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:41,721 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:41,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:02:41,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 05:02:41,922 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:41,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:41,922 INFO L85 PathProgramCache]: Analyzing trace with hash 922082339, now seen corresponding path program 1 times [2023-11-29 05:02:41,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:41,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737518438] [2023-11-29 05:02:41,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:41,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:41,987 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:41,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387429485] [2023-11-29 05:02:41,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:41,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:41,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:41,988 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:41,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:02:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:42,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 1526 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:02:42,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:02:42,445 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:02:42,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:42,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737518438] [2023-11-29 05:02:42,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:02:42,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387429485] [2023-11-29 05:02:42,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387429485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:42,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:42,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:02:42,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546756698] [2023-11-29 05:02:42,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:42,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:02:42,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:42,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:02:42,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:02:42,449 INFO L87 Difference]: Start difference. First operand 9935 states and 17528 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:42,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:42,793 INFO L93 Difference]: Finished difference Result 14873 states and 26265 transitions. [2023-11-29 05:02:42,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:02:42,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 665 [2023-11-29 05:02:42,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:42,811 INFO L225 Difference]: With dead ends: 14873 [2023-11-29 05:02:42,811 INFO L226 Difference]: Without dead ends: 4939 [2023-11-29 05:02:42,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 662 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 05:02:42,832 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 553 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:42,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 1085 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:02:42,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4939 states. [2023-11-29 05:02:43,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4939 to 4939. [2023-11-29 05:02:43,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4939 states, 3850 states have (on average 1.6919480519480519) internal successors, (6514), 3870 states have internal predecessors, (6514), 1064 states have call successors, (1064), 24 states have call predecessors, (1064), 24 states have return successors, (1064), 1044 states have call predecessors, (1064), 1064 states have call successors, (1064) [2023-11-29 05:02:43,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4939 states to 4939 states and 8642 transitions. [2023-11-29 05:02:43,281 INFO L78 Accepts]: Start accepts. Automaton has 4939 states and 8642 transitions. Word has length 665 [2023-11-29 05:02:43,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:43,282 INFO L495 AbstractCegarLoop]: Abstraction has 4939 states and 8642 transitions. [2023-11-29 05:02:43,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:43,283 INFO L276 IsEmpty]: Start isEmpty. Operand 4939 states and 8642 transitions. [2023-11-29 05:02:43,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2023-11-29 05:02:43,294 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:43,294 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:43,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:02:43,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:43,495 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:43,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:43,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2057842162, now seen corresponding path program 1 times [2023-11-29 05:02:43,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:43,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89319580] [2023-11-29 05:02:43,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:43,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:43,552 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:43,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174928440] [2023-11-29 05:02:43,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:43,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:43,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:43,553 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:43,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:02:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:43,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 1530 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:02:43,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:43,990 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:02:43,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:02:43,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:43,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89319580] [2023-11-29 05:02:43,990 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:02:43,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174928440] [2023-11-29 05:02:43,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174928440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:43,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:43,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:02:43,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862645143] [2023-11-29 05:02:43,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:43,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:02:43,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:43,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:02:43,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:02:43,994 INFO L87 Difference]: Start difference. First operand 4939 states and 8642 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:44,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:44,430 INFO L93 Difference]: Finished difference Result 14815 states and 25924 transitions. [2023-11-29 05:02:44,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:02:44,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 667 [2023-11-29 05:02:44,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:44,459 INFO L225 Difference]: With dead ends: 14815 [2023-11-29 05:02:44,459 INFO L226 Difference]: Without dead ends: 9877 [2023-11-29 05:02:44,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 665 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 05:02:44,472 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 538 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:44,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 1137 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:02:44,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9877 states. [2023-11-29 05:02:45,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9877 to 9875. [2023-11-29 05:02:45,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9875 states, 7698 states have (on average 1.6858924395947) internal successors, (12978), 7738 states have internal predecessors, (12978), 2128 states have call successors, (2128), 48 states have call predecessors, (2128), 48 states have return successors, (2128), 2088 states have call predecessors, (2128), 2128 states have call successors, (2128) [2023-11-29 05:02:45,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9875 states to 9875 states and 17234 transitions. [2023-11-29 05:02:45,197 INFO L78 Accepts]: Start accepts. Automaton has 9875 states and 17234 transitions. Word has length 667 [2023-11-29 05:02:45,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:45,198 INFO L495 AbstractCegarLoop]: Abstraction has 9875 states and 17234 transitions. [2023-11-29 05:02:45,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:45,199 INFO L276 IsEmpty]: Start isEmpty. Operand 9875 states and 17234 transitions. [2023-11-29 05:02:45,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2023-11-29 05:02:45,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:45,216 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:45,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:02:45,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:45,417 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:45,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:45,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1339731856, now seen corresponding path program 1 times [2023-11-29 05:02:45,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:45,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695233735] [2023-11-29 05:02:45,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:45,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:45,545 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:45,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500010265] [2023-11-29 05:02:45,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:45,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:45,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:45,547 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:45,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:02:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:45,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:02:45,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:46,029 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:02:46,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:02:46,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:46,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695233735] [2023-11-29 05:02:46,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:02:46,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500010265] [2023-11-29 05:02:46,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500010265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:46,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:46,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:02:46,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290991720] [2023-11-29 05:02:46,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:46,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:02:46,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:46,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:02:46,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:02:46,033 INFO L87 Difference]: Start difference. First operand 9875 states and 17234 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:46,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:46,567 INFO L93 Difference]: Finished difference Result 25319 states and 44272 transitions. [2023-11-29 05:02:46,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:02:46,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 667 [2023-11-29 05:02:46,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:46,598 INFO L225 Difference]: With dead ends: 25319 [2023-11-29 05:02:46,598 INFO L226 Difference]: Without dead ends: 15445 [2023-11-29 05:02:46,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 665 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 05:02:46,617 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 521 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:46,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 1153 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:02:46,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15445 states. [2023-11-29 05:02:47,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15445 to 15443. [2023-11-29 05:02:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15443 states, 12178 states have (on average 1.684184595171621) internal successors, (20510), 12238 states have internal predecessors, (20510), 3192 states have call successors, (3192), 72 states have call predecessors, (3192), 72 states have return successors, (3192), 3132 states have call predecessors, (3192), 3192 states have call successors, (3192) [2023-11-29 05:02:47,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15443 states to 15443 states and 26894 transitions. [2023-11-29 05:02:47,945 INFO L78 Accepts]: Start accepts. Automaton has 15443 states and 26894 transitions. Word has length 667 [2023-11-29 05:02:47,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:47,946 INFO L495 AbstractCegarLoop]: Abstraction has 15443 states and 26894 transitions. [2023-11-29 05:02:47,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:47,947 INFO L276 IsEmpty]: Start isEmpty. Operand 15443 states and 26894 transitions. [2023-11-29 05:02:47,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2023-11-29 05:02:47,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:47,958 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:47,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 05:02:48,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 05:02:48,159 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:48,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:48,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1574016148, now seen corresponding path program 1 times [2023-11-29 05:02:48,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:48,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706598715] [2023-11-29 05:02:48,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:48,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:48,222 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:48,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2006676258] [2023-11-29 05:02:48,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:48,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:48,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:48,224 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:48,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 05:02:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:48,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:02:48,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:02:48,682 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:02:48,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:48,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706598715] [2023-11-29 05:02:48,682 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:02:48,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006676258] [2023-11-29 05:02:48,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006676258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:48,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:48,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:02:48,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047129719] [2023-11-29 05:02:48,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:48,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:02:48,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:48,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:02:48,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:02:48,686 INFO L87 Difference]: Start difference. First operand 15443 states and 26894 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:49,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:49,393 INFO L93 Difference]: Finished difference Result 30885 states and 53787 transitions. [2023-11-29 05:02:49,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:02:49,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 667 [2023-11-29 05:02:49,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:49,425 INFO L225 Difference]: With dead ends: 30885 [2023-11-29 05:02:49,426 INFO L226 Difference]: Without dead ends: 15443 [2023-11-29 05:02:49,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 665 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 05:02:49,446 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 534 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:49,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 548 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:02:49,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15443 states. [2023-11-29 05:02:50,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15443 to 15443. [2023-11-29 05:02:50,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15443 states, 12178 states have (on average 1.672359993430777) internal successors, (20366), 12238 states have internal predecessors, (20366), 3192 states have call successors, (3192), 72 states have call predecessors, (3192), 72 states have return successors, (3192), 3132 states have call predecessors, (3192), 3192 states have call successors, (3192) [2023-11-29 05:02:50,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15443 states to 15443 states and 26750 transitions. [2023-11-29 05:02:50,547 INFO L78 Accepts]: Start accepts. Automaton has 15443 states and 26750 transitions. Word has length 667 [2023-11-29 05:02:50,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:50,548 INFO L495 AbstractCegarLoop]: Abstraction has 15443 states and 26750 transitions. [2023-11-29 05:02:50,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:50,548 INFO L276 IsEmpty]: Start isEmpty. Operand 15443 states and 26750 transitions. [2023-11-29 05:02:50,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2023-11-29 05:02:50,560 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:50,560 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:50,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 05:02:50,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:50,761 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:50,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:50,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1792870866, now seen corresponding path program 1 times [2023-11-29 05:02:50,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:50,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645564267] [2023-11-29 05:02:50,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:50,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:50,820 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:50,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747784213] [2023-11-29 05:02:50,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:50,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:50,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:50,821 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:50,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 05:02:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:51,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:02:51,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:51,353 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:02:51,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:02:51,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:51,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645564267] [2023-11-29 05:02:51,353 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:02:51,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747784213] [2023-11-29 05:02:51,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747784213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:51,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:51,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:02:51,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959399914] [2023-11-29 05:02:51,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:51,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:02:51,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:51,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:02:51,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:02:51,356 INFO L87 Difference]: Start difference. First operand 15443 states and 26750 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:52,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:52,534 INFO L93 Difference]: Finished difference Result 38537 states and 66070 transitions. [2023-11-29 05:02:52,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:02:52,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 667 [2023-11-29 05:02:52,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:52,585 INFO L225 Difference]: With dead ends: 38537 [2023-11-29 05:02:52,585 INFO L226 Difference]: Without dead ends: 23095 [2023-11-29 05:02:52,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 665 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 05:02:52,617 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 183 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:52,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 1094 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:02:52,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23095 states. [2023-11-29 05:02:54,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23095 to 23081. [2023-11-29 05:02:54,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23081 states, 17296 states have (on average 1.616327474560592) internal successors, (27956), 17428 states have internal predecessors, (27956), 5640 states have call successors, (5640), 144 states have call predecessors, (5640), 144 states have return successors, (5640), 5508 states have call predecessors, (5640), 5640 states have call successors, (5640) [2023-11-29 05:02:54,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23081 states to 23081 states and 39236 transitions. [2023-11-29 05:02:54,634 INFO L78 Accepts]: Start accepts. Automaton has 23081 states and 39236 transitions. Word has length 667 [2023-11-29 05:02:54,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:54,634 INFO L495 AbstractCegarLoop]: Abstraction has 23081 states and 39236 transitions. [2023-11-29 05:02:54,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:54,634 INFO L276 IsEmpty]: Start isEmpty. Operand 23081 states and 39236 transitions. [2023-11-29 05:02:54,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2023-11-29 05:02:54,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:54,649 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:54,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 05:02:54,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:54,850 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:54,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:54,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1652322256, now seen corresponding path program 1 times [2023-11-29 05:02:54,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:54,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072679992] [2023-11-29 05:02:54,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:54,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:54,912 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:02:54,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [117485035] [2023-11-29 05:02:54,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:54,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:54,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:54,913 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:54,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 05:02:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:55,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 1527 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:02:55,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:56,887 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:02:56,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:02:56,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:56,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072679992] [2023-11-29 05:02:56,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:02:56,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117485035] [2023-11-29 05:02:56,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117485035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:56,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:56,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:02:56,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186680074] [2023-11-29 05:02:56,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:56,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:02:56,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:56,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:02:56,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:02:56,891 INFO L87 Difference]: Start difference. First operand 23081 states and 39236 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:02:58,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:58,440 INFO L93 Difference]: Finished difference Result 55887 states and 95032 transitions. [2023-11-29 05:02:58,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:02:58,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 667 [2023-11-29 05:02:58,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:58,501 INFO L225 Difference]: With dead ends: 55887 [2023-11-29 05:02:58,502 INFO L226 Difference]: Without dead ends: 32807 [2023-11-29 05:02:58,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 665 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 05:02:58,530 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 226 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:58,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 1122 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:02:58,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32807 states. [2023-11-29 05:03:01,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32807 to 32805. [2023-11-29 05:03:01,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32805 states, 24548 states have (on average 1.6133289881049373) internal successors, (39604), 24740 states have internal predecessors, (39604), 8048 states have call successors, (8048), 208 states have call predecessors, (8048), 208 states have return successors, (8048), 7856 states have call predecessors, (8048), 8048 states have call successors, (8048) [2023-11-29 05:03:01,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32805 states to 32805 states and 55700 transitions. [2023-11-29 05:03:01,624 INFO L78 Accepts]: Start accepts. Automaton has 32805 states and 55700 transitions. Word has length 667 [2023-11-29 05:03:01,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:03:01,625 INFO L495 AbstractCegarLoop]: Abstraction has 32805 states and 55700 transitions. [2023-11-29 05:03:01,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:03:01,625 INFO L276 IsEmpty]: Start isEmpty. Operand 32805 states and 55700 transitions. [2023-11-29 05:03:01,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-11-29 05:03:01,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:03:01,652 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:03:01,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 05:03:01,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 05:03:01,853 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:03:01,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:03:01,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1625357992, now seen corresponding path program 1 times [2023-11-29 05:03:01,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:03:01,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832551747] [2023-11-29 05:03:01,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:01,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:03:01,900 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:03:01,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043292898] [2023-11-29 05:03:01,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:01,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:03:01,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:03:01,901 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:03:01,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 05:03:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:02,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 1533 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:03:02,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:03:02,358 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:03:02,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:03:02,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:02,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832551747] [2023-11-29 05:03:02,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:03:02,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043292898] [2023-11-29 05:03:02,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043292898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:03:02,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:03:02,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:03:02,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688450178] [2023-11-29 05:03:02,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:03:02,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:03:02,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:03:02,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:03:02,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:03:02,362 INFO L87 Difference]: Start difference. First operand 32805 states and 55700 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:03:07,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:03:07,061 INFO L93 Difference]: Finished difference Result 131325 states and 222840 transitions. [2023-11-29 05:03:07,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:03:07,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 668 [2023-11-29 05:03:07,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:03:07,231 INFO L225 Difference]: With dead ends: 131325 [2023-11-29 05:03:07,232 INFO L226 Difference]: Without dead ends: 98521 [2023-11-29 05:03:07,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:03:07,285 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 1159 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:03:07,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1159 Valid, 2382 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:03:07,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98521 states. [2023-11-29 05:03:12,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98521 to 66955. [2023-11-29 05:03:12,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66955 states, 52666 states have (on average 1.646033494094862) internal successors, (86690), 53066 states have internal predecessors, (86690), 13872 states have call successors, (13872), 416 states have call predecessors, (13872), 416 states have return successors, (13872), 13472 states have call predecessors, (13872), 13872 states have call successors, (13872) [2023-11-29 05:03:12,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66955 states to 66955 states and 114434 transitions. [2023-11-29 05:03:12,849 INFO L78 Accepts]: Start accepts. Automaton has 66955 states and 114434 transitions. Word has length 668 [2023-11-29 05:03:12,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:03:12,850 INFO L495 AbstractCegarLoop]: Abstraction has 66955 states and 114434 transitions. [2023-11-29 05:03:12,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:03:12,850 INFO L276 IsEmpty]: Start isEmpty. Operand 66955 states and 114434 transitions. [2023-11-29 05:03:12,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-11-29 05:03:12,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:03:12,875 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:03:12,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 05:03:13,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 05:03:13,076 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:03:13,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:03:13,076 INFO L85 PathProgramCache]: Analyzing trace with hash 482855526, now seen corresponding path program 1 times [2023-11-29 05:03:13,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:03:13,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839495396] [2023-11-29 05:03:13,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:13,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:03:13,122 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:03:13,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284551616] [2023-11-29 05:03:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:13,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:03:13,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:03:13,124 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:03:13,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 05:03:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:13,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 1531 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:03:13,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:03:13,519 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:03:13,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:03:13,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:13,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839495396] [2023-11-29 05:03:13,519 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:03:13,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284551616] [2023-11-29 05:03:13,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284551616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:03:13,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:03:13,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:03:13,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349752124] [2023-11-29 05:03:13,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:03:13,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:03:13,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:03:13,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:03:13,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:03:13,522 INFO L87 Difference]: Start difference. First operand 66955 states and 114434 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:03:19,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:03:19,065 INFO L93 Difference]: Finished difference Result 185403 states and 316718 transitions. [2023-11-29 05:03:19,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:03:19,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 668 [2023-11-29 05:03:19,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:03:19,321 INFO L225 Difference]: With dead ends: 185403 [2023-11-29 05:03:19,321 INFO L226 Difference]: Without dead ends: 118449 [2023-11-29 05:03:19,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 666 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 05:03:19,426 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 307 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:03:19,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1420 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:03:19,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118449 states. [2023-11-29 05:03:26,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118449 to 118021. [2023-11-29 05:03:26,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118021 states, 94164 states have (on average 1.6530946009090524) internal successors, (155662), 94980 states have internal predecessors, (155662), 23024 states have call successors, (23024), 832 states have call predecessors, (23024), 832 states have return successors, (23024), 22208 states have call predecessors, (23024), 23024 states have call successors, (23024) [2023-11-29 05:03:27,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118021 states to 118021 states and 201710 transitions. [2023-11-29 05:03:27,109 INFO L78 Accepts]: Start accepts. Automaton has 118021 states and 201710 transitions. Word has length 668 [2023-11-29 05:03:27,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:03:27,109 INFO L495 AbstractCegarLoop]: Abstraction has 118021 states and 201710 transitions. [2023-11-29 05:03:27,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:03:27,110 INFO L276 IsEmpty]: Start isEmpty. Operand 118021 states and 201710 transitions. [2023-11-29 05:03:27,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-11-29 05:03:27,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:03:27,367 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:03:27,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 05:03:27,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 05:03:27,568 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:03:27,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:03:27,569 INFO L85 PathProgramCache]: Analyzing trace with hash -337668885, now seen corresponding path program 1 times [2023-11-29 05:03:27,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:03:27,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519908845] [2023-11-29 05:03:27,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:27,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:03:27,626 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:03:27,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1599419647] [2023-11-29 05:03:27,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:27,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:03:27,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:03:27,627 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:03:27,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 05:03:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:27,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 1532 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:03:27,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:03:28,565 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:03:28,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:03:28,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:28,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519908845] [2023-11-29 05:03:28,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:03:28,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599419647] [2023-11-29 05:03:28,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599419647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:03:28,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:03:28,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:03:28,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817155038] [2023-11-29 05:03:28,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:03:28,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:03:28,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:03:28,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:03:28,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:03:28,569 INFO L87 Difference]: Start difference. First operand 118021 states and 201710 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:03:34,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:03:34,544 INFO L93 Difference]: Finished difference Result 236363 states and 404060 transitions. [2023-11-29 05:03:34,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:03:34,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 668 [2023-11-29 05:03:34,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:03:34,774 INFO L225 Difference]: With dead ends: 236363 [2023-11-29 05:03:34,774 INFO L226 Difference]: Without dead ends: 118343 [2023-11-29 05:03:35,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 665 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 05:03:35,071 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 223 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:03:35,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 1628 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:03:35,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118343 states. [2023-11-29 05:03:42,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118343 to 117765. [2023-11-29 05:03:42,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117765 states, 93908 states have (on average 1.6507858755377605) internal successors, (155022), 94724 states have internal predecessors, (155022), 23024 states have call successors, (23024), 832 states have call predecessors, (23024), 832 states have return successors, (23024), 22208 states have call predecessors, (23024), 23024 states have call successors, (23024) [2023-11-29 05:03:43,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117765 states to 117765 states and 201070 transitions. [2023-11-29 05:03:43,224 INFO L78 Accepts]: Start accepts. Automaton has 117765 states and 201070 transitions. Word has length 668 [2023-11-29 05:03:43,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:03:43,225 INFO L495 AbstractCegarLoop]: Abstraction has 117765 states and 201070 transitions. [2023-11-29 05:03:43,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:03:43,225 INFO L276 IsEmpty]: Start isEmpty. Operand 117765 states and 201070 transitions. [2023-11-29 05:03:43,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-11-29 05:03:43,273 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:03:43,274 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:03:43,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 05:03:43,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 05:03:43,475 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:03:43,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:03:43,475 INFO L85 PathProgramCache]: Analyzing trace with hash 320852971, now seen corresponding path program 1 times [2023-11-29 05:03:43,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:03:43,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525488919] [2023-11-29 05:03:43,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:43,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:03:43,530 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:03:43,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2110110446] [2023-11-29 05:03:43,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:43,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:03:43,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:03:43,531 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:03:43,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 05:03:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:43,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 1532 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:03:43,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:03:45,119 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 9520 proven. 0 refuted. 0 times theorem prover too weak. 11904 trivial. 0 not checked. [2023-11-29 05:03:45,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:03:45,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:45,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525488919] [2023-11-29 05:03:45,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:03:45,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110110446] [2023-11-29 05:03:45,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110110446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:03:45,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:03:45,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:03:45,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293670551] [2023-11-29 05:03:45,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:03:45,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:03:45,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:03:45,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:03:45,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:03:45,123 INFO L87 Difference]: Start difference. First operand 117765 states and 201070 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2023-11-29 05:03:48,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:03:48,907 INFO L93 Difference]: Finished difference Result 192641 states and 329178 transitions. [2023-11-29 05:03:48,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:03:48,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) Word has length 668 [2023-11-29 05:03:48,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:03:49,038 INFO L225 Difference]: With dead ends: 192641 [2023-11-29 05:03:49,038 INFO L226 Difference]: Without dead ends: 74877 [2023-11-29 05:03:49,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:03:49,141 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 362 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:03:49,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 1690 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:03:49,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74877 states. [2023-11-29 05:03:54,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74877 to 74869. [2023-11-29 05:03:54,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74869 states, 59692 states have (on average 1.6542250217784629) internal successors, (98744), 60188 states have internal predecessors, (98744), 14664 states have call successors, (14664), 512 states have call predecessors, (14664), 512 states have return successors, (14664), 14168 states have call predecessors, (14664), 14664 states have call successors, (14664) [2023-11-29 05:03:54,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74869 states to 74869 states and 128072 transitions. [2023-11-29 05:03:54,283 INFO L78 Accepts]: Start accepts. Automaton has 74869 states and 128072 transitions. Word has length 668 [2023-11-29 05:03:54,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:03:54,283 INFO L495 AbstractCegarLoop]: Abstraction has 74869 states and 128072 transitions. [2023-11-29 05:03:54,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2023-11-29 05:03:54,284 INFO L276 IsEmpty]: Start isEmpty. Operand 74869 states and 128072 transitions. [2023-11-29 05:03:54,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-11-29 05:03:54,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:03:54,303 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:03:54,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 05:03:54,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 05:03:54,504 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:03:54,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:03:54,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1214758749, now seen corresponding path program 1 times [2023-11-29 05:03:54,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:03:54,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197551370] [2023-11-29 05:03:54,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:54,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:03:54,563 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:03:54,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [928144406] [2023-11-29 05:03:54,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:54,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:03:54,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:03:54,564 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:03:54,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 05:03:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:54,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 1532 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:03:54,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:03:55,568 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:03:55,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:03:55,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:55,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197551370] [2023-11-29 05:03:55,568 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:03:55,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928144406] [2023-11-29 05:03:55,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928144406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:03:55,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:03:55,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:03:55,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723362359] [2023-11-29 05:03:55,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:03:55,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:03:55,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:03:55,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:03:55,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:03:55,571 INFO L87 Difference]: Start difference. First operand 74869 states and 128072 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:04:07,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:04:07,591 INFO L93 Difference]: Finished difference Result 297828 states and 509484 transitions. [2023-11-29 05:04:07,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:04:07,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 669 [2023-11-29 05:04:07,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:04:08,161 INFO L225 Difference]: With dead ends: 297828 [2023-11-29 05:04:08,161 INFO L226 Difference]: Without dead ends: 222960 [2023-11-29 05:04:08,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 664 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:04:08,262 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 1460 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:04:08,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1460 Valid, 2085 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 05:04:08,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222960 states. [2023-11-29 05:04:22,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222960 to 205165. [2023-11-29 05:04:22,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205165 states, 160278 states have (on average 1.6209461061405808) internal successors, (259802), 161799 states have internal predecessors, (259802), 43331 states have call successors, (43331), 1555 states have call predecessors, (43331), 1555 states have return successors, (43331), 41810 states have call predecessors, (43331), 43331 states have call successors, (43331) [2023-11-29 05:04:23,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205165 states to 205165 states and 346464 transitions. [2023-11-29 05:04:23,577 INFO L78 Accepts]: Start accepts. Automaton has 205165 states and 346464 transitions. Word has length 669 [2023-11-29 05:04:23,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:04:23,578 INFO L495 AbstractCegarLoop]: Abstraction has 205165 states and 346464 transitions. [2023-11-29 05:04:23,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:04:23,578 INFO L276 IsEmpty]: Start isEmpty. Operand 205165 states and 346464 transitions. [2023-11-29 05:04:23,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-11-29 05:04:23,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:04:23,641 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:04:23,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 05:04:23,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 05:04:23,841 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:04:23,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:04:23,842 INFO L85 PathProgramCache]: Analyzing trace with hash 263096793, now seen corresponding path program 1 times [2023-11-29 05:04:23,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:04:23,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899180374] [2023-11-29 05:04:23,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:04:23,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:04:24,152 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:04:24,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [80392624] [2023-11-29 05:04:24,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:04:24,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:04:24,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:04:24,154 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:04:24,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 05:04:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:04:24,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 1534 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:04:24,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:04:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:04:25,230 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:04:25,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:04:25,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899180374] [2023-11-29 05:04:25,230 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:04:25,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80392624] [2023-11-29 05:04:25,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80392624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:04:25,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:04:25,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:04:25,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585045255] [2023-11-29 05:04:25,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:04:25,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:04:25,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:04:25,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:04:25,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:04:25,233 INFO L87 Difference]: Start difference. First operand 205165 states and 346464 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:04:45,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:04:45,830 INFO L93 Difference]: Finished difference Result 501136 states and 842239 transitions. [2023-11-29 05:04:45,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:04:45,831 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 669 [2023-11-29 05:04:45,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:04:46,552 INFO L225 Difference]: With dead ends: 501136 [2023-11-29 05:04:46,552 INFO L226 Difference]: Without dead ends: 296076 [2023-11-29 05:04:46,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 664 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:04:46,823 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 1421 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:04:46,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 1714 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:04:47,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296076 states. [2023-11-29 05:05:05,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296076 to 219316. [2023-11-29 05:05:05,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219316 states, 173478 states have (on average 1.6292901693586506) internal successors, (282646), 175031 states have internal predecessors, (282646), 44249 states have call successors, (44249), 1588 states have call predecessors, (44249), 1588 states have return successors, (44249), 42696 states have call predecessors, (44249), 44249 states have call successors, (44249) [2023-11-29 05:05:06,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219316 states to 219316 states and 371144 transitions. [2023-11-29 05:05:06,917 INFO L78 Accepts]: Start accepts. Automaton has 219316 states and 371144 transitions. Word has length 669 [2023-11-29 05:05:06,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:05:06,918 INFO L495 AbstractCegarLoop]: Abstraction has 219316 states and 371144 transitions. [2023-11-29 05:05:06,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:05:06,918 INFO L276 IsEmpty]: Start isEmpty. Operand 219316 states and 371144 transitions. [2023-11-29 05:05:07,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-11-29 05:05:07,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:05:07,010 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:05:07,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 05:05:07,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:05:07,211 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:05:07,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:05:07,212 INFO L85 PathProgramCache]: Analyzing trace with hash 285729047, now seen corresponding path program 1 times [2023-11-29 05:05:07,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:05:07,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771439979] [2023-11-29 05:05:07,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:07,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:05:07,271 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:05:07,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [235898695] [2023-11-29 05:05:07,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:07,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:05:07,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:05:07,273 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:05:07,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 05:05:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:05:07,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 1535 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:05:07,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:05:07,920 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 10543 proven. 129 refuted. 0 times theorem prover too weak. 10752 trivial. 0 not checked. [2023-11-29 05:05:07,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:05:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 180 proven. 129 refuted. 0 times theorem prover too weak. 21115 trivial. 0 not checked. [2023-11-29 05:05:08,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:05:08,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771439979] [2023-11-29 05:05:08,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:05:08,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235898695] [2023-11-29 05:05:08,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235898695] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:05:08,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:05:08,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 05:05:08,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886150148] [2023-11-29 05:05:08,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:05:08,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:05:08,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:05:08,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:05:08,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:05:08,611 INFO L87 Difference]: Start difference. First operand 219316 states and 371144 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2023-11-29 05:05:14,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:05:14,818 INFO L93 Difference]: Finished difference Result 299166 states and 507220 transitions. [2023-11-29 05:05:14,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:05:14,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) Word has length 669 [2023-11-29 05:05:14,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:05:14,968 INFO L225 Difference]: With dead ends: 299166 [2023-11-29 05:05:14,968 INFO L226 Difference]: Without dead ends: 79955 [2023-11-29 05:05:15,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1340 GetRequests, 1330 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:05:15,360 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 356 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:05:15,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 1089 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:05:15,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79955 states. [2023-11-29 05:05:21,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79955 to 78891. [2023-11-29 05:05:21,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78891 states, 63589 states have (on average 1.6394816713582538) internal successors, (104253), 64086 states have internal predecessors, (104253), 14768 states have call successors, (14768), 533 states have call predecessors, (14768), 533 states have return successors, (14768), 14271 states have call predecessors, (14768), 14768 states have call successors, (14768) [2023-11-29 05:05:21,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78891 states to 78891 states and 133789 transitions. [2023-11-29 05:05:21,888 INFO L78 Accepts]: Start accepts. Automaton has 78891 states and 133789 transitions. Word has length 669 [2023-11-29 05:05:21,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:05:21,889 INFO L495 AbstractCegarLoop]: Abstraction has 78891 states and 133789 transitions. [2023-11-29 05:05:21,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2023-11-29 05:05:21,889 INFO L276 IsEmpty]: Start isEmpty. Operand 78891 states and 133789 transitions. [2023-11-29 05:05:21,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-11-29 05:05:21,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:05:21,914 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:05:21,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 05:05:22,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:05:22,114 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:05:22,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:05:22,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1300014757, now seen corresponding path program 1 times [2023-11-29 05:05:22,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:05:22,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70716487] [2023-11-29 05:05:22,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:22,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:05:22,165 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:05:22,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877841841] [2023-11-29 05:05:22,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:22,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:05:22,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:05:22,167 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:05:22,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 05:05:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:05:22,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 1533 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:05:22,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:05:22,700 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:05:22,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:05:22,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:05:22,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70716487] [2023-11-29 05:05:22,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:05:22,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877841841] [2023-11-29 05:05:22,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877841841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:05:22,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:05:22,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:05:22,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283443402] [2023-11-29 05:05:22,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:05:22,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:05:22,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:05:22,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:05:22,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:05:22,702 INFO L87 Difference]: Start difference. First operand 78891 states and 133789 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:05:34,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:05:34,944 INFO L93 Difference]: Finished difference Result 240065 states and 403284 transitions. [2023-11-29 05:05:34,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:05:34,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 669 [2023-11-29 05:05:34,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:05:35,252 INFO L225 Difference]: With dead ends: 240065 [2023-11-29 05:05:35,252 INFO L226 Difference]: Without dead ends: 161357 [2023-11-29 05:05:35,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:05:35,518 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 984 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:05:35,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 2379 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:05:35,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161357 states. [2023-11-29 05:05:43,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161357 to 84465. [2023-11-29 05:05:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84465 states, 69163 states have (on average 1.6532972832294723) internal successors, (114347), 69660 states have internal predecessors, (114347), 14768 states have call successors, (14768), 533 states have call predecessors, (14768), 533 states have return successors, (14768), 14271 states have call predecessors, (14768), 14768 states have call successors, (14768) [2023-11-29 05:05:43,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84465 states to 84465 states and 143883 transitions. [2023-11-29 05:05:43,664 INFO L78 Accepts]: Start accepts. Automaton has 84465 states and 143883 transitions. Word has length 669 [2023-11-29 05:05:43,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:05:43,664 INFO L495 AbstractCegarLoop]: Abstraction has 84465 states and 143883 transitions. [2023-11-29 05:05:43,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:05:43,665 INFO L276 IsEmpty]: Start isEmpty. Operand 84465 states and 143883 transitions. [2023-11-29 05:05:43,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-11-29 05:05:43,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:05:43,694 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:05:43,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 05:05:43,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 05:05:43,895 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:05:43,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:05:43,895 INFO L85 PathProgramCache]: Analyzing trace with hash -119161658, now seen corresponding path program 1 times [2023-11-29 05:05:43,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:05:43,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972260923] [2023-11-29 05:05:43,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:43,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:05:43,952 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:05:43,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142501470] [2023-11-29 05:05:43,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:43,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:05:43,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:05:43,953 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:05:43,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 05:05:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:05:44,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:05:44,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:05:44,813 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:05:44,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:05:44,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:05:44,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972260923] [2023-11-29 05:05:44,813 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:05:44,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142501470] [2023-11-29 05:05:44,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142501470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:05:44,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:05:44,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:05:44,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436098488] [2023-11-29 05:05:44,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:05:44,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:05:44,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:05:44,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:05:44,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:05:44,816 INFO L87 Difference]: Start difference. First operand 84465 states and 143883 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:05:50,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:05:50,390 INFO L93 Difference]: Finished difference Result 168795 states and 287571 transitions. [2023-11-29 05:05:50,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:05:50,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 669 [2023-11-29 05:05:50,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:05:50,520 INFO L225 Difference]: With dead ends: 168795 [2023-11-29 05:05:50,520 INFO L226 Difference]: Without dead ends: 84513 [2023-11-29 05:05:50,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 666 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 05:05:50,597 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 272 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:05:50,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 1711 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:05:50,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84513 states. [2023-11-29 05:05:57,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84513 to 84505. [2023-11-29 05:05:57,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84505 states, 69203 states have (on average 1.652919671112524) internal successors, (114387), 69700 states have internal predecessors, (114387), 14768 states have call successors, (14768), 533 states have call predecessors, (14768), 533 states have return successors, (14768), 14271 states have call predecessors, (14768), 14768 states have call successors, (14768) [2023-11-29 05:05:57,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84505 states to 84505 states and 143923 transitions. [2023-11-29 05:05:57,506 INFO L78 Accepts]: Start accepts. Automaton has 84505 states and 143923 transitions. Word has length 669 [2023-11-29 05:05:57,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:05:57,507 INFO L495 AbstractCegarLoop]: Abstraction has 84505 states and 143923 transitions. [2023-11-29 05:05:57,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:05:57,507 INFO L276 IsEmpty]: Start isEmpty. Operand 84505 states and 143923 transitions. [2023-11-29 05:05:57,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-11-29 05:05:57,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:05:57,532 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:05:57,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 05:05:57,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 05:05:57,733 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:05:57,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:05:57,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1998292604, now seen corresponding path program 1 times [2023-11-29 05:05:57,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:05:57,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377034585] [2023-11-29 05:05:57,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:57,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:05:57,778 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:05:57,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435267857] [2023-11-29 05:05:57,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:57,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:05:57,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:05:57,779 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:05:57,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 05:05:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:05:58,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 1536 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:05:58,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:05:58,201 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:05:58,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:05:58,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:05:58,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377034585] [2023-11-29 05:05:58,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:05:58,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435267857] [2023-11-29 05:05:58,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435267857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:05:58,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:05:58,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:05:58,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514183132] [2023-11-29 05:05:58,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:05:58,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:05:58,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:05:58,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:05:58,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:05:58,204 INFO L87 Difference]: Start difference. First operand 84505 states and 143923 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:06:09,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:06:09,786 INFO L93 Difference]: Finished difference Result 265973 states and 453117 transitions. [2023-11-29 05:06:09,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:06:09,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 669 [2023-11-29 05:06:09,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:06:10,074 INFO L225 Difference]: With dead ends: 265973 [2023-11-29 05:06:10,074 INFO L226 Difference]: Without dead ends: 181651 [2023-11-29 05:06:10,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:06:10,161 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 771 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:06:10,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 2408 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:06:10,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181651 states. [2023-11-29 05:06:21,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181651 to 136347. [2023-11-29 05:06:21,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136347 states, 112364 states have (on average 1.6553522480509772) internal successors, (186002), 113181 states have internal predecessors, (186002), 23128 states have call successors, (23128), 854 states have call predecessors, (23128), 854 states have return successors, (23128), 22311 states have call predecessors, (23128), 23128 states have call successors, (23128) [2023-11-29 05:06:22,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136347 states to 136347 states and 232258 transitions. [2023-11-29 05:06:22,262 INFO L78 Accepts]: Start accepts. Automaton has 136347 states and 232258 transitions. Word has length 669 [2023-11-29 05:06:22,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:06:22,262 INFO L495 AbstractCegarLoop]: Abstraction has 136347 states and 232258 transitions. [2023-11-29 05:06:22,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:06:22,263 INFO L276 IsEmpty]: Start isEmpty. Operand 136347 states and 232258 transitions. [2023-11-29 05:06:22,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-11-29 05:06:22,306 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:06:22,306 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:06:22,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 05:06:22,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 05:06:22,507 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:06:22,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:06:22,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1757321160, now seen corresponding path program 1 times [2023-11-29 05:06:22,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:06:22,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772924441] [2023-11-29 05:06:22,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:06:22,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:06:22,550 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:06:22,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409784165] [2023-11-29 05:06:22,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:06:22,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:06:22,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:06:22,551 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:06:22,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 05:06:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:06:22,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:06:22,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:06:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:06:23,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:06:23,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:06:23,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772924441] [2023-11-29 05:06:23,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:06:23,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409784165] [2023-11-29 05:06:23,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409784165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:06:23,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:06:23,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:06:23,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776466259] [2023-11-29 05:06:23,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:06:23,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:06:23,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:06:23,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:06:23,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:06:23,432 INFO L87 Difference]: Start difference. First operand 136347 states and 232258 transitions. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 6 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:06:40,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:06:40,076 INFO L93 Difference]: Finished difference Result 366705 states and 624224 transitions. [2023-11-29 05:06:40,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:06:40,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 6 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 669 [2023-11-29 05:06:40,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:06:40,662 INFO L225 Difference]: With dead ends: 366705 [2023-11-29 05:06:40,662 INFO L226 Difference]: Without dead ends: 230545 [2023-11-29 05:06:40,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:06:40,797 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 1621 mSDsluCounter, 3831 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 4762 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:06:40,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 4762 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 05:06:40,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230545 states. [2023-11-29 05:06:53,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230545 to 136987. [2023-11-29 05:06:54,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136987 states, 113004 states have (on average 1.655799794697533) internal successors, (187112), 113821 states have internal predecessors, (187112), 23128 states have call successors, (23128), 854 states have call predecessors, (23128), 854 states have return successors, (23128), 22311 states have call predecessors, (23128), 23128 states have call successors, (23128) [2023-11-29 05:06:54,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136987 states to 136987 states and 233368 transitions. [2023-11-29 05:06:54,609 INFO L78 Accepts]: Start accepts. Automaton has 136987 states and 233368 transitions. Word has length 669 [2023-11-29 05:06:54,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:06:54,610 INFO L495 AbstractCegarLoop]: Abstraction has 136987 states and 233368 transitions. [2023-11-29 05:06:54,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 6 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:06:54,610 INFO L276 IsEmpty]: Start isEmpty. Operand 136987 states and 233368 transitions. [2023-11-29 05:06:54,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-11-29 05:06:54,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:06:54,648 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:06:54,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 05:06:54,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:06:54,848 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:06:54,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:06:54,849 INFO L85 PathProgramCache]: Analyzing trace with hash -121809786, now seen corresponding path program 1 times [2023-11-29 05:06:54,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:06:54,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235842812] [2023-11-29 05:06:54,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:06:54,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:06:54,899 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:06:54,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [465645058] [2023-11-29 05:06:54,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:06:54,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:06:54,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:06:54,900 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:06:54,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 05:06:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:06:55,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:06:55,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:06:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:06:55,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:06:55,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:06:55,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235842812] [2023-11-29 05:06:55,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:06:55,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465645058] [2023-11-29 05:06:55,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465645058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:06:55,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:06:55,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:06:55,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602079613] [2023-11-29 05:06:55,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:06:55,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:06:55,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:06:55,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:06:55,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:06:55,331 INFO L87 Difference]: Start difference. First operand 136987 states and 233368 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:07:04,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:04,622 INFO L93 Difference]: Finished difference Result 275035 states and 468947 transitions. [2023-11-29 05:07:04,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:07:04,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 669 [2023-11-29 05:07:04,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:04,879 INFO L225 Difference]: With dead ends: 275035 [2023-11-29 05:07:04,879 INFO L226 Difference]: Without dead ends: 138235 [2023-11-29 05:07:05,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 667 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 05:07:05,041 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 0 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:05,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1089 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:07:05,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138235 states. [2023-11-29 05:07:16,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138235 to 138235. [2023-11-29 05:07:16,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138235 states, 114252 states have (on average 1.648636347722578) internal successors, (188360), 115069 states have internal predecessors, (188360), 23128 states have call successors, (23128), 854 states have call predecessors, (23128), 854 states have return successors, (23128), 22311 states have call predecessors, (23128), 23128 states have call successors, (23128) [2023-11-29 05:07:17,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138235 states to 138235 states and 234616 transitions. [2023-11-29 05:07:17,360 INFO L78 Accepts]: Start accepts. Automaton has 138235 states and 234616 transitions. Word has length 669 [2023-11-29 05:07:17,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:17,361 INFO L495 AbstractCegarLoop]: Abstraction has 138235 states and 234616 transitions. [2023-11-29 05:07:17,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:07:17,361 INFO L276 IsEmpty]: Start isEmpty. Operand 138235 states and 234616 transitions. [2023-11-29 05:07:17,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-11-29 05:07:17,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:17,412 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:17,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 05:07:17,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:17,613 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:07:17,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:17,614 INFO L85 PathProgramCache]: Analyzing trace with hash -194196344, now seen corresponding path program 1 times [2023-11-29 05:07:17,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:17,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683654872] [2023-11-29 05:07:17,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:17,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:17,657 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:07:17,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [357083400] [2023-11-29 05:07:17,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:17,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:17,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:17,658 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:17,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 05:07:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:18,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 1536 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:07:18,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:18,561 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:07:18,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:07:18,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:18,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683654872] [2023-11-29 05:07:18,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:07:18,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357083400] [2023-11-29 05:07:18,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357083400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:18,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:18,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:07:18,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238897600] [2023-11-29 05:07:18,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:18,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:07:18,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:18,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:07:18,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:07:18,564 INFO L87 Difference]: Start difference. First operand 138235 states and 234616 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:07:37,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:37,629 INFO L93 Difference]: Finished difference Result 414331 states and 703278 transitions. [2023-11-29 05:07:37,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:07:37,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 669 [2023-11-29 05:07:37,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:38,434 INFO L225 Difference]: With dead ends: 414331 [2023-11-29 05:07:38,434 INFO L226 Difference]: Without dead ends: 276283 [2023-11-29 05:07:38,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 667 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 05:07:38,606 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 223 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:38,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 1091 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:07:38,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276283 states. [2023-11-29 05:08:02,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276283 to 275657. [2023-11-29 05:08:02,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275657 states, 227802 states have (on average 1.6424175380374184) internal successors, (374146), 229435 states have internal predecessors, (374146), 46152 states have call successors, (46152), 1702 states have call predecessors, (46152), 1702 states have return successors, (46152), 44519 states have call predecessors, (46152), 46152 states have call successors, (46152) [2023-11-29 05:08:03,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275657 states to 275657 states and 466450 transitions. [2023-11-29 05:08:03,873 INFO L78 Accepts]: Start accepts. Automaton has 275657 states and 466450 transitions. Word has length 669 [2023-11-29 05:08:03,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:03,874 INFO L495 AbstractCegarLoop]: Abstraction has 275657 states and 466450 transitions. [2023-11-29 05:08:03,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-29 05:08:03,875 INFO L276 IsEmpty]: Start isEmpty. Operand 275657 states and 466450 transitions. [2023-11-29 05:08:03,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-11-29 05:08:03,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:03,961 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:03,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 05:08:04,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 05:08:04,162 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:04,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:04,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1038201846, now seen corresponding path program 1 times [2023-11-29 05:08:04,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:04,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040673338] [2023-11-29 05:08:04,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:04,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:04,214 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:08:04,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568582834] [2023-11-29 05:08:04,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:04,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:08:04,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:08:04,215 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:08:04,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79753863-e847-4221-be11-c2e86cc44756/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 05:08:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:04,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 1534 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:08:04,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:08:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-29 05:08:05,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:08:05,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:05,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040673338] [2023-11-29 05:08:05,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:08:05,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568582834] [2023-11-29 05:08:05,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568582834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:05,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:05,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:08:05,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379044549] [2023-11-29 05:08:05,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:05,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:08:05,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:05,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:08:05,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:08:05,988 INFO L87 Difference]: Start difference. First operand 275657 states and 466450 transitions. Second operand has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 8 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104)