./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-29.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/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_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-29.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/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_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/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 7e64a2d21e15132e000697ca4f4f7d29d25b5e3294a251108bc191e4406c56ac --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:31:16,201 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:31:16,288 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:31:16,293 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:31:16,294 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:31:16,318 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:31:16,318 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:31:16,319 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:31:16,320 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:31:16,320 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:31:16,321 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:31:16,321 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:31:16,322 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:31:16,323 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:31:16,323 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:31:16,324 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:31:16,324 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:31:16,325 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:31:16,325 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:31:16,325 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:31:16,326 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:31:16,327 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:31:16,327 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:31:16,327 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:31:16,328 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:31:16,328 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:31:16,329 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:31:16,329 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:31:16,330 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:31:16,330 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:31:16,331 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:31:16,331 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:31:16,332 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:31:16,332 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:31:16,332 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:31:16,332 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:31:16,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:31:16,333 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:31:16,333 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:31:16,333 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:31:16,333 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:31:16,334 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:31:16,334 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_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e64a2d21e15132e000697ca4f4f7d29d25b5e3294a251108bc191e4406c56ac [2023-11-29 00:31:16,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:31:16,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:31:16,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:31:16,600 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:31:16,600 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:31:16,601 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-29.i [2023-11-29 00:31:19,278 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:31:19,502 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:31:19,502 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-29.i [2023-11-29 00:31:19,512 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/data/753d87226/9da3d60e13df45dca374f387ce329ffe/FLAGd9ec02b1c [2023-11-29 00:31:19,524 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/data/753d87226/9da3d60e13df45dca374f387ce329ffe [2023-11-29 00:31:19,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:31:19,527 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:31:19,529 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:31:19,529 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:31:19,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:31:19,533 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:31:19" (1/1) ... [2023-11-29 00:31:19,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@753366fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:19, skipping insertion in model container [2023-11-29 00:31:19,535 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:31:19" (1/1) ... [2023-11-29 00:31:19,575 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:31:19,695 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_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-29.i[916,929] [2023-11-29 00:31:19,772 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:31:19,786 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:31:19,799 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_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-29.i[916,929] [2023-11-29 00:31:19,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:31:19,865 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:31:19,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:19 WrapperNode [2023-11-29 00:31:19,865 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:31:19,866 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:31:19,867 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:31:19,867 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:31:19,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:19" (1/1) ... [2023-11-29 00:31:19,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:19" (1/1) ... [2023-11-29 00:31:19,938 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 267 [2023-11-29 00:31:19,938 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:31:19,939 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:31:19,939 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:31:19,939 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:31:19,949 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:19" (1/1) ... [2023-11-29 00:31:19,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:19" (1/1) ... [2023-11-29 00:31:19,953 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:19" (1/1) ... [2023-11-29 00:31:19,977 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 00:31:19,977 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:19" (1/1) ... [2023-11-29 00:31:19,977 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:19" (1/1) ... [2023-11-29 00:31:19,994 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:19" (1/1) ... [2023-11-29 00:31:19,999 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:19" (1/1) ... [2023-11-29 00:31:20,005 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:19" (1/1) ... [2023-11-29 00:31:20,009 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:19" (1/1) ... [2023-11-29 00:31:20,018 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:31:20,019 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:31:20,019 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:31:20,019 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:31:20,020 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:19" (1/1) ... [2023-11-29 00:31:20,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:31:20,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:20,049 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:31:20,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:31:20,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:31:20,085 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 00:31:20,085 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 00:31:20,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:31:20,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:31:20,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:31:20,175 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:31:20,176 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:31:20,614 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:31:20,651 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:31:20,651 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:31:20,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:31:20 BoogieIcfgContainer [2023-11-29 00:31:20,652 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:31:20,654 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:31:20,654 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:31:20,657 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:31:20,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:31:19" (1/3) ... [2023-11-29 00:31:20,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2037bc08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:31:20, skipping insertion in model container [2023-11-29 00:31:20,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:19" (2/3) ... [2023-11-29 00:31:20,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2037bc08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:31:20, skipping insertion in model container [2023-11-29 00:31:20,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:31:20" (3/3) ... [2023-11-29 00:31:20,660 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-29.i [2023-11-29 00:31:20,677 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:31:20,677 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:31:20,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:31:20,726 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;@77331d4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:31:20,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:31:20,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 68 states have (on average 1.4411764705882353) internal successors, (98), 69 states have internal predecessors, (98), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 00:31:20,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-29 00:31:20,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:20,752 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:20,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:31:20,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:20,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1539792360, now seen corresponding path program 1 times [2023-11-29 00:31:20,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:20,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288542037] [2023-11-29 00:31:20,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:20,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:20,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:20,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288542037] [2023-11-29 00:31:20,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 00:31:20,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218175935] [2023-11-29 00:31:20,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:20,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:20,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:20,991 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:31:20,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:31:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:21,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 00:31:21,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:21,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2023-11-29 00:31:21,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:31:21,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218175935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:31:21,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:31:21,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:31:21,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985484180] [2023-11-29 00:31:21,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:31:21,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:31:21,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:21,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:31:21,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:31:21,320 INFO L87 Difference]: Start difference. First operand has 109 states, 68 states have (on average 1.4411764705882353) internal successors, (98), 69 states have internal predecessors, (98), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2023-11-29 00:31:21,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:21,383 INFO L93 Difference]: Finished difference Result 215 states and 384 transitions. [2023-11-29 00:31:21,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:31:21,386 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) Word has length 238 [2023-11-29 00:31:21,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:21,395 INFO L225 Difference]: With dead ends: 215 [2023-11-29 00:31:21,395 INFO L226 Difference]: Without dead ends: 107 [2023-11-29 00:31:21,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 237 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 00:31:21,404 INFO L413 NwaCegarLoop]: 166 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, 166 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 00:31:21,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 166 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:31:21,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-29 00:31:21,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-11-29 00:31:21,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 67 states have internal predecessors, (93), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 00:31:21,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 169 transitions. [2023-11-29 00:31:21,460 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 169 transitions. Word has length 238 [2023-11-29 00:31:21,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:21,460 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 169 transitions. [2023-11-29 00:31:21,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2023-11-29 00:31:21,461 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 169 transitions. [2023-11-29 00:31:21,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-29 00:31:21,467 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:21,467 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:21,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:31:21,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:21,671 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:31:21,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:21,672 INFO L85 PathProgramCache]: Analyzing trace with hash 128932832, now seen corresponding path program 1 times [2023-11-29 00:31:21,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:21,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005611930] [2023-11-29 00:31:21,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:21,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:21,748 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:31:21,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523616149] [2023-11-29 00:31:21,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:21,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:21,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:21,750 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:31:21,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:31:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:21,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:31:21,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:22,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 00:31:22,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:31:22,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:22,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005611930] [2023-11-29 00:31:22,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:31:22,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523616149] [2023-11-29 00:31:22,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523616149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:31:22,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:31:22,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:31:22,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780500585] [2023-11-29 00:31:22,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:31:22,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:31:22,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:22,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:31:22,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:31:22,026 INFO L87 Difference]: Start difference. First operand 107 states and 169 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:31:22,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:22,132 INFO L93 Difference]: Finished difference Result 313 states and 494 transitions. [2023-11-29 00:31:22,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:31:22,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 238 [2023-11-29 00:31:22,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:22,138 INFO L225 Difference]: With dead ends: 313 [2023-11-29 00:31:22,138 INFO L226 Difference]: Without dead ends: 207 [2023-11-29 00:31:22,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 236 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 00:31:22,142 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 148 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:22,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 424 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:31:22,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-29 00:31:22,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2023-11-29 00:31:22,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 126 states have (on average 1.3333333333333333) internal successors, (168), 126 states have internal predecessors, (168), 76 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 00:31:22,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 320 transitions. [2023-11-29 00:31:22,184 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 320 transitions. Word has length 238 [2023-11-29 00:31:22,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:22,185 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 320 transitions. [2023-11-29 00:31:22,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:31:22,186 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 320 transitions. [2023-11-29 00:31:22,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-29 00:31:22,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:22,191 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:22,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 00:31:22,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:22,395 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:31:22,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:22,396 INFO L85 PathProgramCache]: Analyzing trace with hash -50921384, now seen corresponding path program 1 times [2023-11-29 00:31:22,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:22,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330268698] [2023-11-29 00:31:22,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:22,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:22,475 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:31:22,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1357984096] [2023-11-29 00:31:22,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:22,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:22,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:22,477 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:31:22,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:31:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:22,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:31:22,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 00:31:22,718 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:31:22,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:22,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330268698] [2023-11-29 00:31:22,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:31:22,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357984096] [2023-11-29 00:31:22,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357984096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:31:22,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:31:22,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:31:22,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199399589] [2023-11-29 00:31:22,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:31:22,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:31:22,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:22,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:31:22,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:31:22,721 INFO L87 Difference]: Start difference. First operand 205 states and 320 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:31:22,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:22,791 INFO L93 Difference]: Finished difference Result 412 states and 642 transitions. [2023-11-29 00:31:22,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:31:22,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 239 [2023-11-29 00:31:22,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:22,795 INFO L225 Difference]: With dead ends: 412 [2023-11-29 00:31:22,795 INFO L226 Difference]: Without dead ends: 208 [2023-11-29 00:31:22,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 237 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 00:31:22,798 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 151 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:22,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 337 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:31:22,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-29 00:31:22,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2023-11-29 00:31:22,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 127 states have (on average 1.2992125984251968) internal successors, (165), 127 states have internal predecessors, (165), 76 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 00:31:22,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 317 transitions. [2023-11-29 00:31:22,831 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 317 transitions. Word has length 239 [2023-11-29 00:31:22,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:22,833 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 317 transitions. [2023-11-29 00:31:22,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:31:22,833 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 317 transitions. [2023-11-29 00:31:22,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-29 00:31:22,837 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:22,837 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:22,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:31:23,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:23,038 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:31:23,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:23,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1166105972, now seen corresponding path program 1 times [2023-11-29 00:31:23,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:23,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979022131] [2023-11-29 00:31:23,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:23,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:23,088 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:31:23,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633029555] [2023-11-29 00:31:23,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:23,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:23,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:23,089 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:31:23,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:31:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:23,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:31:23,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:23,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 37 proven. 111 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2023-11-29 00:31:23,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:31:24,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2023-11-29 00:31:24,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:24,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979022131] [2023-11-29 00:31:24,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:31:24,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633029555] [2023-11-29 00:31:24,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633029555] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:31:24,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:31:24,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 00:31:24,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459984118] [2023-11-29 00:31:24,042 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:31:24,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:31:24,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:24,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:31:24,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:31:24,044 INFO L87 Difference]: Start difference. First operand 206 states and 317 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2023-11-29 00:31:24,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:24,348 INFO L93 Difference]: Finished difference Result 421 states and 641 transitions. [2023-11-29 00:31:24,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:31:24,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) Word has length 240 [2023-11-29 00:31:24,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:24,352 INFO L225 Difference]: With dead ends: 421 [2023-11-29 00:31:24,352 INFO L226 Difference]: Without dead ends: 216 [2023-11-29 00:31:24,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 472 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:31:24,354 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 111 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:24,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 278 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:31:24,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-29 00:31:24,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 131. [2023-11-29 00:31:24,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 90 states have (on average 1.3333333333333333) internal successors, (120), 90 states have internal predecessors, (120), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 00:31:24,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 196 transitions. [2023-11-29 00:31:24,382 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 196 transitions. Word has length 240 [2023-11-29 00:31:24,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:24,383 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 196 transitions. [2023-11-29 00:31:24,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2023-11-29 00:31:24,383 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 196 transitions. [2023-11-29 00:31:24,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-29 00:31:24,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:24,387 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:24,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:31:24,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:24,591 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:31:24,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:24,591 INFO L85 PathProgramCache]: Analyzing trace with hash 2107792970, now seen corresponding path program 1 times [2023-11-29 00:31:24,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:24,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041256840] [2023-11-29 00:31:24,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:24,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:24,642 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:31:24,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [32478107] [2023-11-29 00:31:24,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:24,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:24,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:24,644 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:31:24,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:31:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:24,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:31:24,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:27,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 00:31:27,268 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:31:27,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:27,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041256840] [2023-11-29 00:31:27,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:31:27,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32478107] [2023-11-29 00:31:27,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32478107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:31:27,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:31:27,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:31:27,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140006140] [2023-11-29 00:31:27,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:31:27,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:31:27,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:27,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:31:27,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:31:27,272 INFO L87 Difference]: Start difference. First operand 131 states and 196 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:31:27,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:27,771 INFO L93 Difference]: Finished difference Result 420 states and 617 transitions. [2023-11-29 00:31:27,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 00:31:27,772 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 240 [2023-11-29 00:31:27,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:27,775 INFO L225 Difference]: With dead ends: 420 [2023-11-29 00:31:27,775 INFO L226 Difference]: Without dead ends: 290 [2023-11-29 00:31:27,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:31:27,777 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 441 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:27,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 592 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:31:27,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-29 00:31:27,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 154. [2023-11-29 00:31:27,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 113 states have (on average 1.3628318584070795) internal successors, (154), 113 states have internal predecessors, (154), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 00:31:27,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 230 transitions. [2023-11-29 00:31:27,797 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 230 transitions. Word has length 240 [2023-11-29 00:31:27,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:27,798 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 230 transitions. [2023-11-29 00:31:27,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:31:27,798 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 230 transitions. [2023-11-29 00:31:27,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-29 00:31:27,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:27,802 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:27,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:31:28,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:28,003 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:31:28,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:28,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1929008888, now seen corresponding path program 1 times [2023-11-29 00:31:28,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:28,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28926739] [2023-11-29 00:31:28,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:28,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:28,043 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:31:28,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92428161] [2023-11-29 00:31:28,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:28,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:28,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:28,045 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:31:28,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:31:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:28,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:31:28,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 00:31:29,806 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:31:29,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:29,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28926739] [2023-11-29 00:31:29,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:31:29,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92428161] [2023-11-29 00:31:29,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92428161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:31:29,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:31:29,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:31:29,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968452840] [2023-11-29 00:31:29,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:31:29,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:31:29,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:29,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:31:29,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:31:29,809 INFO L87 Difference]: Start difference. First operand 154 states and 230 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:31:30,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:30,414 INFO L93 Difference]: Finished difference Result 443 states and 650 transitions. [2023-11-29 00:31:30,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 00:31:30,415 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 240 [2023-11-29 00:31:30,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:30,418 INFO L225 Difference]: With dead ends: 443 [2023-11-29 00:31:30,418 INFO L226 Difference]: Without dead ends: 290 [2023-11-29 00:31:30,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:31:30,419 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 271 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:30,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 1035 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:31:30,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-29 00:31:30,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 154. [2023-11-29 00:31:30,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 113 states have (on average 1.3628318584070795) internal successors, (154), 113 states have internal predecessors, (154), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 00:31:30,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 230 transitions. [2023-11-29 00:31:30,442 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 230 transitions. Word has length 240 [2023-11-29 00:31:30,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:30,443 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 230 transitions. [2023-11-29 00:31:30,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:31:30,443 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 230 transitions. [2023-11-29 00:31:30,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-29 00:31:30,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:30,446 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:30,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:31:30,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:30,647 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:31:30,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:30,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1526685466, now seen corresponding path program 1 times [2023-11-29 00:31:30,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:30,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010434593] [2023-11-29 00:31:30,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:30,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:30,683 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:31:30,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446027600] [2023-11-29 00:31:30,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:30,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:30,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:30,685 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:31:30,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:31:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:30,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:31:30,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 687 proven. 96 refuted. 0 times theorem prover too weak. 2029 trivial. 0 not checked. [2023-11-29 00:31:31,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:31:31,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 15 proven. 96 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2023-11-29 00:31:31,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:31,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010434593] [2023-11-29 00:31:31,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:31:31,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446027600] [2023-11-29 00:31:31,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446027600] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:31:31,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:31:31,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-29 00:31:31,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106773209] [2023-11-29 00:31:31,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:31:31,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:31:31,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:31,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:31:31,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:31:31,370 INFO L87 Difference]: Start difference. First operand 154 states and 230 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2023-11-29 00:31:31,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:31,893 INFO L93 Difference]: Finished difference Result 409 states and 601 transitions. [2023-11-29 00:31:31,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 00:31:31,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) Word has length 240 [2023-11-29 00:31:31,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:31,896 INFO L225 Difference]: With dead ends: 409 [2023-11-29 00:31:31,896 INFO L226 Difference]: Without dead ends: 256 [2023-11-29 00:31:31,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 471 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:31:31,898 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 187 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:31,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 525 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:31:31,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-29 00:31:31,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 159. [2023-11-29 00:31:31,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 117 states have (on average 1.3418803418803418) internal successors, (157), 117 states have internal predecessors, (157), 38 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 00:31:31,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 233 transitions. [2023-11-29 00:31:31,917 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 233 transitions. Word has length 240 [2023-11-29 00:31:31,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:31,918 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 233 transitions. [2023-11-29 00:31:31,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2023-11-29 00:31:31,918 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 233 transitions. [2023-11-29 00:31:31,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-11-29 00:31:31,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:31,920 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:31,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:31:32,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 00:31:32,121 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:31:32,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:32,121 INFO L85 PathProgramCache]: Analyzing trace with hash -957444562, now seen corresponding path program 1 times [2023-11-29 00:31:32,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:32,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015605292] [2023-11-29 00:31:32,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:32,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:32,158 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:31:32,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152866054] [2023-11-29 00:31:32,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:32,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:32,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:32,159 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:31:32,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:31:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:32,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:31:32,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1203 proven. 78 refuted. 0 times theorem prover too weak. 1531 trivial. 0 not checked. [2023-11-29 00:31:32,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:31:32,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 33 proven. 78 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2023-11-29 00:31:32,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:32,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015605292] [2023-11-29 00:31:32,756 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:31:32,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152866054] [2023-11-29 00:31:32,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152866054] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:31:32,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:31:32,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 00:31:32,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839677015] [2023-11-29 00:31:32,757 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:31:32,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:31:32,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:32,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:31:32,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:31:32,759 INFO L87 Difference]: Start difference. First operand 159 states and 233 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 3 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) [2023-11-29 00:31:33,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:33,281 INFO L93 Difference]: Finished difference Result 426 states and 609 transitions. [2023-11-29 00:31:33,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:31:33,282 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 3 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) Word has length 241 [2023-11-29 00:31:33,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:33,284 INFO L225 Difference]: With dead ends: 426 [2023-11-29 00:31:33,284 INFO L226 Difference]: Without dead ends: 268 [2023-11-29 00:31:33,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:31:33,286 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 263 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:33,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 620 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:31:33,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-11-29 00:31:33,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 140. [2023-11-29 00:31:33,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 97 states have (on average 1.288659793814433) internal successors, (125), 97 states have internal predecessors, (125), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 00:31:33,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 201 transitions. [2023-11-29 00:31:33,306 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 201 transitions. Word has length 241 [2023-11-29 00:31:33,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:33,307 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 201 transitions. [2023-11-29 00:31:33,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 3 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) [2023-11-29 00:31:33,307 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 201 transitions. [2023-11-29 00:31:33,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-11-29 00:31:33,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:33,309 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:33,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 00:31:33,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:33,510 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:31:33,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:33,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1052032240, now seen corresponding path program 1 times [2023-11-29 00:31:33,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:33,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286749080] [2023-11-29 00:31:33,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:33,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:33,539 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:31:33,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [350107396] [2023-11-29 00:31:33,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:33,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:33,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:33,541 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:31:33,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:31:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:33,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:31:33,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:34,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 00:31:34,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:31:34,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:34,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286749080] [2023-11-29 00:31:34,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:31:34,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350107396] [2023-11-29 00:31:34,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350107396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:31:34,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:31:34,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:31:34,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858742642] [2023-11-29 00:31:34,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:31:34,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:31:34,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:34,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:31:34,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:31:34,964 INFO L87 Difference]: Start difference. First operand 140 states and 201 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:31:35,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:35,330 INFO L93 Difference]: Finished difference Result 386 states and 549 transitions. [2023-11-29 00:31:35,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:31:35,331 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 241 [2023-11-29 00:31:35,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:35,333 INFO L225 Difference]: With dead ends: 386 [2023-11-29 00:31:35,333 INFO L226 Difference]: Without dead ends: 247 [2023-11-29 00:31:35,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:31:35,334 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 197 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:35,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 912 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:31:35,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-11-29 00:31:35,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 164. [2023-11-29 00:31:35,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 121 states have (on average 1.3057851239669422) internal successors, (158), 121 states have internal predecessors, (158), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 00:31:35,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 234 transitions. [2023-11-29 00:31:35,348 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 234 transitions. Word has length 241 [2023-11-29 00:31:35,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:35,349 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 234 transitions. [2023-11-29 00:31:35,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:31:35,349 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 234 transitions. [2023-11-29 00:31:35,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-11-29 00:31:35,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:35,351 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:35,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:31:35,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 00:31:35,552 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:31:35,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:35,552 INFO L85 PathProgramCache]: Analyzing trace with hash -793866802, now seen corresponding path program 1 times [2023-11-29 00:31:35,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:35,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566490399] [2023-11-29 00:31:35,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:35,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:35,582 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:31:35,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154417784] [2023-11-29 00:31:35,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:35,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:35,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:35,583 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:31:35,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:31:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:35,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:31:35,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:37,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 00:31:37,068 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:31:37,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:37,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566490399] [2023-11-29 00:31:37,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:31:37,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154417784] [2023-11-29 00:31:37,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154417784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:31:37,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:31:37,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:31:37,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568606273] [2023-11-29 00:31:37,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:31:37,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:31:37,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:37,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:31:37,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:31:37,071 INFO L87 Difference]: Start difference. First operand 164 states and 234 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:31:37,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:37,469 INFO L93 Difference]: Finished difference Result 410 states and 581 transitions. [2023-11-29 00:31:37,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:31:37,469 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 241 [2023-11-29 00:31:37,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:37,472 INFO L225 Difference]: With dead ends: 410 [2023-11-29 00:31:37,472 INFO L226 Difference]: Without dead ends: 247 [2023-11-29 00:31:37,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:31:37,473 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 206 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:37,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 958 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:31:37,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-11-29 00:31:37,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 164. [2023-11-29 00:31:37,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 121 states have (on average 1.3057851239669422) internal successors, (158), 121 states have internal predecessors, (158), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 00:31:37,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 234 transitions. [2023-11-29 00:31:37,493 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 234 transitions. Word has length 241 [2023-11-29 00:31:37,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:37,494 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 234 transitions. [2023-11-29 00:31:37,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:31:37,494 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 234 transitions. [2023-11-29 00:31:37,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-11-29 00:31:37,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:37,496 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:37,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 00:31:37,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:37,697 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:31:37,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:37,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1858755976, now seen corresponding path program 1 times [2023-11-29 00:31:37,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:37,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792811716] [2023-11-29 00:31:37,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:37,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:37,728 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:31:37,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1207512130] [2023-11-29 00:31:37,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:37,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:37,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:37,730 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:31:37,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:31:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:37,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 00:31:37,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1220 proven. 426 refuted. 0 times theorem prover too weak. 1166 trivial. 0 not checked. [2023-11-29 00:31:40,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:31:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 42 proven. 384 refuted. 0 times theorem prover too weak. 2386 trivial. 0 not checked. [2023-11-29 00:31:49,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:49,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792811716] [2023-11-29 00:31:49,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:31:49,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207512130] [2023-11-29 00:31:49,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207512130] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:31:49,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:31:49,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22] total 43 [2023-11-29 00:31:49,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301427903] [2023-11-29 00:31:49,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:31:49,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 00:31:49,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:49,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 00:31:49,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=1328, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 00:31:49,617 INFO L87 Difference]: Start difference. First operand 164 states and 234 transitions. Second operand has 43 states, 41 states have (on average 3.1951219512195124) internal successors, (131), 39 states have internal predecessors, (131), 9 states have call successors, (74), 6 states have call predecessors, (74), 12 states have return successors, (75), 9 states have call predecessors, (75), 9 states have call successors, (75) [2023-11-29 00:31:52,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:52,472 INFO L93 Difference]: Finished difference Result 485 states and 666 transitions. [2023-11-29 00:31:52,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-29 00:31:52,473 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 3.1951219512195124) internal successors, (131), 39 states have internal predecessors, (131), 9 states have call successors, (74), 6 states have call predecessors, (74), 12 states have return successors, (75), 9 states have call predecessors, (75), 9 states have call successors, (75) Word has length 241 [2023-11-29 00:31:52,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:52,475 INFO L225 Difference]: With dead ends: 485 [2023-11-29 00:31:52,475 INFO L226 Difference]: Without dead ends: 316 [2023-11-29 00:31:52,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 438 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1644 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1563, Invalid=4443, Unknown=0, NotChecked=0, Total=6006 [2023-11-29 00:31:52,479 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 1089 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:52,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 1256 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 00:31:52,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-29 00:31:52,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 207. [2023-11-29 00:31:52,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 159 states have (on average 1.3018867924528301) internal successors, (207), 159 states have internal predecessors, (207), 38 states have call successors, (38), 9 states have call predecessors, (38), 9 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 00:31:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 283 transitions. [2023-11-29 00:31:52,506 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 283 transitions. Word has length 241 [2023-11-29 00:31:52,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:52,507 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 283 transitions. [2023-11-29 00:31:52,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 3.1951219512195124) internal successors, (131), 39 states have internal predecessors, (131), 9 states have call successors, (74), 6 states have call predecessors, (74), 12 states have return successors, (75), 9 states have call predecessors, (75), 9 states have call successors, (75) [2023-11-29 00:31:52,508 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 283 transitions. [2023-11-29 00:31:52,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-29 00:31:52,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:52,509 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:52,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 00:31:52,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:52,710 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:31:52,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:52,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1585115220, now seen corresponding path program 1 times [2023-11-29 00:31:52,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:52,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302659268] [2023-11-29 00:31:52,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:52,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:52,741 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:31:52,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709575301] [2023-11-29 00:31:52,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:52,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:52,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:52,743 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:31:52,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 00:31:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:52,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:31:52,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:53,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 00:31:53,164 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:31:53,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:53,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302659268] [2023-11-29 00:31:53,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:31:53,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709575301] [2023-11-29 00:31:53,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709575301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:31:53,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:31:53,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:31:53,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126175881] [2023-11-29 00:31:53,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:31:53,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:31:53,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:53,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:31:53,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:31:53,167 INFO L87 Difference]: Start difference. First operand 207 states and 283 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:31:53,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:53,309 INFO L93 Difference]: Finished difference Result 584 states and 795 transitions. [2023-11-29 00:31:53,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:31:53,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 242 [2023-11-29 00:31:53,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:53,312 INFO L225 Difference]: With dead ends: 584 [2023-11-29 00:31:53,312 INFO L226 Difference]: Without dead ends: 378 [2023-11-29 00:31:53,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 239 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 00:31:53,313 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 94 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:53,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 484 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:31:53,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-11-29 00:31:53,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 307. [2023-11-29 00:31:53,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 212 states have (on average 1.2264150943396226) internal successors, (260), 212 states have internal predecessors, (260), 76 states have call successors, (76), 18 states have call predecessors, (76), 18 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 00:31:53,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 412 transitions. [2023-11-29 00:31:53,345 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 412 transitions. Word has length 242 [2023-11-29 00:31:53,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:53,345 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 412 transitions. [2023-11-29 00:31:53,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:31:53,346 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 412 transitions. [2023-11-29 00:31:53,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-29 00:31:53,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:53,348 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:53,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 00:31:53,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:53,548 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:31:53,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:53,549 INFO L85 PathProgramCache]: Analyzing trace with hash 91355610, now seen corresponding path program 1 times [2023-11-29 00:31:53,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:53,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20389233] [2023-11-29 00:31:53,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:53,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:53,579 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:31:53,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445750140] [2023-11-29 00:31:53,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:53,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:53,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:53,581 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:31:53,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 00:31:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:53,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 00:31:53,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:56,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1220 proven. 426 refuted. 0 times theorem prover too weak. 1166 trivial. 0 not checked. [2023-11-29 00:31:56,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:32:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 42 proven. 384 refuted. 0 times theorem prover too weak. 2386 trivial. 0 not checked. [2023-11-29 00:32:00,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:32:00,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20389233] [2023-11-29 00:32:00,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:32:00,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445750140] [2023-11-29 00:32:00,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445750140] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:32:00,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:32:00,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22] total 43 [2023-11-29 00:32:00,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480870155] [2023-11-29 00:32:00,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:32:00,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 00:32:00,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:32:00,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 00:32:00,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=1315, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 00:32:00,083 INFO L87 Difference]: Start difference. First operand 307 states and 412 transitions. Second operand has 43 states, 41 states have (on average 3.2439024390243905) internal successors, (133), 39 states have internal predecessors, (133), 9 states have call successors, (74), 6 states have call predecessors, (74), 12 states have return successors, (75), 9 states have call predecessors, (75), 9 states have call successors, (75) [2023-11-29 00:32:02,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:32:02,190 INFO L93 Difference]: Finished difference Result 651 states and 876 transitions. [2023-11-29 00:32:02,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-29 00:32:02,191 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 3.2439024390243905) internal successors, (133), 39 states have internal predecessors, (133), 9 states have call successors, (74), 6 states have call predecessors, (74), 12 states have return successors, (75), 9 states have call predecessors, (75), 9 states have call successors, (75) Word has length 242 [2023-11-29 00:32:02,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:32:02,194 INFO L225 Difference]: With dead ends: 651 [2023-11-29 00:32:02,194 INFO L226 Difference]: Without dead ends: 445 [2023-11-29 00:32:02,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 440 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1671 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1577, Invalid=4429, Unknown=0, NotChecked=0, Total=6006 [2023-11-29 00:32:02,198 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 874 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:32:02,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1008 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 00:32:02,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2023-11-29 00:32:02,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 308. [2023-11-29 00:32:02,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 213 states have (on average 1.2300469483568075) internal successors, (262), 213 states have internal predecessors, (262), 76 states have call successors, (76), 18 states have call predecessors, (76), 18 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 00:32:02,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 414 transitions. [2023-11-29 00:32:02,249 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 414 transitions. Word has length 242 [2023-11-29 00:32:02,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:32:02,250 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 414 transitions. [2023-11-29 00:32:02,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 3.2439024390243905) internal successors, (133), 39 states have internal predecessors, (133), 9 states have call successors, (74), 6 states have call predecessors, (74), 12 states have return successors, (75), 9 states have call predecessors, (75), 9 states have call successors, (75) [2023-11-29 00:32:02,250 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 414 transitions. [2023-11-29 00:32:02,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-29 00:32:02,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:32:02,252 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:32:02,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 00:32:02,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 00:32:02,453 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:32:02,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:02,453 INFO L85 PathProgramCache]: Analyzing trace with hash 678161624, now seen corresponding path program 1 times [2023-11-29 00:32:02,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:32:02,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117011464] [2023-11-29 00:32:02,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:02,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:32:02,478 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:32:02,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279046703] [2023-11-29 00:32:02,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:02,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:32:02,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:32:02,480 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:32:02,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 00:32:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:02,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 00:32:02,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1337 proven. 138 refuted. 0 times theorem prover too weak. 1337 trivial. 0 not checked. [2023-11-29 00:32:03,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:32:04,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 42 proven. 69 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2023-11-29 00:32:04,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:32:04,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117011464] [2023-11-29 00:32:04,525 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:32:04,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279046703] [2023-11-29 00:32:04,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279046703] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:32:04,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:32:04,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2023-11-29 00:32:04,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494938040] [2023-11-29 00:32:04,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:32:04,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 00:32:04,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:32:04,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 00:32:04,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2023-11-29 00:32:04,528 INFO L87 Difference]: Start difference. First operand 308 states and 414 transitions. Second operand has 24 states, 23 states have (on average 5.0) internal successors, (115), 22 states have internal predecessors, (115), 6 states have call successors, (76), 4 states have call predecessors, (76), 6 states have return successors, (76), 6 states have call predecessors, (76), 6 states have call successors, (76) [2023-11-29 00:32:06,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:32:06,564 INFO L93 Difference]: Finished difference Result 1006 states and 1381 transitions. [2023-11-29 00:32:06,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 00:32:06,564 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.0) internal successors, (115), 22 states have internal predecessors, (115), 6 states have call successors, (76), 4 states have call predecessors, (76), 6 states have return successors, (76), 6 states have call predecessors, (76), 6 states have call successors, (76) Word has length 242 [2023-11-29 00:32:06,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:32:06,568 INFO L225 Difference]: With dead ends: 1006 [2023-11-29 00:32:06,568 INFO L226 Difference]: Without dead ends: 799 [2023-11-29 00:32:06,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=553, Invalid=1609, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 00:32:06,570 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 920 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 1654 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:32:06,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1198 Invalid, 1895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1654 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 00:32:06,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-11-29 00:32:06,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 484. [2023-11-29 00:32:06,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 340 states have (on average 1.223529411764706) internal successors, (416), 340 states have internal predecessors, (416), 114 states have call successors, (114), 29 states have call predecessors, (114), 29 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-29 00:32:06,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 644 transitions. [2023-11-29 00:32:06,629 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 644 transitions. Word has length 242 [2023-11-29 00:32:06,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:32:06,630 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 644 transitions. [2023-11-29 00:32:06,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.0) internal successors, (115), 22 states have internal predecessors, (115), 6 states have call successors, (76), 4 states have call predecessors, (76), 6 states have return successors, (76), 6 states have call predecessors, (76), 6 states have call successors, (76) [2023-11-29 00:32:06,630 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 644 transitions. [2023-11-29 00:32:06,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-11-29 00:32:06,632 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:32:06,632 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:32:06,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 00:32:06,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 00:32:06,833 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:32:06,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:06,833 INFO L85 PathProgramCache]: Analyzing trace with hash 2047633182, now seen corresponding path program 1 times [2023-11-29 00:32:06,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:32:06,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069551075] [2023-11-29 00:32:06,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:06,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:32:06,860 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:32:06,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664146836] [2023-11-29 00:32:06,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:06,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:32:06,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:32:06,862 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:32:06,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 00:32:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:07,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:32:07,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:07,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 00:32:07,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:07,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:32:07,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069551075] [2023-11-29 00:32:07,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:32:07,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664146836] [2023-11-29 00:32:07,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664146836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:07,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:07,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:32:07,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162807371] [2023-11-29 00:32:07,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:07,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:32:07,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:32:07,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:32:07,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:32:07,558 INFO L87 Difference]: Start difference. First operand 484 states and 644 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:32:07,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:32:07,825 INFO L93 Difference]: Finished difference Result 911 states and 1221 transitions. [2023-11-29 00:32:07,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:32:07,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 243 [2023-11-29 00:32:07,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:32:07,830 INFO L225 Difference]: With dead ends: 911 [2023-11-29 00:32:07,830 INFO L226 Difference]: Without dead ends: 532 [2023-11-29 00:32:07,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:32:07,832 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 119 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:32:07,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 552 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:32:07,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2023-11-29 00:32:07,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 486. [2023-11-29 00:32:07,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 342 states have (on average 1.2222222222222223) internal successors, (418), 342 states have internal predecessors, (418), 114 states have call successors, (114), 29 states have call predecessors, (114), 29 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-29 00:32:07,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 646 transitions. [2023-11-29 00:32:07,894 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 646 transitions. Word has length 243 [2023-11-29 00:32:07,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:32:07,895 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 646 transitions. [2023-11-29 00:32:07,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:32:07,895 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 646 transitions. [2023-11-29 00:32:07,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-11-29 00:32:07,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:32:07,896 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:32:07,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 00:32:08,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 00:32:08,097 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:32:08,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:08,097 INFO L85 PathProgramCache]: Analyzing trace with hash -2113824796, now seen corresponding path program 1 times [2023-11-29 00:32:08,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:32:08,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012569725] [2023-11-29 00:32:08,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:08,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:32:08,122 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:32:08,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541727847] [2023-11-29 00:32:08,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:08,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:32:08,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:32:08,123 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:32:08,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 00:32:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:08,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:32:08,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 00:32:08,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:08,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:32:08,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012569725] [2023-11-29 00:32:08,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:32:08,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541727847] [2023-11-29 00:32:08,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541727847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:08,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:08,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:32:08,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624020596] [2023-11-29 00:32:08,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:08,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:08,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:32:08,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:08,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:32:08,607 INFO L87 Difference]: Start difference. First operand 486 states and 646 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:32:08,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:32:08,770 INFO L93 Difference]: Finished difference Result 865 states and 1157 transitions. [2023-11-29 00:32:08,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:32:08,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 243 [2023-11-29 00:32:08,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:32:08,774 INFO L225 Difference]: With dead ends: 865 [2023-11-29 00:32:08,775 INFO L226 Difference]: Without dead ends: 486 [2023-11-29 00:32:08,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 240 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 00:32:08,776 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 131 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:32:08,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 160 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:32:08,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-11-29 00:32:08,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2023-11-29 00:32:08,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 342 states have (on average 1.2017543859649122) internal successors, (411), 342 states have internal predecessors, (411), 114 states have call successors, (114), 29 states have call predecessors, (114), 29 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-29 00:32:08,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 639 transitions. [2023-11-29 00:32:08,868 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 639 transitions. Word has length 243 [2023-11-29 00:32:08,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:32:08,869 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 639 transitions. [2023-11-29 00:32:08,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:32:08,869 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 639 transitions. [2023-11-29 00:32:08,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-11-29 00:32:08,870 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:32:08,871 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:32:08,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 00:32:09,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 00:32:09,071 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:32:09,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:09,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1304478170, now seen corresponding path program 1 times [2023-11-29 00:32:09,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:32:09,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208755413] [2023-11-29 00:32:09,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:09,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:32:09,101 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:32:09,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1500090107] [2023-11-29 00:32:09,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:09,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:32:09,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:32:09,102 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:32:09,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 00:32:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:09,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 00:32:09,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:12,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1265 proven. 345 refuted. 0 times theorem prover too weak. 1202 trivial. 0 not checked. [2023-11-29 00:32:12,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:33:55,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 00:33:55,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:33:55,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208755413] [2023-11-29 00:33:55,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:33:55,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500090107] [2023-11-29 00:33:55,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500090107] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:33:55,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:33:55,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [26] total 34 [2023-11-29 00:33:55,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496044488] [2023-11-29 00:33:55,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:33:55,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:33:55,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:33:55,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:33:55,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=915, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 00:33:55,703 INFO L87 Difference]: Start difference. First operand 486 states and 639 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:34:12,168 WARN L293 SmtUtils]: Spent 16.21s on a formula simplification. DAG size of input: 712 DAG size of output: 716 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:34:30,210 WARN L293 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 678 DAG size of output: 677 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:34:42,806 WARN L293 SmtUtils]: Spent 8.45s on a formula simplification. DAG size of input: 679 DAG size of output: 678 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:35:03,640 WARN L293 SmtUtils]: Spent 12.60s on a formula simplification. DAG size of input: 691 DAG size of output: 690 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:35:20,575 WARN L293 SmtUtils]: Spent 6.55s on a formula simplification. DAG size of input: 701 DAG size of output: 701 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:35:32,512 WARN L293 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 703 DAG size of output: 703 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:35:57,131 WARN L293 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 704 DAG size of output: 704 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:36:50,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:37:07,945 WARN L293 SmtUtils]: Spent 7.41s on a formula simplification. DAG size of input: 701 DAG size of output: 701 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:37:40,331 WARN L293 SmtUtils]: Spent 7.36s on a formula simplification. DAG size of input: 696 DAG size of output: 696 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:37:41,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:37:57,397 WARN L293 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 697 DAG size of output: 697 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:38:11,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:38:11,347 INFO L93 Difference]: Finished difference Result 1121 states and 1479 transitions. [2023-11-29 00:38:11,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 00:38:11,349 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 243 [2023-11-29 00:38:11,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:38:11,353 INFO L225 Difference]: With dead ends: 1121 [2023-11-29 00:38:11,353 INFO L226 Difference]: Without dead ends: 742 [2023-11-29 00:38:11,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 266.7s TimeCoverageRelationStatistics Valid=447, Invalid=2633, Unknown=0, NotChecked=0, Total=3080 [2023-11-29 00:38:11,355 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 684 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:38:11,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 1100 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 21.7s Time] [2023-11-29 00:38:11,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2023-11-29 00:38:11,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 506. [2023-11-29 00:38:11,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 362 states have (on average 1.2154696132596685) internal successors, (440), 362 states have internal predecessors, (440), 114 states have call successors, (114), 29 states have call predecessors, (114), 29 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-29 00:38:11,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 668 transitions. [2023-11-29 00:38:11,443 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 668 transitions. Word has length 243 [2023-11-29 00:38:11,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:38:11,443 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 668 transitions. [2023-11-29 00:38:11,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:38:11,443 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 668 transitions. [2023-11-29 00:38:11,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-11-29 00:38:11,445 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:38:11,445 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:38:11,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 00:38:11,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 00:38:11,646 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:38:11,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:11,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1969420772, now seen corresponding path program 1 times [2023-11-29 00:38:11,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:11,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093369700] [2023-11-29 00:38:11,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:11,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:11,675 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:38:11,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907717894] [2023-11-29 00:38:11,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:11,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:38:11,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:38:11,677 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:38:11,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 00:38:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:11,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:38:11,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:38:12,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1311 proven. 72 refuted. 0 times theorem prover too weak. 1429 trivial. 0 not checked. [2023-11-29 00:38:12,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:38:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 39 proven. 72 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2023-11-29 00:38:13,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:13,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093369700] [2023-11-29 00:38:13,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:38:13,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907717894] [2023-11-29 00:38:13,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907717894] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:38:13,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:38:13,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-11-29 00:38:13,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153754159] [2023-11-29 00:38:13,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:38:13,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:38:13,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:13,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:38:13,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:38:13,166 INFO L87 Difference]: Start difference. First operand 506 states and 668 transitions. Second operand has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 4 states have call successors, (76), 3 states have call predecessors, (76), 5 states have return successors, (76), 4 states have call predecessors, (76), 4 states have call successors, (76) [2023-11-29 00:38:15,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:38:15,633 INFO L93 Difference]: Finished difference Result 2138 states and 2828 transitions. [2023-11-29 00:38:15,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 00:38:15,634 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 4 states have call successors, (76), 3 states have call predecessors, (76), 5 states have return successors, (76), 4 states have call predecessors, (76), 4 states have call successors, (76) Word has length 243 [2023-11-29 00:38:15,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:38:15,643 INFO L225 Difference]: With dead ends: 2138 [2023-11-29 00:38:15,643 INFO L226 Difference]: Without dead ends: 1739 [2023-11-29 00:38:15,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=241, Invalid=461, Unknown=0, NotChecked=0, Total=702 [2023-11-29 00:38:15,644 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 539 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:38:15,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 1125 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 00:38:15,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2023-11-29 00:38:15,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 891. [2023-11-29 00:38:15,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 651 states have (on average 1.2227342549923195) internal successors, (796), 651 states have internal predecessors, (796), 190 states have call successors, (190), 49 states have call predecessors, (190), 49 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2023-11-29 00:38:15,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1176 transitions. [2023-11-29 00:38:15,863 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1176 transitions. Word has length 243 [2023-11-29 00:38:15,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:38:15,863 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 1176 transitions. [2023-11-29 00:38:15,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 4 states have call successors, (76), 3 states have call predecessors, (76), 5 states have return successors, (76), 4 states have call predecessors, (76), 4 states have call successors, (76) [2023-11-29 00:38:15,864 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1176 transitions. [2023-11-29 00:38:15,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-11-29 00:38:15,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:38:15,865 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:38:15,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-29 00:38:16,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 00:38:16,066 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:38:16,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:16,066 INFO L85 PathProgramCache]: Analyzing trace with hash 159205566, now seen corresponding path program 1 times [2023-11-29 00:38:16,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:16,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259370865] [2023-11-29 00:38:16,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:16,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:16,091 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:38:16,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1799257186] [2023-11-29 00:38:16,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:16,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:38:16,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:38:16,093 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:38:16,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 00:38:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:16,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 00:38:16,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:38:23,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1210 proven. 522 refuted. 0 times theorem prover too weak. 1080 trivial. 0 not checked. [2023-11-29 00:38:23,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:41:01,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 99 proven. 426 refuted. 0 times theorem prover too weak. 2287 trivial. 0 not checked. [2023-11-29 00:41:01,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:41:01,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259370865] [2023-11-29 00:41:01,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:41:01,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799257186] [2023-11-29 00:41:01,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799257186] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:41:01,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:41:01,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 27] total 55 [2023-11-29 00:41:01,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201769498] [2023-11-29 00:41:01,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:41:01,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-11-29 00:41:01,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:41:01,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-11-29 00:41:01,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=788, Invalid=2181, Unknown=1, NotChecked=0, Total=2970 [2023-11-29 00:41:01,350 INFO L87 Difference]: Start difference. First operand 891 states and 1176 transitions. Second operand has 55 states, 53 states have (on average 2.811320754716981) internal successors, (149), 51 states have internal predecessors, (149), 13 states have call successors, (74), 8 states have call predecessors, (74), 16 states have return successors, (75), 13 states have call predecessors, (75), 13 states have call successors, (75) [2023-11-29 00:41:26,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2023-11-29 00:41:26,925 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-11-29 00:41:26,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-29 00:41:26,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 433 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1843 ImplicationChecksByTransitivity, 69.9s TimeCoverageRelationStatistics Valid=1374, Invalid=3737, Unknown=1, NotChecked=0, Total=5112 [2023-11-29 00:41:26,928 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 28 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:41:26,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 591 Invalid, 1517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 20.2s Time] [2023-11-29 00:41:26,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 00:41:27,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:27,129 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:247) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:353) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 47 more [2023-11-29 00:41:27,132 INFO L158 Benchmark]: Toolchain (without parser) took 607604.80ms. Allocated memory was 169.9MB in the beginning and 524.3MB in the end (delta: 354.4MB). Free memory was 137.4MB in the beginning and 378.2MB in the end (delta: -240.8MB). Peak memory consumption was 115.7MB. Max. memory is 16.1GB. [2023-11-29 00:41:27,132 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory was 89.6MB in the beginning and 89.5MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:41:27,132 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.06ms. Allocated memory is still 169.9MB. Free memory was 137.4MB in the beginning and 120.1MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 00:41:27,133 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.13ms. Allocated memory is still 169.9MB. Free memory was 120.1MB in the beginning and 114.4MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 00:41:27,133 INFO L158 Benchmark]: Boogie Preprocessor took 79.03ms. Allocated memory is still 169.9MB. Free memory was 114.4MB in the beginning and 106.4MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 00:41:27,133 INFO L158 Benchmark]: RCFGBuilder took 633.02ms. Allocated memory is still 169.9MB. Free memory was 105.9MB in the beginning and 124.3MB in the end (delta: -18.4MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2023-11-29 00:41:27,134 INFO L158 Benchmark]: TraceAbstraction took 606477.50ms. Allocated memory was 169.9MB in the beginning and 524.3MB in the end (delta: 354.4MB). Free memory was 123.5MB in the beginning and 378.2MB in the end (delta: -254.7MB). Peak memory consumption was 100.0MB. Max. memory is 16.1GB. [2023-11-29 00:41:27,135 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory was 89.6MB in the beginning and 89.5MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 337.06ms. Allocated memory is still 169.9MB. Free memory was 137.4MB in the beginning and 120.1MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.13ms. Allocated memory is still 169.9MB. Free memory was 120.1MB in the beginning and 114.4MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.03ms. Allocated memory is still 169.9MB. Free memory was 114.4MB in the beginning and 106.4MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 633.02ms. Allocated memory is still 169.9MB. Free memory was 105.9MB in the beginning and 124.3MB in the end (delta: -18.4MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. * TraceAbstraction took 606477.50ms. Allocated memory was 169.9MB in the beginning and 524.3MB in the end (delta: 354.4MB). Free memory was 123.5MB in the beginning and 378.2MB in the end (delta: -254.7MB). Peak memory consumption was 100.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/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_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-29.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/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 7e64a2d21e15132e000697ca4f4f7d29d25b5e3294a251108bc191e4406c56ac --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:41:28,870 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:41:28,934 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 00:41:28,948 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:41:28,949 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:41:28,974 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:41:28,975 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:41:28,975 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:41:28,976 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:41:28,977 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:41:28,977 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:41:28,978 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:41:28,978 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:41:28,979 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:41:28,980 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:41:28,980 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:41:28,981 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:41:28,981 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:41:28,982 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:41:28,982 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:41:28,983 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:41:28,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:41:28,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:41:28,984 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:41:28,984 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 00:41:28,984 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 00:41:28,985 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:41:28,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:41:28,986 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:41:28,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:41:28,987 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:41:28,987 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:41:28,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:41:28,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:41:28,988 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:41:28,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:41:28,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:41:28,989 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 00:41:28,989 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 00:41:28,989 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:41:28,989 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:41:28,990 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:41:28,990 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:41:28,990 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:41:28,990 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 00:41:28,991 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_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e64a2d21e15132e000697ca4f4f7d29d25b5e3294a251108bc191e4406c56ac [2023-11-29 00:41:29,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:41:29,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:41:29,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:41:29,295 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:41:29,295 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:41:29,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-29.i [2023-11-29 00:41:32,026 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:41:32,255 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:41:32,256 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-29.i [2023-11-29 00:41:32,267 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/data/e6204a0c5/84e79808c54b487e9c3b6a776d9cd76a/FLAGe671dcc2d [2023-11-29 00:41:32,283 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/data/e6204a0c5/84e79808c54b487e9c3b6a776d9cd76a [2023-11-29 00:41:32,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:41:32,288 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:41:32,289 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:41:32,289 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:41:32,293 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:41:32,293 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:41:32" (1/1) ... [2023-11-29 00:41:32,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20827801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:32, skipping insertion in model container [2023-11-29 00:41:32,294 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:41:32" (1/1) ... [2023-11-29 00:41:32,333 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:41:32,491 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_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-29.i[916,929] [2023-11-29 00:41:32,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:41:32,591 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:41:32,603 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_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-29.i[916,929] [2023-11-29 00:41:32,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:41:32,671 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:41:32,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:32 WrapperNode [2023-11-29 00:41:32,672 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:41:32,673 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:41:32,673 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:41:32,674 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:41:32,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:32" (1/1) ... [2023-11-29 00:41:32,703 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:32" (1/1) ... [2023-11-29 00:41:32,734 INFO L138 Inliner]: procedures = 27, calls = 51, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 246 [2023-11-29 00:41:32,734 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:41:32,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:41:32,735 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:41:32,736 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:41:32,747 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:32" (1/1) ... [2023-11-29 00:41:32,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:32" (1/1) ... [2023-11-29 00:41:32,754 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:32" (1/1) ... [2023-11-29 00:41:32,769 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 00:41:32,770 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:32" (1/1) ... [2023-11-29 00:41:32,770 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:32" (1/1) ... [2023-11-29 00:41:32,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:32" (1/1) ... [2023-11-29 00:41:32,790 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:32" (1/1) ... [2023-11-29 00:41:32,794 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:32" (1/1) ... [2023-11-29 00:41:32,797 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:32" (1/1) ... [2023-11-29 00:41:32,802 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:41:32,803 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:41:32,803 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:41:32,803 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:41:32,804 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:32" (1/1) ... [2023-11-29 00:41:32,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:41:32,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:41:32,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:41:32,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:41:32,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:41:32,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 00:41:32,869 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 00:41:32,869 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 00:41:32,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:41:32,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:41:32,972 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:41:32,975 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:41:46,322 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:41:46,376 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:41:46,376 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:41:46,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:41:46 BoogieIcfgContainer [2023-11-29 00:41:46,377 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:41:46,379 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:41:46,380 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:41:46,382 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:41:46,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:41:32" (1/3) ... [2023-11-29 00:41:46,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d92ba4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:41:46, skipping insertion in model container [2023-11-29 00:41:46,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:32" (2/3) ... [2023-11-29 00:41:46,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d92ba4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:41:46, skipping insertion in model container [2023-11-29 00:41:46,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:41:46" (3/3) ... [2023-11-29 00:41:46,385 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-29.i [2023-11-29 00:41:46,399 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:41:46,399 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:41:46,442 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:41:46,447 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;@531b2328, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:41:46,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:41:46,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 61 states have (on average 1.4262295081967213) internal successors, (87), 62 states have internal predecessors, (87), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 00:41:46,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-11-29 00:41:46,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:41:46,470 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:41:46,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:41:46,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:46,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1801781256, now seen corresponding path program 1 times [2023-11-29 00:41:46,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:41:46,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971503491] [2023-11-29 00:41:46,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:46,489 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:41:46,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:41:46,491 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:41:46,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 00:41:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:47,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 00:41:47,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:41:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 818 proven. 0 refuted. 0 times theorem prover too weak. 1994 trivial. 0 not checked. [2023-11-29 00:41:47,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:41:47,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:41:47,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971503491] [2023-11-29 00:41:47,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971503491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:41:47,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:41:47,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:41:47,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957213515] [2023-11-29 00:41:47,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:41:47,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:41:47,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:41:47,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:41:47,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:41:47,892 INFO L87 Difference]: Start difference. First operand has 102 states, 61 states have (on average 1.4262295081967213) internal successors, (87), 62 states have internal predecessors, (87), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-11-29 00:41:52,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.39s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:41:52,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:41:52,356 INFO L93 Difference]: Finished difference Result 201 states and 362 transitions. [2023-11-29 00:41:52,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:41:52,465 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 236 [2023-11-29 00:41:52,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:41:52,472 INFO L225 Difference]: With dead ends: 201 [2023-11-29 00:41:52,472 INFO L226 Difference]: Without dead ends: 100 [2023-11-29 00:41:52,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 235 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 00:41:52,478 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:41:52,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 155 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2023-11-29 00:41:52,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-29 00:41:52,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-11-29 00:41:52,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 60 states have (on average 1.3666666666666667) internal successors, (82), 60 states have internal predecessors, (82), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 00:41:52,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 158 transitions. [2023-11-29 00:41:52,523 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 158 transitions. Word has length 236 [2023-11-29 00:41:52,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:41:52,524 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 158 transitions. [2023-11-29 00:41:52,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-11-29 00:41:52,524 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 158 transitions. [2023-11-29 00:41:52,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-11-29 00:41:52,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:41:52,531 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:41:52,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:41:52,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:41:52,732 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:41:52,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:52,733 INFO L85 PathProgramCache]: Analyzing trace with hash 525306832, now seen corresponding path program 1 times [2023-11-29 00:41:52,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:41:52,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606597713] [2023-11-29 00:41:52,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:52,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:41:52,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:41:52,735 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:41:52,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 00:41:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:53,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:41:53,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:41:58,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-29 00:41:58,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:41:58,622 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:41:58,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606597713] [2023-11-29 00:41:58,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606597713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:41:58,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:41:58,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:41:58,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189741213] [2023-11-29 00:41:58,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:41:58,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:41:58,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:41:58,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:41:58,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:41:58,626 INFO L87 Difference]: Start difference. First operand 100 states and 158 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:42:04,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:08,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:12,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:16,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:20,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:24,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:28,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:28,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:42:28,844 INFO L93 Difference]: Finished difference Result 299 states and 473 transitions. [2023-11-29 00:42:28,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:42:28,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 236 [2023-11-29 00:42:28,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:42:28,980 INFO L225 Difference]: With dead ends: 299 [2023-11-29 00:42:28,980 INFO L226 Difference]: Without dead ends: 200 [2023-11-29 00:42:28,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:42:28,984 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 138 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 77 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:42:28,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 519 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 107 Invalid, 7 Unknown, 0 Unchecked, 30.0s Time] [2023-11-29 00:42:28,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-29 00:42:29,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 171. [2023-11-29 00:42:29,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 92 states have (on average 1.2608695652173914) internal successors, (116), 92 states have internal predecessors, (116), 76 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 00:42:29,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 268 transitions. [2023-11-29 00:42:29,033 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 268 transitions. Word has length 236 [2023-11-29 00:42:29,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:42:29,034 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 268 transitions. [2023-11-29 00:42:29,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-29 00:42:29,035 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 268 transitions. [2023-11-29 00:42:29,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-11-29 00:42:29,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:42:29,041 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:42:29,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 00:42:29,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:42:29,243 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:42:29,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:29,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1096043962, now seen corresponding path program 1 times [2023-11-29 00:42:29,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:42:29,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132504964] [2023-11-29 00:42:29,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:29,245 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:42:29,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:42:29,246 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:42:29,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 00:42:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:30,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:42:30,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:35,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 76 proven. 216 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-11-29 00:42:35,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:42:36,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2023-11-29 00:42:36,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:42:36,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132504964] [2023-11-29 00:42:36,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132504964] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:42:36,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:42:36,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 12 [2023-11-29 00:42:36,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799377563] [2023-11-29 00:42:36,579 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:42:36,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:42:36,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:42:36,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:42:36,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:42:36,583 INFO L87 Difference]: Start difference. First operand 171 states and 268 transitions. Second operand has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 3 states have call successors, (75), 3 states have call predecessors, (75), 5 states have return successors, (76), 2 states have call predecessors, (76), 3 states have call successors, (76) [2023-11-29 00:42:42,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.80s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:45,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:49,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.80s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:53,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.42s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:57,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:01,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:05,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:09,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:13,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:17,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:21,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:25,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:29,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:33,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:37,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:41,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:45,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:49,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:53,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:43:57,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:44:01,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:44:04,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:04,440 INFO L93 Difference]: Finished difference Result 502 states and 759 transitions. [2023-11-29 00:44:04,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 00:44:04,441 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 3 states have call successors, (75), 3 states have call predecessors, (75), 5 states have return successors, (76), 2 states have call predecessors, (76), 3 states have call successors, (76) Word has length 237 [2023-11-29 00:44:04,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:04,446 INFO L225 Difference]: With dead ends: 502 [2023-11-29 00:44:04,447 INFO L226 Difference]: Without dead ends: 403 [2023-11-29 00:44:04,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 465 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=333, Invalid=857, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 00:44:04,449 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 515 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 195 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:04,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 413 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 389 Invalid, 18 Unknown, 0 Unchecked, 86.4s Time] [2023-11-29 00:44:04,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2023-11-29 00:44:04,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 196. [2023-11-29 00:44:04,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 113 states have (on average 1.2212389380530972) internal successors, (138), 113 states have internal predecessors, (138), 76 states have call successors, (76), 6 states have call predecessors, (76), 6 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 00:44:04,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 290 transitions. [2023-11-29 00:44:04,513 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 290 transitions. Word has length 237 [2023-11-29 00:44:04,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:04,514 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 290 transitions. [2023-11-29 00:44:04,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 3 states have call successors, (75), 3 states have call predecessors, (75), 5 states have return successors, (76), 2 states have call predecessors, (76), 3 states have call successors, (76) [2023-11-29 00:44:04,515 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 290 transitions. [2023-11-29 00:44:04,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-29 00:44:04,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:04,519 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:44:04,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 00:44:04,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:04,720 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:04,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:04,720 INFO L85 PathProgramCache]: Analyzing trace with hash -2028231376, now seen corresponding path program 1 times [2023-11-29 00:44:04,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:04,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329413663] [2023-11-29 00:44:04,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:04,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:04,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:04,722 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:04,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d03e11-f1fa-439c-b8a1-46ac3204d7b2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 00:44:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:05,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:44:05,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:13,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 37 proven. 111 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2023-11-29 00:44:13,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:44:15,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2023-11-29 00:44:15,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:15,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329413663] [2023-11-29 00:44:15,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329413663] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:44:15,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:44:15,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-11-29 00:44:15,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990878572] [2023-11-29 00:44:15,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:44:15,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:44:15,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:15,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:44:15,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:44:15,898 INFO L87 Difference]: Start difference. First operand 196 states and 290 transitions. Second operand has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 12 states have internal predecessors, (103), 4 states have call successors, (76), 3 states have call predecessors, (76), 4 states have return successors, (76), 2 states have call predecessors, (76), 4 states have call successors, (76) [2023-11-29 00:44:22,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:44:23,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:44:27,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.15s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:44:31,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.43s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:44:35,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:44:39,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:44:43,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:44:47,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:44:51,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:44:55,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:44:59,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:45:03,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:45:08,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:45:12,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:45:16,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:45:20,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:45:24,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:45:28,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:45:32,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:45:36,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []