./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-46.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_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/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_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-46.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/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_1dec8716-b7ea-4b7f-a26c-68313820fe6a/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 ce8bf6dec5b27745c6bfb98fc715d507cc2238369c7f83c0b6f0bf89b9d57526 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:25:49,783 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:25:49,851 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:25:49,855 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:25:49,856 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:25:49,881 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:25:49,881 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:25:49,882 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:25:49,883 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:25:49,883 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:25:49,884 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:25:49,884 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:25:49,885 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:25:49,885 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:25:49,886 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:25:49,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:25:49,887 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:25:49,887 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:25:49,888 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:25:49,888 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:25:49,888 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:25:49,889 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:25:49,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:25:49,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:25:49,890 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:25:49,891 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:25:49,891 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:25:49,892 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:25:49,892 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:25:49,892 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:25:49,893 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:25:49,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:25:49,894 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:25:49,894 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:25:49,894 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:25:49,895 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:25:49,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:25:49,895 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:25:49,895 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:25:49,895 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:25:49,896 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:25:49,896 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:25:49,896 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_1dec8716-b7ea-4b7f-a26c-68313820fe6a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce8bf6dec5b27745c6bfb98fc715d507cc2238369c7f83c0b6f0bf89b9d57526 [2023-11-29 02:25:50,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:25:50,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:25:50,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:25:50,132 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:25:50,133 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:25:50,134 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-46.i [2023-11-29 02:25:52,921 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:25:53,153 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:25:53,154 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-46.i [2023-11-29 02:25:53,171 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/data/3e8bc37f9/7085a305ccf244dc809afd0a41211130/FLAG8086ed403 [2023-11-29 02:25:53,190 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/data/3e8bc37f9/7085a305ccf244dc809afd0a41211130 [2023-11-29 02:25:53,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:25:53,203 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:25:53,204 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:25:53,204 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:25:53,209 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:25:53,210 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:25:53" (1/1) ... [2023-11-29 02:25:53,211 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@249e68bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:25:53, skipping insertion in model container [2023-11-29 02:25:53,211 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:25:53" (1/1) ... [2023-11-29 02:25:53,281 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:25:53,428 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_1dec8716-b7ea-4b7f-a26c-68313820fe6a/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-46.i[916,929] [2023-11-29 02:25:53,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:25:53,605 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:25:53,619 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_1dec8716-b7ea-4b7f-a26c-68313820fe6a/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-46.i[916,929] [2023-11-29 02:25:53,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:25:53,733 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:25:53,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:25:53 WrapperNode [2023-11-29 02:25:53,734 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:25:53,735 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:25:53,735 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:25:53,735 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:25:53,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:25:53" (1/1) ... [2023-11-29 02:25:53,767 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:25:53" (1/1) ... [2023-11-29 02:25:53,845 INFO L138 Inliner]: procedures = 26, calls = 115, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 842 [2023-11-29 02:25:53,846 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:25:53,846 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:25:53,846 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:25:53,847 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:25:53,859 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:25:53" (1/1) ... [2023-11-29 02:25:53,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:25:53" (1/1) ... [2023-11-29 02:25:53,871 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:25:53" (1/1) ... [2023-11-29 02:25:53,907 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 02:25:53,908 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:25:53" (1/1) ... [2023-11-29 02:25:53,908 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:25:53" (1/1) ... [2023-11-29 02:25:53,935 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:25:53" (1/1) ... [2023-11-29 02:25:53,943 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:25:53" (1/1) ... [2023-11-29 02:25:53,958 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:25:53" (1/1) ... [2023-11-29 02:25:53,963 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:25:53" (1/1) ... [2023-11-29 02:25:53,984 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:25:53,985 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:25:53,985 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:25:53,985 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:25:53,986 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:25:53" (1/1) ... [2023-11-29 02:25:53,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:25:54,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:25:54,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:25:54,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:25:54,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:25:54,040 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 02:25:54,040 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 02:25:54,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:25:54,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:25:54,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:25:54,180 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:25:54,182 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:25:55,215 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:25:55,311 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:25:55,311 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:25:55,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:25:55 BoogieIcfgContainer [2023-11-29 02:25:55,312 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:25:55,315 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:25:55,315 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:25:55,318 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:25:55,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:25:53" (1/3) ... [2023-11-29 02:25:55,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8d1ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:25:55, skipping insertion in model container [2023-11-29 02:25:55,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:25:53" (2/3) ... [2023-11-29 02:25:55,320 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8d1ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:25:55, skipping insertion in model container [2023-11-29 02:25:55,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:25:55" (3/3) ... [2023-11-29 02:25:55,321 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-46.i [2023-11-29 02:25:55,341 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:25:55,342 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:25:55,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:25:55,413 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;@7bdf5d21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:25:55,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:25:55,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 320 states, 215 states have (on average 1.6604651162790698) internal successors, (357), 216 states have internal predecessors, (357), 102 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-29 02:25:55,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2023-11-29 02:25:55,468 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:55,469 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:55,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:55,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:55,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1032326882, now seen corresponding path program 1 times [2023-11-29 02:25:55,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:55,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503271265] [2023-11-29 02:25:55,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:55,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:55,809 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:25:55,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482444578] [2023-11-29 02:25:55,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:55,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:25:55,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:25:55,814 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:25:55,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:25:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:56,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 02:25:56,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:25:56,392 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 02:25:56,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:25:56,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:56,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503271265] [2023-11-29 02:25:56,393 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:25:56,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482444578] [2023-11-29 02:25:56,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482444578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:56,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:56,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:25:56,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527590682] [2023-11-29 02:25:56,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:56,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:25:56,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:56,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:25:56,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:25:56,436 INFO L87 Difference]: Start difference. First operand has 320 states, 215 states have (on average 1.6604651162790698) internal successors, (357), 216 states have internal predecessors, (357), 102 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:25:56,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:56,522 INFO L93 Difference]: Finished difference Result 637 states and 1222 transitions. [2023-11-29 02:25:56,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:25:56,525 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 654 [2023-11-29 02:25:56,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:56,542 INFO L225 Difference]: With dead ends: 637 [2023-11-29 02:25:56,543 INFO L226 Difference]: Without dead ends: 318 [2023-11-29 02:25:56,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 653 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 02:25:56,555 INFO L413 NwaCegarLoop]: 547 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, 547 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 02:25:56,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 547 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:25:56,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-29 02:25:56,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2023-11-29 02:25:56,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 214 states have (on average 1.6168224299065421) internal successors, (346), 214 states have internal predecessors, (346), 102 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-29 02:25:56,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 550 transitions. [2023-11-29 02:25:56,648 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 550 transitions. Word has length 654 [2023-11-29 02:25:56,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:56,652 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 550 transitions. [2023-11-29 02:25:56,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:25:56,653 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 550 transitions. [2023-11-29 02:25:56,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2023-11-29 02:25:56,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:56,677 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:56,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:25:56,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:25:56,883 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:56,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:56,887 INFO L85 PathProgramCache]: Analyzing trace with hash 638528072, now seen corresponding path program 1 times [2023-11-29 02:25:56,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:56,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605718206] [2023-11-29 02:25:56,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:56,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:57,095 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:25:57,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53611068] [2023-11-29 02:25:57,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:57,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:25:57,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:25:57,097 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:25:57,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:25:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:57,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:25:57,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:25:57,624 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 02:25:57,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:25:57,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:57,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605718206] [2023-11-29 02:25:57,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:25:57,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53611068] [2023-11-29 02:25:57,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53611068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:57,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:57,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:25:57,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744245672] [2023-11-29 02:25:57,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:57,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:25:57,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:57,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:25:57,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:25:57,631 INFO L87 Difference]: Start difference. First operand 318 states and 550 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, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:25:57,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:57,793 INFO L93 Difference]: Finished difference Result 805 states and 1399 transitions. [2023-11-29 02:25:57,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:25:57,795 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, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 655 [2023-11-29 02:25:57,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:57,801 INFO L225 Difference]: With dead ends: 805 [2023-11-29 02:25:57,801 INFO L226 Difference]: Without dead ends: 488 [2023-11-29 02:25:57,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 653 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 02:25:57,804 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 293 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:57,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1120 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:25:57,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-29 02:25:57,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 485. [2023-11-29 02:25:57,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 349 states have (on average 1.664756446991404) internal successors, (581), 350 states have internal predecessors, (581), 133 states have call successors, (133), 2 states have call predecessors, (133), 2 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) [2023-11-29 02:25:57,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 847 transitions. [2023-11-29 02:25:57,865 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 847 transitions. Word has length 655 [2023-11-29 02:25:57,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:57,867 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 847 transitions. [2023-11-29 02:25:57,867 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, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:25:57,867 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 847 transitions. [2023-11-29 02:25:57,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2023-11-29 02:25:57,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:57,883 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:57,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:25:58,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:25:58,084 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:58,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:58,085 INFO L85 PathProgramCache]: Analyzing trace with hash 2046195954, now seen corresponding path program 1 times [2023-11-29 02:25:58,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:58,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115068384] [2023-11-29 02:25:58,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:58,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:58,171 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:25:58,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2060111123] [2023-11-29 02:25:58,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:58,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:25:58,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:25:58,174 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:25:58,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:25:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:58,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:25:58,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:25:58,661 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 02:25:58,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:25:58,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:58,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115068384] [2023-11-29 02:25:58,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:25:58,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060111123] [2023-11-29 02:25:58,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060111123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:58,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:58,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:25:58,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154455061] [2023-11-29 02:25:58,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:58,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:25:58,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:58,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:25:58,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:25:58,667 INFO L87 Difference]: Start difference. First operand 485 states and 847 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, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:25:58,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:58,798 INFO L93 Difference]: Finished difference Result 1339 states and 2350 transitions. [2023-11-29 02:25:58,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:25:58,799 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, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 657 [2023-11-29 02:25:58,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:58,810 INFO L225 Difference]: With dead ends: 1339 [2023-11-29 02:25:58,810 INFO L226 Difference]: Without dead ends: 855 [2023-11-29 02:25:58,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 655 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 02:25:58,814 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 341 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:58,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 1050 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:25:58,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2023-11-29 02:25:58,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 852. [2023-11-29 02:25:58,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 642 states have (on average 1.6884735202492211) internal successors, (1084), 645 states have internal predecessors, (1084), 205 states have call successors, (205), 4 states have call predecessors, (205), 4 states have return successors, (205), 202 states have call predecessors, (205), 205 states have call successors, (205) [2023-11-29 02:25:58,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1494 transitions. [2023-11-29 02:25:58,909 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1494 transitions. Word has length 657 [2023-11-29 02:25:58,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:58,911 INFO L495 AbstractCegarLoop]: Abstraction has 852 states and 1494 transitions. [2023-11-29 02:25:58,912 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, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:25:58,912 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1494 transitions. [2023-11-29 02:25:58,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2023-11-29 02:25:58,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:58,923 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:58,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:25:59,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 02:25:59,124 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:59,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:59,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1149244581, now seen corresponding path program 1 times [2023-11-29 02:25:59,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:59,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030172776] [2023-11-29 02:25:59,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:59,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:59,205 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:25:59,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1677708730] [2023-11-29 02:25:59,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:59,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:25:59,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:25:59,207 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:25:59,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:25:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:59,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:25:59,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:25:59,690 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 02:25:59,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:25:59,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:59,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030172776] [2023-11-29 02:25:59,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:25:59,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677708730] [2023-11-29 02:25:59,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677708730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:59,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:59,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:25:59,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137367041] [2023-11-29 02:25:59,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:59,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:25:59,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:59,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:25:59,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:25:59,695 INFO L87 Difference]: Start difference. First operand 852 states and 1494 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, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:25:59,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:59,911 INFO L93 Difference]: Finished difference Result 2415 states and 4248 transitions. [2023-11-29 02:25:59,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:25:59,912 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, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 658 [2023-11-29 02:25:59,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:59,925 INFO L225 Difference]: With dead ends: 2415 [2023-11-29 02:25:59,926 INFO L226 Difference]: Without dead ends: 1564 [2023-11-29 02:25:59,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 656 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 02:25:59,930 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 336 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:59,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 1226 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:25:59,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2023-11-29 02:26:00,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1558. [2023-11-29 02:26:00,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1228 states have (on average 1.713355048859935) internal successors, (2104), 1235 states have internal predecessors, (2104), 321 states have call successors, (321), 8 states have call predecessors, (321), 8 states have return successors, (321), 314 states have call predecessors, (321), 321 states have call successors, (321) [2023-11-29 02:26:00,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2746 transitions. [2023-11-29 02:26:00,053 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2746 transitions. Word has length 658 [2023-11-29 02:26:00,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:26:00,055 INFO L495 AbstractCegarLoop]: Abstraction has 1558 states and 2746 transitions. [2023-11-29 02:26:00,055 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, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:26:00,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2746 transitions. [2023-11-29 02:26:00,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2023-11-29 02:26:00,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:26:00,064 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:00,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:26:00,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:00,265 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:26:00,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:26:00,266 INFO L85 PathProgramCache]: Analyzing trace with hash -2143938279, now seen corresponding path program 1 times [2023-11-29 02:26:00,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:26:00,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820228101] [2023-11-29 02:26:00,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:00,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:26:00,347 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:26:00,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913644914] [2023-11-29 02:26:00,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:00,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:00,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:26:00,349 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:26:00,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:26:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:00,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:26:00,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:26:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 02:26:00,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:26:00,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:26:00,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820228101] [2023-11-29 02:26:00,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:26:00,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913644914] [2023-11-29 02:26:00,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913644914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:26:00,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:26:00,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:26:00,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894242256] [2023-11-29 02:26:00,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:26:00,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:26:00,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:26:00,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:26:00,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:26:00,972 INFO L87 Difference]: Start difference. First operand 1558 states and 2746 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:26:01,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:26:01,346 INFO L93 Difference]: Finished difference Result 7152 states and 12614 transitions. [2023-11-29 02:26:01,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:26:01,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 658 [2023-11-29 02:26:01,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:26:01,388 INFO L225 Difference]: With dead ends: 7152 [2023-11-29 02:26:01,388 INFO L226 Difference]: Without dead ends: 5595 [2023-11-29 02:26:01,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 656 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 02:26:01,396 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 1186 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:26:01,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 2026 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:26:01,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2023-11-29 02:26:01,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 4362. [2023-11-29 02:26:01,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4362 states, 3856 states have (on average 1.7676348547717842) internal successors, (6816), 3871 states have internal predecessors, (6816), 489 states have call successors, (489), 16 states have call predecessors, (489), 16 states have return successors, (489), 474 states have call predecessors, (489), 489 states have call successors, (489) [2023-11-29 02:26:01,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4362 states to 4362 states and 7794 transitions. [2023-11-29 02:26:01,744 INFO L78 Accepts]: Start accepts. Automaton has 4362 states and 7794 transitions. Word has length 658 [2023-11-29 02:26:01,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:26:01,745 INFO L495 AbstractCegarLoop]: Abstraction has 4362 states and 7794 transitions. [2023-11-29 02:26:01,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:26:01,746 INFO L276 IsEmpty]: Start isEmpty. Operand 4362 states and 7794 transitions. [2023-11-29 02:26:01,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-11-29 02:26:01,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:26:01,761 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:01,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 02:26:01,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:01,962 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:26:01,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:26:01,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1846862528, now seen corresponding path program 1 times [2023-11-29 02:26:01,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:26:01,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523428900] [2023-11-29 02:26:01,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:01,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:26:02,038 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:26:02,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [58982786] [2023-11-29 02:26:02,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:02,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:02,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:26:02,040 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:26:02,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:26:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:02,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:26:02,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:26:02,676 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 02:26:02,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:26:02,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:26:02,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523428900] [2023-11-29 02:26:02,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:26:02,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58982786] [2023-11-29 02:26:02,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58982786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:26:02,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:26:02,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:26:02,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965281626] [2023-11-29 02:26:02,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:26:02,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:26:02,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:26:02,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:26:02,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:26:02,681 INFO L87 Difference]: Start difference. First operand 4362 states and 7794 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:26:03,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:26:03,141 INFO L93 Difference]: Finished difference Result 10872 states and 19221 transitions. [2023-11-29 02:26:03,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:26:03,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 659 [2023-11-29 02:26:03,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:26:03,187 INFO L225 Difference]: With dead ends: 10872 [2023-11-29 02:26:03,187 INFO L226 Difference]: Without dead ends: 6511 [2023-11-29 02:26:03,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 656 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 02:26:03,199 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 784 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:26:03,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 1658 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:26:03,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6511 states. [2023-11-29 02:26:03,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6511 to 5116. [2023-11-29 02:26:03,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5116 states, 4273 states have (on average 1.7245494968406272) internal successors, (7369), 4296 states have internal predecessors, (7369), 810 states have call successors, (810), 32 states have call predecessors, (810), 32 states have return successors, (810), 787 states have call predecessors, (810), 810 states have call successors, (810) [2023-11-29 02:26:03,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5116 states to 5116 states and 8989 transitions. [2023-11-29 02:26:03,555 INFO L78 Accepts]: Start accepts. Automaton has 5116 states and 8989 transitions. Word has length 659 [2023-11-29 02:26:03,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:26:03,556 INFO L495 AbstractCegarLoop]: Abstraction has 5116 states and 8989 transitions. [2023-11-29 02:26:03,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:26:03,556 INFO L276 IsEmpty]: Start isEmpty. Operand 5116 states and 8989 transitions. [2023-11-29 02:26:03,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-11-29 02:26:03,566 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:26:03,566 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:03,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:26:03,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:03,767 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:26:03,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:26:03,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1860196310, now seen corresponding path program 1 times [2023-11-29 02:26:03,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:26:03,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572006439] [2023-11-29 02:26:03,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:03,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:26:03,833 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:26:03,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054841546] [2023-11-29 02:26:03,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:03,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:03,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:26:03,835 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:26:03,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:26:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:04,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:26:04,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:26:04,294 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 02:26:04,294 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:26:04,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:26:04,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572006439] [2023-11-29 02:26:04,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:26:04,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054841546] [2023-11-29 02:26:04,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054841546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:26:04,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:26:04,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:26:04,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525284460] [2023-11-29 02:26:04,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:26:04,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:26:04,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:26:04,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:26:04,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:26:04,298 INFO L87 Difference]: Start difference. First operand 5116 states and 8989 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, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:26:04,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:26:04,443 INFO L93 Difference]: Finished difference Result 10231 states and 17977 transitions. [2023-11-29 02:26:04,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:26:04,444 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, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 659 [2023-11-29 02:26:04,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:26:04,470 INFO L225 Difference]: With dead ends: 10231 [2023-11-29 02:26:04,470 INFO L226 Difference]: Without dead ends: 5116 [2023-11-29 02:26:04,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 657 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 02:26:04,481 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 0 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1085 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 02:26:04,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1085 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:26:04,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5116 states. [2023-11-29 02:26:04,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5116 to 5116. [2023-11-29 02:26:04,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5116 states, 4273 states have (on average 1.7226772759185585) internal successors, (7361), 4296 states have internal predecessors, (7361), 810 states have call successors, (810), 32 states have call predecessors, (810), 32 states have return successors, (810), 787 states have call predecessors, (810), 810 states have call successors, (810) [2023-11-29 02:26:04,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5116 states to 5116 states and 8981 transitions. [2023-11-29 02:26:04,759 INFO L78 Accepts]: Start accepts. Automaton has 5116 states and 8981 transitions. Word has length 659 [2023-11-29 02:26:04,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:26:04,760 INFO L495 AbstractCegarLoop]: Abstraction has 5116 states and 8981 transitions. [2023-11-29 02:26:04,760 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, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:26:04,761 INFO L276 IsEmpty]: Start isEmpty. Operand 5116 states and 8981 transitions. [2023-11-29 02:26:04,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-11-29 02:26:04,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:26:04,774 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:04,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 02:26:04,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:04,975 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:26:04,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:26:04,975 INFO L85 PathProgramCache]: Analyzing trace with hash 19667135, now seen corresponding path program 1 times [2023-11-29 02:26:04,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:26:04,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881893732] [2023-11-29 02:26:04,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:04,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:26:05,046 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:26:05,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1121247713] [2023-11-29 02:26:05,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:05,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:05,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:26:05,048 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:26:05,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:26:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:05,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:26:05,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:26:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 02:26:05,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:26:05,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:26:05,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881893732] [2023-11-29 02:26:05,544 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:26:05,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121247713] [2023-11-29 02:26:05,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121247713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:26:05,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:26:05,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:26:05,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535964883] [2023-11-29 02:26:05,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:26:05,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:26:05,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:26:05,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:26:05,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:26:05,548 INFO L87 Difference]: Start difference. First operand 5116 states and 8981 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, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:26:05,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:26:05,912 INFO L93 Difference]: Finished difference Result 12571 states and 22094 transitions. [2023-11-29 02:26:05,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:26:05,913 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, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 659 [2023-11-29 02:26:05,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:26:05,948 INFO L225 Difference]: With dead ends: 12571 [2023-11-29 02:26:05,948 INFO L226 Difference]: Without dead ends: 7456 [2023-11-29 02:26:05,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 657 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 02:26:05,963 INFO L413 NwaCegarLoop]: 730 mSDtfsCounter, 343 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:26:05,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 1250 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:26:05,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7456 states. [2023-11-29 02:26:06,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7456 to 5100. [2023-11-29 02:26:06,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5100 states, 4257 states have (on average 1.7253934695795161) internal successors, (7345), 4280 states have internal predecessors, (7345), 810 states have call successors, (810), 32 states have call predecessors, (810), 32 states have return successors, (810), 787 states have call predecessors, (810), 810 states have call successors, (810) [2023-11-29 02:26:06,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5100 states to 5100 states and 8965 transitions. [2023-11-29 02:26:06,358 INFO L78 Accepts]: Start accepts. Automaton has 5100 states and 8965 transitions. Word has length 659 [2023-11-29 02:26:06,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:26:06,359 INFO L495 AbstractCegarLoop]: Abstraction has 5100 states and 8965 transitions. [2023-11-29 02:26:06,360 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, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:26:06,360 INFO L276 IsEmpty]: Start isEmpty. Operand 5100 states and 8965 transitions. [2023-11-29 02:26:06,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-11-29 02:26:06,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:26:06,375 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:06,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 02:26:06,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:06,576 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:26:06,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:26:06,576 INFO L85 PathProgramCache]: Analyzing trace with hash 858700797, now seen corresponding path program 1 times [2023-11-29 02:26:06,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:26:06,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702793374] [2023-11-29 02:26:06,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:06,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:26:06,644 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:26:06,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [317534899] [2023-11-29 02:26:06,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:06,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:06,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:26:06,646 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:26:06,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:26:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:07,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:26:07,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:26:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 02:26:07,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:26:07,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:26:07,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702793374] [2023-11-29 02:26:07,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:26:07,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317534899] [2023-11-29 02:26:07,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317534899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:26:07,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:26:07,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:26:07,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710521058] [2023-11-29 02:26:07,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:26:07,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:26:07,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:26:07,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:26:07,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:26:07,680 INFO L87 Difference]: Start difference. First operand 5100 states and 8965 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, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:26:08,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:26:08,342 INFO L93 Difference]: Finished difference Result 20397 states and 35857 transitions. [2023-11-29 02:26:08,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:26:08,343 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, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 659 [2023-11-29 02:26:08,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:26:08,390 INFO L225 Difference]: With dead ends: 20397 [2023-11-29 02:26:08,390 INFO L226 Difference]: Without dead ends: 15298 [2023-11-29 02:26:08,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 656 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 02:26:08,404 INFO L413 NwaCegarLoop]: 988 mSDtfsCounter, 758 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:26:08,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 1863 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:26:08,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15298 states. [2023-11-29 02:26:09,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15298 to 10197. [2023-11-29 02:26:09,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10197 states, 8512 states have (on average 1.7218045112781954) internal successors, (14656), 8558 states have internal predecessors, (14656), 1620 states have call successors, (1620), 64 states have call predecessors, (1620), 64 states have return successors, (1620), 1574 states have call predecessors, (1620), 1620 states have call successors, (1620) [2023-11-29 02:26:09,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10197 states to 10197 states and 17896 transitions. [2023-11-29 02:26:09,301 INFO L78 Accepts]: Start accepts. Automaton has 10197 states and 17896 transitions. Word has length 659 [2023-11-29 02:26:09,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:26:09,302 INFO L495 AbstractCegarLoop]: Abstraction has 10197 states and 17896 transitions. [2023-11-29 02:26:09,302 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, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:26:09,302 INFO L276 IsEmpty]: Start isEmpty. Operand 10197 states and 17896 transitions. [2023-11-29 02:26:09,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-11-29 02:26:09,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:26:09,346 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:09,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 02:26:09,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:09,547 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:26:09,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:26:09,547 INFO L85 PathProgramCache]: Analyzing trace with hash 999249407, now seen corresponding path program 1 times [2023-11-29 02:26:09,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:26:09,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508176943] [2023-11-29 02:26:09,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:09,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:26:09,614 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:26:09,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1632193007] [2023-11-29 02:26:09,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:09,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:09,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:26:09,615 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:26:09,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 02:26:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:09,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:26:09,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:26:09,998 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 02:26:09,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:26:09,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:26:09,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508176943] [2023-11-29 02:26:09,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:26:09,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632193007] [2023-11-29 02:26:09,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632193007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:26:09,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:26:09,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:26:09,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855881729] [2023-11-29 02:26:10,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:26:10,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:26:10,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:26:10,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:26:10,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:26:10,002 INFO L87 Difference]: Start difference. First operand 10197 states and 17896 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, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:26:10,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:26:10,284 INFO L93 Difference]: Finished difference Result 20393 states and 35791 transitions. [2023-11-29 02:26:10,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:26:10,285 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, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 659 [2023-11-29 02:26:10,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:26:10,305 INFO L225 Difference]: With dead ends: 20393 [2023-11-29 02:26:10,305 INFO L226 Difference]: Without dead ends: 10197 [2023-11-29 02:26:10,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 657 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 02:26:10,320 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 0 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:26:10,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1084 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:26:10,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10197 states. [2023-11-29 02:26:10,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10197 to 10197. [2023-11-29 02:26:10,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10197 states, 8512 states have (on average 1.7199248120300752) internal successors, (14640), 8558 states have internal predecessors, (14640), 1620 states have call successors, (1620), 64 states have call predecessors, (1620), 64 states have return successors, (1620), 1574 states have call predecessors, (1620), 1620 states have call successors, (1620) [2023-11-29 02:26:10,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10197 states to 10197 states and 17880 transitions. [2023-11-29 02:26:10,857 INFO L78 Accepts]: Start accepts. Automaton has 10197 states and 17880 transitions. Word has length 659 [2023-11-29 02:26:10,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:26:10,858 INFO L495 AbstractCegarLoop]: Abstraction has 10197 states and 17880 transitions. [2023-11-29 02:26:10,858 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, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:26:10,859 INFO L276 IsEmpty]: Start isEmpty. Operand 10197 states and 17880 transitions. [2023-11-29 02:26:10,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2023-11-29 02:26:10,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:26:10,873 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:10,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 02:26:11,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 02:26:11,074 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:26:11,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:26:11,075 INFO L85 PathProgramCache]: Analyzing trace with hash -202782967, now seen corresponding path program 1 times [2023-11-29 02:26:11,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:26:11,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437719614] [2023-11-29 02:26:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:11,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:26:11,145 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:26:11,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125025503] [2023-11-29 02:26:11,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:11,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:11,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:26:11,147 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:26:11,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 02:26:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:11,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:26:11,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:26:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 02:26:12,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:26:12,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:26:12,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437719614] [2023-11-29 02:26:12,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:26:12,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125025503] [2023-11-29 02:26:12,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125025503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:26:12,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:26:12,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:26:12,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122159501] [2023-11-29 02:26:12,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:26:12,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:26:12,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:26:12,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:26:12,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:26:12,331 INFO L87 Difference]: Start difference. First operand 10197 states and 17880 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:26:13,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:26:13,607 INFO L93 Difference]: Finished difference Result 22701 states and 39540 transitions. [2023-11-29 02:26:13,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:26:13,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 660 [2023-11-29 02:26:13,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:26:13,645 INFO L225 Difference]: With dead ends: 22701 [2023-11-29 02:26:13,645 INFO L226 Difference]: Without dead ends: 12505 [2023-11-29 02:26:13,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 655 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 02:26:13,667 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 1953 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1953 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:26:13,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1953 Valid, 2148 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:26:13,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12505 states. [2023-11-29 02:26:14,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12505 to 9775. [2023-11-29 02:26:14,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9775 states, 8507 states have (on average 1.7405665922181732) internal successors, (14807), 8541 states have internal predecessors, (14807), 1215 states have call successors, (1215), 52 states have call predecessors, (1215), 52 states have return successors, (1215), 1181 states have call predecessors, (1215), 1215 states have call successors, (1215) [2023-11-29 02:26:14,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9775 states to 9775 states and 17237 transitions. [2023-11-29 02:26:14,218 INFO L78 Accepts]: Start accepts. Automaton has 9775 states and 17237 transitions. Word has length 660 [2023-11-29 02:26:14,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:26:14,218 INFO L495 AbstractCegarLoop]: Abstraction has 9775 states and 17237 transitions. [2023-11-29 02:26:14,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:26:14,218 INFO L276 IsEmpty]: Start isEmpty. Operand 9775 states and 17237 transitions. [2023-11-29 02:26:14,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2023-11-29 02:26:14,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:26:14,233 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:14,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 02:26:14,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 02:26:14,434 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:26:14,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:26:14,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1486160775, now seen corresponding path program 1 times [2023-11-29 02:26:14,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:26:14,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923771204] [2023-11-29 02:26:14,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:14,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:26:14,536 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:26:14,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971869391] [2023-11-29 02:26:14,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:14,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:14,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:26:14,537 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:26:14,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 02:26:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:14,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:26:14,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:26:15,829 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 02:26:15,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:26:15,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:26:15,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923771204] [2023-11-29 02:26:15,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:26:15,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971869391] [2023-11-29 02:26:15,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971869391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:26:15,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:26:15,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:26:15,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182228086] [2023-11-29 02:26:15,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:26:15,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:26:15,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:26:15,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:26:15,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:26:15,832 INFO L87 Difference]: Start difference. First operand 9775 states and 17237 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:26:17,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:26:17,126 INFO L93 Difference]: Finished difference Result 24793 states and 43561 transitions. [2023-11-29 02:26:17,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:26:17,126 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 660 [2023-11-29 02:26:17,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:26:17,148 INFO L225 Difference]: With dead ends: 24793 [2023-11-29 02:26:17,148 INFO L226 Difference]: Without dead ends: 15019 [2023-11-29 02:26:17,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 656 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:26:17,157 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 1183 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:26:17,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1183 Valid, 1920 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 02:26:17,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15019 states. [2023-11-29 02:26:17,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15019 to 13031. [2023-11-29 02:26:17,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13031 states, 11567 states have (on average 1.7400363101927898) internal successors, (20127), 11609 states have internal predecessors, (20127), 1399 states have call successors, (1399), 64 states have call predecessors, (1399), 64 states have return successors, (1399), 1357 states have call predecessors, (1399), 1399 states have call successors, (1399) [2023-11-29 02:26:17,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13031 states to 13031 states and 22925 transitions. [2023-11-29 02:26:17,902 INFO L78 Accepts]: Start accepts. Automaton has 13031 states and 22925 transitions. Word has length 660 [2023-11-29 02:26:17,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:26:17,903 INFO L495 AbstractCegarLoop]: Abstraction has 13031 states and 22925 transitions. [2023-11-29 02:26:17,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:26:17,903 INFO L276 IsEmpty]: Start isEmpty. Operand 13031 states and 22925 transitions. [2023-11-29 02:26:17,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2023-11-29 02:26:17,922 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:26:17,923 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:17,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 02:26:18,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 02:26:18,132 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:26:18,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:26:18,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1919889861, now seen corresponding path program 1 times [2023-11-29 02:26:18,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:26:18,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561002401] [2023-11-29 02:26:18,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:18,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:26:18,195 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:26:18,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1905465639] [2023-11-29 02:26:18,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:18,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:18,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:26:18,196 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:26:18,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 02:26:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:18,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:26:18,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:26:18,645 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 02:26:18,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:26:18,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:26:18,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561002401] [2023-11-29 02:26:18,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:26:18,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905465639] [2023-11-29 02:26:18,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905465639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:26:18,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:26:18,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:26:18,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120019216] [2023-11-29 02:26:18,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:26:18,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:26:18,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:26:18,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:26:18,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:26:18,648 INFO L87 Difference]: Start difference. First operand 13031 states and 22925 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:26:19,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:26:19,986 INFO L93 Difference]: Finished difference Result 51751 states and 90839 transitions. [2023-11-29 02:26:19,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:26:19,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 660 [2023-11-29 02:26:19,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:26:20,043 INFO L225 Difference]: With dead ends: 51751 [2023-11-29 02:26:20,043 INFO L226 Difference]: Without dead ends: 38721 [2023-11-29 02:26:20,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 661 GetRequests, 658 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 02:26:20,060 INFO L413 NwaCegarLoop]: 730 mSDtfsCounter, 923 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:26:20,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 2062 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:26:20,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38721 states. [2023-11-29 02:26:21,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38721 to 36419. [2023-11-29 02:26:21,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36419 states, 32292 states have (on average 1.7404930013625666) internal successors, (56204), 32424 states have internal predecessors, (56204), 3934 states have call successors, (3934), 192 states have call predecessors, (3934), 192 states have return successors, (3934), 3802 states have call predecessors, (3934), 3934 states have call successors, (3934) [2023-11-29 02:26:21,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36419 states to 36419 states and 64072 transitions. [2023-11-29 02:26:21,774 INFO L78 Accepts]: Start accepts. Automaton has 36419 states and 64072 transitions. Word has length 660 [2023-11-29 02:26:21,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:26:21,775 INFO L495 AbstractCegarLoop]: Abstraction has 36419 states and 64072 transitions. [2023-11-29 02:26:21,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:26:21,775 INFO L276 IsEmpty]: Start isEmpty. Operand 36419 states and 64072 transitions. [2023-11-29 02:26:21,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2023-11-29 02:26:21,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:26:21,803 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:21,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 02:26:22,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 02:26:22,004 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:26:22,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:26:22,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2138744579, now seen corresponding path program 1 times [2023-11-29 02:26:22,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:26:22,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316761365] [2023-11-29 02:26:22,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:22,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:26:22,079 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:26:22,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984532826] [2023-11-29 02:26:22,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:22,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:22,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:26:22,082 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:26:22,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 02:26:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:22,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:26:22,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:26:22,996 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 7751 proven. 228 refuted. 0 times theorem prover too weak. 12625 trivial. 0 not checked. [2023-11-29 02:26:22,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:26:23,433 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 75 proven. 228 refuted. 0 times theorem prover too weak. 20301 trivial. 0 not checked. [2023-11-29 02:26:23,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:26:23,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316761365] [2023-11-29 02:26:23,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:26:23,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984532826] [2023-11-29 02:26:23,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984532826] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:26:23,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:26:23,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 02:26:23,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610375847] [2023-11-29 02:26:23,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:26:23,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:26:23,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:26:23,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:26:23,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:26:23,438 INFO L87 Difference]: Start difference. First operand 36419 states and 64072 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (178), 2 states have call predecessors, (178), 4 states have return successors, (179), 2 states have call predecessors, (179), 2 states have call successors, (179) [2023-11-29 02:26:24,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:26:24,722 INFO L93 Difference]: Finished difference Result 61637 states and 107855 transitions. [2023-11-29 02:26:24,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 02:26:24,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (178), 2 states have call predecessors, (178), 4 states have return successors, (179), 2 states have call predecessors, (179), 2 states have call successors, (179) Word has length 660 [2023-11-29 02:26:24,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:26:24,763 INFO L225 Difference]: With dead ends: 61637 [2023-11-29 02:26:24,763 INFO L226 Difference]: Without dead ends: 25155 [2023-11-29 02:26:24,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1322 GetRequests, 1312 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 02:26:24,794 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 551 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:26:24,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1060 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:26:24,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25155 states. [2023-11-29 02:26:26,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25155 to 24827. [2023-11-29 02:26:26,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24827 states, 21852 states have (on average 1.7153578619805967) internal successors, (37484), 21936 states have internal predecessors, (37484), 2798 states have call successors, (2798), 176 states have call predecessors, (2798), 176 states have return successors, (2798), 2714 states have call predecessors, (2798), 2798 states have call successors, (2798) [2023-11-29 02:26:26,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24827 states to 24827 states and 43080 transitions. [2023-11-29 02:26:26,241 INFO L78 Accepts]: Start accepts. Automaton has 24827 states and 43080 transitions. Word has length 660 [2023-11-29 02:26:26,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:26:26,242 INFO L495 AbstractCegarLoop]: Abstraction has 24827 states and 43080 transitions. [2023-11-29 02:26:26,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (178), 2 states have call predecessors, (178), 4 states have return successors, (179), 2 states have call predecessors, (179), 2 states have call successors, (179) [2023-11-29 02:26:26,242 INFO L276 IsEmpty]: Start isEmpty. Operand 24827 states and 43080 transitions. [2023-11-29 02:26:26,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2023-11-29 02:26:26,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:26:26,254 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:26,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 02:26:26,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 02:26:26,455 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:26:26,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:26:26,455 INFO L85 PathProgramCache]: Analyzing trace with hash -424881783, now seen corresponding path program 1 times [2023-11-29 02:26:26,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:26:26,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470536192] [2023-11-29 02:26:26,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:26,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:26:26,510 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:26:26,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1159930804] [2023-11-29 02:26:26,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:26,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:26,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:26:26,511 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:26:26,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 02:26:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:26,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:26:26,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:26:27,016 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 02:26:27,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:26:27,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:26:27,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470536192] [2023-11-29 02:26:27,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:26:27,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159930804] [2023-11-29 02:26:27,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159930804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:26:27,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:26:27,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:26:27,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457909534] [2023-11-29 02:26:27,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:26:27,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:26:27,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:26:27,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:26:27,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:26:27,019 INFO L87 Difference]: Start difference. First operand 24827 states and 43080 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:26:28,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:26:28,966 INFO L93 Difference]: Finished difference Result 66435 states and 114836 transitions. [2023-11-29 02:26:28,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:26:28,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 660 [2023-11-29 02:26:28,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:26:29,049 INFO L225 Difference]: With dead ends: 66435 [2023-11-29 02:26:29,050 INFO L226 Difference]: Without dead ends: 41609 [2023-11-29 02:26:29,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 658 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 02:26:29,081 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 483 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:26:29,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 1276 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:26:29,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41609 states. [2023-11-29 02:26:31,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41609 to 41607. [2023-11-29 02:26:31,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41607 states, 35742 states have (on average 1.6870908175256) internal successors, (60300), 35906 states have internal predecessors, (60300), 5512 states have call successors, (5512), 352 states have call predecessors, (5512), 352 states have return successors, (5512), 5348 states have call predecessors, (5512), 5512 states have call successors, (5512) [2023-11-29 02:26:31,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41607 states to 41607 states and 71324 transitions. [2023-11-29 02:26:31,643 INFO L78 Accepts]: Start accepts. Automaton has 41607 states and 71324 transitions. Word has length 660 [2023-11-29 02:26:31,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:26:31,644 INFO L495 AbstractCegarLoop]: Abstraction has 41607 states and 71324 transitions. [2023-11-29 02:26:31,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:26:31,644 INFO L276 IsEmpty]: Start isEmpty. Operand 41607 states and 71324 transitions. [2023-11-29 02:26:31,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2023-11-29 02:26:31,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:26:31,663 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:31,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 02:26:31,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 02:26:31,864 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:26:31,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:26:31,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1498346251, now seen corresponding path program 1 times [2023-11-29 02:26:31,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:26:31,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272676448] [2023-11-29 02:26:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:31,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:26:31,911 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:26:31,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319936308] [2023-11-29 02:26:31,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:31,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:31,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:26:31,913 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:26:31,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 02:26:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:32,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:26:32,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:26:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 10391 proven. 156 refuted. 0 times theorem prover too weak. 10057 trivial. 0 not checked. [2023-11-29 02:26:32,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:26:33,171 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 147 proven. 156 refuted. 0 times theorem prover too weak. 20301 trivial. 0 not checked. [2023-11-29 02:26:33,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:26:33,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272676448] [2023-11-29 02:26:33,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:26:33,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319936308] [2023-11-29 02:26:33,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319936308] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:26:33,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:26:33,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 02:26:33,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137400835] [2023-11-29 02:26:33,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:26:33,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:26:33,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:26:33,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:26:33,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:26:33,176 INFO L87 Difference]: Start difference. First operand 41607 states and 71324 transitions. Second operand has 8 states, 8 states have (on average 25.875) internal successors, (207), 8 states have internal predecessors, (207), 3 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 3 states have call predecessors, (155), 3 states have call successors, (155) [2023-11-29 02:26:34,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:26:34,508 INFO L93 Difference]: Finished difference Result 64561 states and 110528 transitions. [2023-11-29 02:26:34,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 02:26:34,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 25.875) internal successors, (207), 8 states have internal predecessors, (207), 3 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 3 states have call predecessors, (155), 3 states have call successors, (155) Word has length 660 [2023-11-29 02:26:34,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:26:34,546 INFO L225 Difference]: With dead ends: 64561 [2023-11-29 02:26:34,546 INFO L226 Difference]: Without dead ends: 22955 [2023-11-29 02:26:34,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1322 GetRequests, 1312 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:26:34,585 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 629 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:26:34,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1067 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:26:34,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22955 states. [2023-11-29 02:26:35,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22955 to 22699. [2023-11-29 02:26:35,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22699 states, 19268 states have (on average 1.6722545152584596) internal successors, (32221), 19346 states have internal predecessors, (32221), 3242 states have call successors, (3242), 188 states have call predecessors, (3242), 188 states have return successors, (3242), 3164 states have call predecessors, (3242), 3242 states have call successors, (3242) [2023-11-29 02:26:35,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22699 states to 22699 states and 38705 transitions. [2023-11-29 02:26:35,985 INFO L78 Accepts]: Start accepts. Automaton has 22699 states and 38705 transitions. Word has length 660 [2023-11-29 02:26:35,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:26:35,985 INFO L495 AbstractCegarLoop]: Abstraction has 22699 states and 38705 transitions. [2023-11-29 02:26:35,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.875) internal successors, (207), 8 states have internal predecessors, (207), 3 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 3 states have call predecessors, (155), 3 states have call successors, (155) [2023-11-29 02:26:35,985 INFO L276 IsEmpty]: Start isEmpty. Operand 22699 states and 38705 transitions. [2023-11-29 02:26:35,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2023-11-29 02:26:35,995 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:26:35,995 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:36,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 02:26:36,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 02:26:36,196 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:26:36,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:26:36,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1479741287, now seen corresponding path program 1 times [2023-11-29 02:26:36,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:26:36,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97936474] [2023-11-29 02:26:36,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:36,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:26:36,246 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:26:36,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009928906] [2023-11-29 02:26:36,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:36,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:36,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:26:36,248 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:26:36,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 02:26:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:36,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:26:36,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:26:36,962 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 10097 proven. 177 refuted. 0 times theorem prover too weak. 10330 trivial. 0 not checked. [2023-11-29 02:26:36,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:26:37,291 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 126 proven. 177 refuted. 0 times theorem prover too weak. 20301 trivial. 0 not checked. [2023-11-29 02:26:37,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:26:37,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97936474] [2023-11-29 02:26:37,291 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:26:37,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009928906] [2023-11-29 02:26:37,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009928906] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:26:37,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:26:37,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 02:26:37,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340624512] [2023-11-29 02:26:37,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:26:37,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:26:37,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:26:37,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:26:37,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:26:37,296 INFO L87 Difference]: Start difference. First operand 22699 states and 38705 transitions. Second operand has 10 states, 10 states have (on average 23.2) internal successors, (232), 10 states have internal predecessors, (232), 3 states have call successors, (161), 2 states have call predecessors, (161), 4 states have return successors, (162), 3 states have call predecessors, (162), 3 states have call successors, (162) [2023-11-29 02:26:42,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:26:42,538 INFO L93 Difference]: Finished difference Result 88203 states and 149615 transitions. [2023-11-29 02:26:42,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 02:26:42,539 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.2) internal successors, (232), 10 states have internal predecessors, (232), 3 states have call successors, (161), 2 states have call predecessors, (161), 4 states have return successors, (162), 3 states have call predecessors, (162), 3 states have call successors, (162) Word has length 661 [2023-11-29 02:26:42,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:26:42,676 INFO L225 Difference]: With dead ends: 88203 [2023-11-29 02:26:42,676 INFO L226 Difference]: Without dead ends: 65505 [2023-11-29 02:26:42,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1343 GetRequests, 1314 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=271, Invalid=659, Unknown=0, NotChecked=0, Total=930 [2023-11-29 02:26:42,714 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 1454 mSDsluCounter, 2051 mSDsCounter, 0 mSdLazyCounter, 1719 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 2750 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 1719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:26:42,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 2750 Invalid, 2232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 1719 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 02:26:42,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65505 states. [2023-11-29 02:26:47,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65505 to 64673. [2023-11-29 02:26:47,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64673 states, 54412 states have (on average 1.6600933617584357) internal successors, (90329), 54644 states have internal predecessors, (90329), 9668 states have call successors, (9668), 592 states have call predecessors, (9668), 592 states have return successors, (9668), 9436 states have call predecessors, (9668), 9668 states have call successors, (9668) [2023-11-29 02:26:47,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64673 states to 64673 states and 109665 transitions. [2023-11-29 02:26:47,476 INFO L78 Accepts]: Start accepts. Automaton has 64673 states and 109665 transitions. Word has length 661 [2023-11-29 02:26:47,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:26:47,476 INFO L495 AbstractCegarLoop]: Abstraction has 64673 states and 109665 transitions. [2023-11-29 02:26:47,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.2) internal successors, (232), 10 states have internal predecessors, (232), 3 states have call successors, (161), 2 states have call predecessors, (161), 4 states have return successors, (162), 3 states have call predecessors, (162), 3 states have call successors, (162) [2023-11-29 02:26:47,477 INFO L276 IsEmpty]: Start isEmpty. Operand 64673 states and 109665 transitions. [2023-11-29 02:26:47,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2023-11-29 02:26:47,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:26:47,495 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:47,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 02:26:47,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 02:26:47,696 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:26:47,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:26:47,696 INFO L85 PathProgramCache]: Analyzing trace with hash -563236461, now seen corresponding path program 1 times [2023-11-29 02:26:47,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:26:47,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118247978] [2023-11-29 02:26:47,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:47,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:26:47,752 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:26:47,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554376693] [2023-11-29 02:26:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:47,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:47,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:26:47,753 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:26:47,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 02:26:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:48,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:26:48,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:26:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 7541 proven. 231 refuted. 0 times theorem prover too weak. 12832 trivial. 0 not checked. [2023-11-29 02:26:48,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:26:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 72 proven. 231 refuted. 0 times theorem prover too weak. 20301 trivial. 0 not checked. [2023-11-29 02:26:48,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:26:48,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118247978] [2023-11-29 02:26:48,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:26:48,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554376693] [2023-11-29 02:26:48,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554376693] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:26:48,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:26:48,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 02:26:48,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279672596] [2023-11-29 02:26:48,984 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:26:48,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:26:48,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:26:48,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:26:48,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:26:48,987 INFO L87 Difference]: Start difference. First operand 64673 states and 109665 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (179), 2 states have call predecessors, (179), 4 states have return successors, (180), 2 states have call predecessors, (180), 2 states have call successors, (180) [2023-11-29 02:26:51,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:26:51,061 INFO L93 Difference]: Finished difference Result 97886 states and 165168 transitions. [2023-11-29 02:26:51,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:26:51,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (179), 2 states have call predecessors, (179), 4 states have return successors, (180), 2 states have call predecessors, (180), 2 states have call successors, (180) Word has length 662 [2023-11-29 02:26:51,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:26:51,117 INFO L225 Difference]: With dead ends: 97886 [2023-11-29 02:26:51,117 INFO L226 Difference]: Without dead ends: 33214 [2023-11-29 02:26:51,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1326 GetRequests, 1316 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 02:26:51,177 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 559 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:26:51,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 1044 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:26:51,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33214 states. [2023-11-29 02:26:53,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33214 to 32586. [2023-11-29 02:26:53,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32586 states, 27408 states have (on average 1.6204028021015762) internal successors, (44412), 27524 states have internal predecessors, (44412), 4810 states have call successors, (4810), 367 states have call predecessors, (4810), 367 states have return successors, (4810), 4694 states have call predecessors, (4810), 4810 states have call successors, (4810) [2023-11-29 02:26:53,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32586 states to 32586 states and 54032 transitions. [2023-11-29 02:26:53,784 INFO L78 Accepts]: Start accepts. Automaton has 32586 states and 54032 transitions. Word has length 662 [2023-11-29 02:26:53,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:26:53,785 INFO L495 AbstractCegarLoop]: Abstraction has 32586 states and 54032 transitions. [2023-11-29 02:26:53,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (179), 2 states have call predecessors, (179), 4 states have return successors, (180), 2 states have call predecessors, (180), 2 states have call successors, (180) [2023-11-29 02:26:53,785 INFO L276 IsEmpty]: Start isEmpty. Operand 32586 states and 54032 transitions. [2023-11-29 02:26:53,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-11-29 02:26:53,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:26:53,800 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:53,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 02:26:54,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 02:26:54,001 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:26:54,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:26:54,001 INFO L85 PathProgramCache]: Analyzing trace with hash 55029941, now seen corresponding path program 1 times [2023-11-29 02:26:54,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:26:54,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618677817] [2023-11-29 02:26:54,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:54,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:26:54,050 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:26:54,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558604124] [2023-11-29 02:26:54,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:54,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:54,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:26:54,051 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:26:54,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 02:26:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:54,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:26:54,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:26:54,844 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 10373 proven. 159 refuted. 0 times theorem prover too weak. 10072 trivial. 0 not checked. [2023-11-29 02:26:54,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:26:55,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:26:55,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618677817] [2023-11-29 02:26:55,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:26:55,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558604124] [2023-11-29 02:26:55,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558604124] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:26:55,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:26:55,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-29 02:26:55,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075886805] [2023-11-29 02:26:55,055 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 02:26:55,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:26:55,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:26:55,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:26:55,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:26:55,058 INFO L87 Difference]: Start difference. First operand 32586 states and 54032 transitions. Second operand has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 2 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-11-29 02:26:58,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:26:58,883 INFO L93 Difference]: Finished difference Result 95878 states and 158424 transitions. [2023-11-29 02:26:58,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:26:58,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 2 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) Word has length 663 [2023-11-29 02:26:58,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:26:58,978 INFO L225 Difference]: With dead ends: 95878 [2023-11-29 02:26:58,978 INFO L226 Difference]: Without dead ends: 63293 [2023-11-29 02:26:59,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 754 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-11-29 02:26:59,015 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 633 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:26:59,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 1302 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 02:26:59,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63293 states. [2023-11-29 02:27:02,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63293 to 62190. [2023-11-29 02:27:02,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62190 states, 53537 states have (on average 1.623419317481368) internal successors, (86913), 53781 states have internal predecessors, (86913), 7948 states have call successors, (7948), 704 states have call predecessors, (7948), 704 states have return successors, (7948), 7704 states have call predecessors, (7948), 7948 states have call successors, (7948) [2023-11-29 02:27:02,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62190 states to 62190 states and 102809 transitions. [2023-11-29 02:27:02,893 INFO L78 Accepts]: Start accepts. Automaton has 62190 states and 102809 transitions. Word has length 663 [2023-11-29 02:27:02,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:27:02,894 INFO L495 AbstractCegarLoop]: Abstraction has 62190 states and 102809 transitions. [2023-11-29 02:27:02,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 2 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-11-29 02:27:02,894 INFO L276 IsEmpty]: Start isEmpty. Operand 62190 states and 102809 transitions. [2023-11-29 02:27:02,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-11-29 02:27:02,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:27:02,917 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:02,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-29 02:27:03,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:27:03,118 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:27:03,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:27:03,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1621787891, now seen corresponding path program 1 times [2023-11-29 02:27:03,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:27:03,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514408078] [2023-11-29 02:27:03,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:27:03,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:27:03,167 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:27:03,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005973536] [2023-11-29 02:27:03,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:27:03,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:27:03,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:27:03,168 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:27:03,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 02:27:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:03,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:27:03,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:27:04,331 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 02:27:04,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:27:04,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:27:04,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514408078] [2023-11-29 02:27:04,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:27:04,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005973536] [2023-11-29 02:27:04,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005973536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:27:04,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:27:04,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:27:04,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387088233] [2023-11-29 02:27:04,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:27:04,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:27:04,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:27:04,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:27:04,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:27:04,335 INFO L87 Difference]: Start difference. First operand 62190 states and 102809 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:27:07,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:27:07,712 INFO L93 Difference]: Finished difference Result 124859 states and 205977 transitions. [2023-11-29 02:27:07,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:27:07,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 663 [2023-11-29 02:27:07,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:27:07,813 INFO L225 Difference]: With dead ends: 124859 [2023-11-29 02:27:07,813 INFO L226 Difference]: Without dead ends: 62670 [2023-11-29 02:27:07,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 659 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:27:07,871 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 867 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:27:07,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 609 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:27:07,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62670 states. [2023-11-29 02:27:11,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62670 to 56037. [2023-11-29 02:27:11,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56037 states, 49280 states have (on average 1.6288961038961038) internal successors, (80272), 49484 states have internal predecessors, (80272), 6204 states have call successors, (6204), 552 states have call predecessors, (6204), 552 states have return successors, (6204), 6000 states have call predecessors, (6204), 6204 states have call successors, (6204) [2023-11-29 02:27:11,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56037 states to 56037 states and 92680 transitions. [2023-11-29 02:27:11,499 INFO L78 Accepts]: Start accepts. Automaton has 56037 states and 92680 transitions. Word has length 663 [2023-11-29 02:27:11,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:27:11,499 INFO L495 AbstractCegarLoop]: Abstraction has 56037 states and 92680 transitions. [2023-11-29 02:27:11,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:27:11,499 INFO L276 IsEmpty]: Start isEmpty. Operand 56037 states and 92680 transitions. [2023-11-29 02:27:11,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-11-29 02:27:11,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:27:11,521 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:11,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 02:27:11,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:27:11,722 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:27:11,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:27:11,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1683827505, now seen corresponding path program 1 times [2023-11-29 02:27:11,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:27:11,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330574044] [2023-11-29 02:27:11,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:27:11,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:27:11,768 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:27:11,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349864281] [2023-11-29 02:27:11,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:27:11,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:27:11,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:27:11,770 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:27:11,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 02:27:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:12,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 1520 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:27:12,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:27:12,847 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-11-29 02:27:12,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:27:12,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:27:12,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330574044] [2023-11-29 02:27:12,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:27:12,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349864281] [2023-11-29 02:27:12,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349864281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:27:12,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:27:12,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:27:12,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011979573] [2023-11-29 02:27:12,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:27:12,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:27:12,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:27:12,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:27:12,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:27:12,850 INFO L87 Difference]: Start difference. First operand 56037 states and 92680 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:27:19,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:27:19,699 INFO L93 Difference]: Finished difference Result 144307 states and 236675 transitions. [2023-11-29 02:27:19,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 02:27:19,699 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 663 [2023-11-29 02:27:19,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:27:19,849 INFO L225 Difference]: With dead ends: 144307 [2023-11-29 02:27:19,850 INFO L226 Difference]: Without dead ends: 88271 [2023-11-29 02:27:19,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 658 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:27:19,906 INFO L413 NwaCegarLoop]: 953 mSDtfsCounter, 961 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:27:19,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 1631 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 02:27:19,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88271 states. [2023-11-29 02:27:24,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88271 to 65332. [2023-11-29 02:27:24,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65332 states, 58480 states have (on average 1.6335499316005473) internal successors, (95530), 58685 states have internal predecessors, (95530), 6278 states have call successors, (6278), 573 states have call predecessors, (6278), 573 states have return successors, (6278), 6073 states have call predecessors, (6278), 6278 states have call successors, (6278) [2023-11-29 02:27:24,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65332 states to 65332 states and 108086 transitions. [2023-11-29 02:27:24,214 INFO L78 Accepts]: Start accepts. Automaton has 65332 states and 108086 transitions. Word has length 663 [2023-11-29 02:27:24,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:27:24,215 INFO L495 AbstractCegarLoop]: Abstraction has 65332 states and 108086 transitions. [2023-11-29 02:27:24,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-11-29 02:27:24,215 INFO L276 IsEmpty]: Start isEmpty. Operand 65332 states and 108086 transitions. [2023-11-29 02:27:24,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-11-29 02:27:24,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:27:24,243 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:24,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 02:27:24,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:27:24,443 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:27:24,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:27:24,444 INFO L85 PathProgramCache]: Analyzing trace with hash -682867089, now seen corresponding path program 1 times [2023-11-29 02:27:24,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:27:24,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81662728] [2023-11-29 02:27:24,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:27:24,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:27:24,499 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:27:24,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594639478] [2023-11-29 02:27:24,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:27:24,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:27:24,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:27:24,501 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:27:24,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 02:27:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:24,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 02:27:24,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:27:26,284 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 7751 proven. 228 refuted. 0 times theorem prover too weak. 12625 trivial. 0 not checked. [2023-11-29 02:27:26,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:27:27,037 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 75 proven. 228 refuted. 0 times theorem prover too weak. 20301 trivial. 0 not checked. [2023-11-29 02:27:27,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:27:27,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81662728] [2023-11-29 02:27:27,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:27:27,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594639478] [2023-11-29 02:27:27,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594639478] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:27:27,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:27:27,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-11-29 02:27:27,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589482419] [2023-11-29 02:27:27,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:27:27,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:27:27,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:27:27,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:27:27,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:27:27,041 INFO L87 Difference]: Start difference. First operand 65332 states and 108086 transitions. Second operand has 12 states, 12 states have (on average 25.0) internal successors, (300), 12 states have internal predecessors, (300), 4 states have call successors, (204), 3 states have call predecessors, (204), 5 states have return successors, (204), 4 states have call predecessors, (204), 4 states have call successors, (204) [2023-11-29 02:27:33,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:27:33,641 INFO L93 Difference]: Finished difference Result 142786 states and 235193 transitions. [2023-11-29 02:27:33,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 02:27:33,642 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 25.0) internal successors, (300), 12 states have internal predecessors, (300), 4 states have call successors, (204), 3 states have call predecessors, (204), 5 states have return successors, (204), 4 states have call predecessors, (204), 4 states have call successors, (204) Word has length 663 [2023-11-29 02:27:33,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:27:33,759 INFO L225 Difference]: With dead ends: 142786 [2023-11-29 02:27:33,759 INFO L226 Difference]: Without dead ends: 77604 [2023-11-29 02:27:33,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1343 GetRequests, 1316 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=244, Invalid=568, Unknown=0, NotChecked=0, Total=812 [2023-11-29 02:27:33,813 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 3006 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3032 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 2181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:27:33,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3032 Valid, 2113 Invalid, 2181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [713 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 02:27:33,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77604 states. [2023-11-29 02:27:38,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77604 to 60178. [2023-11-29 02:27:38,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60178 states, 53305 states have (on average 1.6215739611668698) internal successors, (86438), 53495 states have internal predecessors, (86438), 6293 states have call successors, (6293), 579 states have call predecessors, (6293), 579 states have return successors, (6293), 6103 states have call predecessors, (6293), 6293 states have call successors, (6293) [2023-11-29 02:27:38,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60178 states to 60178 states and 99024 transitions. [2023-11-29 02:27:38,221 INFO L78 Accepts]: Start accepts. Automaton has 60178 states and 99024 transitions. Word has length 663 [2023-11-29 02:27:38,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:27:38,222 INFO L495 AbstractCegarLoop]: Abstraction has 60178 states and 99024 transitions. [2023-11-29 02:27:38,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.0) internal successors, (300), 12 states have internal predecessors, (300), 4 states have call successors, (204), 3 states have call predecessors, (204), 5 states have return successors, (204), 4 states have call predecessors, (204), 4 states have call successors, (204) [2023-11-29 02:27:38,222 INFO L276 IsEmpty]: Start isEmpty. Operand 60178 states and 99024 transitions. [2023-11-29 02:27:38,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-11-29 02:27:38,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:27:38,247 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:38,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 02:27:38,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:27:38,448 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:27:38,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:27:38,448 INFO L85 PathProgramCache]: Analyzing trace with hash 273010291, now seen corresponding path program 1 times [2023-11-29 02:27:38,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:27:38,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346845910] [2023-11-29 02:27:38,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:27:38,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:27:38,504 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:27:38,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106073089] [2023-11-29 02:27:38,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:27:38,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:27:38,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:27:38,506 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:27:38,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 02:27:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:38,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:27:38,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:27:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 10097 proven. 177 refuted. 0 times theorem prover too weak. 10330 trivial. 0 not checked. [2023-11-29 02:27:39,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:27:40,368 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 126 proven. 177 refuted. 0 times theorem prover too weak. 20301 trivial. 0 not checked. [2023-11-29 02:27:40,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:27:40,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346845910] [2023-11-29 02:27:40,368 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:27:40,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106073089] [2023-11-29 02:27:40,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106073089] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:27:40,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:27:40,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-11-29 02:27:40,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293582219] [2023-11-29 02:27:40,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:27:40,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:27:40,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:27:40,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:27:40,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:27:40,372 INFO L87 Difference]: Start difference. First operand 60178 states and 99024 transitions. Second operand has 10 states, 10 states have (on average 25.4) internal successors, (254), 10 states have internal predecessors, (254), 4 states have call successors, (204), 3 states have call predecessors, (204), 5 states have return successors, (204), 4 states have call predecessors, (204), 4 states have call successors, (204) [2023-11-29 02:27:54,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:27:54,063 INFO L93 Difference]: Finished difference Result 232048 states and 381388 transitions. [2023-11-29 02:27:54,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 02:27:54,064 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 25.4) internal successors, (254), 10 states have internal predecessors, (254), 4 states have call successors, (204), 3 states have call predecessors, (204), 5 states have return successors, (204), 4 states have call predecessors, (204), 4 states have call successors, (204) Word has length 663 [2023-11-29 02:27:54,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:27:54,315 INFO L225 Difference]: With dead ends: 232048 [2023-11-29 02:27:54,316 INFO L226 Difference]: Without dead ends: 172020 [2023-11-29 02:27:54,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1335 GetRequests, 1318 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=208, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:27:54,372 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 2806 mSDsluCounter, 2957 mSDsCounter, 0 mSdLazyCounter, 2445 mSolverCounterSat, 833 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2948 SdHoareTripleChecker+Valid, 3568 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 833 IncrementalHoareTripleChecker+Valid, 2445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:27:54,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2948 Valid, 3568 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [833 Valid, 2445 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 02:27:54,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172020 states. [2023-11-29 02:28:03,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172020 to 115111. [2023-11-29 02:28:03,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115111 states, 102418 states have (on average 1.6221757894120175) internal successors, (166140), 102780 states have internal predecessors, (166140), 11609 states have call successors, (11609), 1083 states have call predecessors, (11609), 1083 states have return successors, (11609), 11247 states have call predecessors, (11609), 11609 states have call successors, (11609) [2023-11-29 02:28:03,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115111 states to 115111 states and 189358 transitions. [2023-11-29 02:28:03,475 INFO L78 Accepts]: Start accepts. Automaton has 115111 states and 189358 transitions. Word has length 663 [2023-11-29 02:28:03,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:28:03,476 INFO L495 AbstractCegarLoop]: Abstraction has 115111 states and 189358 transitions. [2023-11-29 02:28:03,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.4) internal successors, (254), 10 states have internal predecessors, (254), 4 states have call successors, (204), 3 states have call predecessors, (204), 5 states have return successors, (204), 4 states have call predecessors, (204), 4 states have call successors, (204) [2023-11-29 02:28:03,476 INFO L276 IsEmpty]: Start isEmpty. Operand 115111 states and 189358 transitions. [2023-11-29 02:28:03,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-11-29 02:28:03,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:28:03,507 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:28:03,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-29 02:28:03,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:28:03,707 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:28:03,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:03,708 INFO L85 PathProgramCache]: Analyzing trace with hash 748197136, now seen corresponding path program 1 times [2023-11-29 02:28:03,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:03,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505326842] [2023-11-29 02:28:03,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:03,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:03,765 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:28:03,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079879265] [2023-11-29 02:28:03,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:03,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:28:03,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:03,766 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:28:03,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 02:28:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:04,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 02:28:04,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 10085 proven. 354 refuted. 0 times theorem prover too weak. 10165 trivial. 0 not checked. [2023-11-29 02:28:06,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:28:09,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:28:09,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505326842] [2023-11-29 02:28:09,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:28:09,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079879265] [2023-11-29 02:28:09,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079879265] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:28:09,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:28:09,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-29 02:28:09,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109414895] [2023-11-29 02:28:09,059 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 02:28:09,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:28:09,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:28:09,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:28:09,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:28:09,062 INFO L87 Difference]: Start difference. First operand 115111 states and 189358 transitions. Second operand has 11 states, 11 states have (on average 15.0) internal successors, (165), 9 states have internal predecessors, (165), 3 states have call successors, (102), 3 states have call predecessors, (102), 4 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2023-11-29 02:28:29,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:28:29,452 INFO L93 Difference]: Finished difference Result 357374 states and 586162 transitions. [2023-11-29 02:28:29,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 02:28:29,452 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.0) internal successors, (165), 9 states have internal predecessors, (165), 3 states have call successors, (102), 3 states have call predecessors, (102), 4 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) Word has length 663 [2023-11-29 02:28:29,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:28:30,048 INFO L225 Difference]: With dead ends: 357374 [2023-11-29 02:28:30,048 INFO L226 Difference]: Without dead ends: 242413 [2023-11-29 02:28:30,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1105 GetRequests, 1078 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=267, Invalid=545, Unknown=0, NotChecked=0, Total=812 [2023-11-29 02:28:30,132 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 1015 mSDsluCounter, 3263 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 3978 SdHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:28:30,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 3978 Invalid, 1917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1785 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 02:28:30,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242413 states. [2023-11-29 02:28:40,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242413 to 127567. [2023-11-29 02:28:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127567 states, 112580 states have (on average 1.6173387813110678) internal successors, (182080), 112986 states have internal predecessors, (182080), 13683 states have call successors, (13683), 1303 states have call predecessors, (13683), 1303 states have return successors, (13683), 13277 states have call predecessors, (13683), 13683 states have call successors, (13683) [2023-11-29 02:28:41,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127567 states to 127567 states and 209446 transitions. [2023-11-29 02:28:41,334 INFO L78 Accepts]: Start accepts. Automaton has 127567 states and 209446 transitions. Word has length 663 [2023-11-29 02:28:41,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:28:41,335 INFO L495 AbstractCegarLoop]: Abstraction has 127567 states and 209446 transitions. [2023-11-29 02:28:41,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.0) internal successors, (165), 9 states have internal predecessors, (165), 3 states have call successors, (102), 3 states have call predecessors, (102), 4 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2023-11-29 02:28:41,335 INFO L276 IsEmpty]: Start isEmpty. Operand 127567 states and 209446 transitions. [2023-11-29 02:28:41,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-11-29 02:28:41,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:28:41,355 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:28:41,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 02:28:41,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:28:41,556 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:28:41,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:41,556 INFO L85 PathProgramCache]: Analyzing trace with hash 16229710, now seen corresponding path program 1 times [2023-11-29 02:28:41,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:41,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432831053] [2023-11-29 02:28:41,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:41,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:41,599 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:28:41,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546088304] [2023-11-29 02:28:41,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:41,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:28:41,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:41,600 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:28:41,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 02:28:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:42,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-29 02:28:42,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:49,445 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 14433 proven. 783 refuted. 0 times theorem prover too weak. 5388 trivial. 0 not checked. [2023-11-29 02:28:49,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:29:16,679 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 561 proven. 633 refuted. 0 times theorem prover too weak. 19410 trivial. 0 not checked. [2023-11-29 02:29:16,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:29:16,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432831053] [2023-11-29 02:29:16,679 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:29:16,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546088304] [2023-11-29 02:29:16,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546088304] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:29:16,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:29:16,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26] total 47 [2023-11-29 02:29:16,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802225196] [2023-11-29 02:29:16,680 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:29:16,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-29 02:29:16,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:29:16,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-29 02:29:16,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=517, Invalid=1645, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 02:29:16,684 INFO L87 Difference]: Start difference. First operand 127567 states and 209446 transitions. Second operand has 47 states, 46 states have (on average 7.173913043478261) internal successors, (330), 45 states have internal predecessors, (330), 12 states have call successors, (204), 7 states have call predecessors, (204), 15 states have return successors, (204), 12 states have call predecessors, (204), 12 states have call successors, (204) [2023-11-29 02:37:12,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:37:12,957 INFO L93 Difference]: Finished difference Result 1670499 states and 2716022 transitions. [2023-11-29 02:37:12,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 483 states. [2023-11-29 02:37:12,958 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 7.173913043478261) internal successors, (330), 45 states have internal predecessors, (330), 12 states have call successors, (204), 7 states have call predecessors, (204), 15 states have return successors, (204), 12 states have call predecessors, (204), 12 states have call successors, (204) Word has length 663 [2023-11-29 02:37:12,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:37:16,599 INFO L225 Difference]: With dead ends: 1670499 [2023-11-29 02:37:16,600 INFO L226 Difference]: Without dead ends: 1533594 [2023-11-29 02:37:17,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1895 GetRequests, 1391 SyntacticMatches, 0 SemanticMatches, 504 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124912 ImplicationChecksByTransitivity, 98.5s TimeCoverageRelationStatistics Valid=47819, Invalid=207711, Unknown=0, NotChecked=0, Total=255530 [2023-11-29 02:37:17,131 INFO L413 NwaCegarLoop]: 2206 mSDtfsCounter, 34670 mSDsluCounter, 35237 mSDsCounter, 0 mSdLazyCounter, 32992 mSolverCounterSat, 13987 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34845 SdHoareTripleChecker+Valid, 37443 SdHoareTripleChecker+Invalid, 46979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 13987 IncrementalHoareTripleChecker+Valid, 32992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:37:17,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34845 Valid, 37443 Invalid, 46979 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [13987 Valid, 32992 Invalid, 0 Unknown, 0 Unchecked, 84.0s Time] [2023-11-29 02:37:17,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533594 states. [2023-11-29 02:38:53,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533594 to 423969. [2023-11-29 02:38:53,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423969 states, 370610 states have (on average 1.5976902943795364) internal successors, (592120), 372229 states have internal predecessors, (592120), 48483 states have call successors, (48483), 4875 states have call predecessors, (48483), 4875 states have return successors, (48483), 46864 states have call predecessors, (48483), 48483 states have call successors, (48483) [2023-11-29 02:38:55,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423969 states to 423969 states and 689086 transitions. [2023-11-29 02:38:55,341 INFO L78 Accepts]: Start accepts. Automaton has 423969 states and 689086 transitions. Word has length 663 [2023-11-29 02:38:55,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:38:55,341 INFO L495 AbstractCegarLoop]: Abstraction has 423969 states and 689086 transitions. [2023-11-29 02:38:55,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 7.173913043478261) internal successors, (330), 45 states have internal predecessors, (330), 12 states have call successors, (204), 7 states have call predecessors, (204), 15 states have return successors, (204), 12 states have call predecessors, (204), 12 states have call successors, (204) [2023-11-29 02:38:55,342 INFO L276 IsEmpty]: Start isEmpty. Operand 423969 states and 689086 transitions. [2023-11-29 02:38:55,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2023-11-29 02:38:55,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:38:55,407 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:38:55,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 02:38:55,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:38:55,608 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:38:55,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:38:55,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1263373401, now seen corresponding path program 1 times [2023-11-29 02:38:55,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:38:55,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952556891] [2023-11-29 02:38:55,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:55,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:38:55,657 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:38:55,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880843045] [2023-11-29 02:38:55,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:55,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:38:55,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:38:55,659 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:38:55,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dec8716-b7ea-4b7f-a26c-68313820fe6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 02:38:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:56,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:38:56,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:38:56,344 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 8423 proven. 84 refuted. 0 times theorem prover too weak. 12097 trivial. 0 not checked. [2023-11-29 02:38:56,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:38:56,792 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 219 proven. 84 refuted. 0 times theorem prover too weak. 20301 trivial. 0 not checked. [2023-11-29 02:38:56,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:38:56,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952556891] [2023-11-29 02:38:56,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:38:56,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880843045] [2023-11-29 02:38:56,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880843045] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:38:56,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:38:56,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-29 02:38:56,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585798334] [2023-11-29 02:38:56,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:38:56,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:38:56,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:38:56,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:38:56,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:38:56,795 INFO L87 Difference]: Start difference. First operand 423969 states and 689086 transitions. Second operand has 9 states, 9 states have (on average 20.88888888888889) internal successors, (188), 9 states have internal predecessors, (188), 2 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131)