./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.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_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/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_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/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_e62641a4-957e-4476-b1e9-73a4770c2ed1/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 6426d30449276f41292d944281f990de88775c0c256461a4ce5af87d5d4d093f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:36:25,413 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:36:25,475 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:36:25,480 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:36:25,481 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:36:25,503 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:36:25,503 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:36:25,504 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:36:25,504 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:36:25,505 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:36:25,505 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:36:25,506 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:36:25,507 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:36:25,507 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:36:25,508 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:36:25,508 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:36:25,509 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:36:25,509 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:36:25,510 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:36:25,510 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:36:25,511 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:36:25,511 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:36:25,512 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:36:25,512 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:36:25,513 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:36:25,513 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:36:25,514 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:36:25,514 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:36:25,515 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:36:25,515 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:36:25,515 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:36:25,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:36:25,516 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:36:25,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:36:25,517 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:36:25,517 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:36:25,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:36:25,518 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:36:25,518 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:36:25,518 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:36:25,518 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:36:25,519 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:36:25,519 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_e62641a4-957e-4476-b1e9-73a4770c2ed1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6426d30449276f41292d944281f990de88775c0c256461a4ce5af87d5d4d093f [2023-11-29 06:36:25,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:36:25,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:36:25,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:36:25,772 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:36:25,772 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:36:25,774 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i [2023-11-29 06:36:28,553 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:36:28,748 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:36:28,749 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i [2023-11-29 06:36:28,758 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/data/970cccb07/24877bf7e2af437d863b60c59532cb13/FLAG04d0f8e9a [2023-11-29 06:36:28,772 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/data/970cccb07/24877bf7e2af437d863b60c59532cb13 [2023-11-29 06:36:28,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:36:28,776 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:36:28,777 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:36:28,777 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:36:28,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:36:28,782 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:36:28" (1/1) ... [2023-11-29 06:36:28,783 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671e8fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:28, skipping insertion in model container [2023-11-29 06:36:28,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:36:28" (1/1) ... [2023-11-29 06:36:28,814 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:36:28,951 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_e62641a4-957e-4476-b1e9-73a4770c2ed1/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i[916,929] [2023-11-29 06:36:29,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:36:29,032 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:36:29,042 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_e62641a4-957e-4476-b1e9-73a4770c2ed1/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i[916,929] [2023-11-29 06:36:29,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:36:29,101 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:36:29,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:29 WrapperNode [2023-11-29 06:36:29,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:36:29,103 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:36:29,103 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:36:29,103 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:36:29,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:29" (1/1) ... [2023-11-29 06:36:29,124 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:29" (1/1) ... [2023-11-29 06:36:29,170 INFO L138 Inliner]: procedures = 26, calls = 153, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 390 [2023-11-29 06:36:29,171 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:36:29,172 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:36:29,172 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:36:29,172 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:36:29,181 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:29" (1/1) ... [2023-11-29 06:36:29,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:29" (1/1) ... [2023-11-29 06:36:29,189 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:29" (1/1) ... [2023-11-29 06:36:29,215 INFO L175 MemorySlicer]: Split 123 memory accesses to 4 slices as follows [2, 38, 12, 71]. 58 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 2, 4]. The 14 writes are split as follows [0, 8, 2, 4]. [2023-11-29 06:36:29,215 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:29" (1/1) ... [2023-11-29 06:36:29,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:29" (1/1) ... [2023-11-29 06:36:29,235 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:29" (1/1) ... [2023-11-29 06:36:29,239 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:29" (1/1) ... [2023-11-29 06:36:29,242 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:29" (1/1) ... [2023-11-29 06:36:29,246 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:29" (1/1) ... [2023-11-29 06:36:29,251 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:36:29,252 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:36:29,252 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:36:29,253 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:36:29,253 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:29" (1/1) ... [2023-11-29 06:36:29,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:36:29,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:29,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:36:29,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:36:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:36:29,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 06:36:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 06:36:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 06:36:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 06:36:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 06:36:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 06:36:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 06:36:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 06:36:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 06:36:29,315 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 06:36:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:36:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:36:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 06:36:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 06:36:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:36:29,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:36:29,438 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:36:29,440 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:36:29,912 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:36:29,940 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:36:29,940 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 06:36:29,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:36:29 BoogieIcfgContainer [2023-11-29 06:36:29,941 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:36:29,944 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:36:29,944 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:36:29,947 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:36:29,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:36:28" (1/3) ... [2023-11-29 06:36:29,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e355d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:36:29, skipping insertion in model container [2023-11-29 06:36:29,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:36:29" (2/3) ... [2023-11-29 06:36:29,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e355d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:36:29, skipping insertion in model container [2023-11-29 06:36:29,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:36:29" (3/3) ... [2023-11-29 06:36:29,950 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-12.i [2023-11-29 06:36:29,965 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:36:29,965 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:36:30,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:36:30,015 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;@6480a0a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:36:30,015 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:36:30,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 73 states have internal predecessors, (103), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:36:30,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-29 06:36:30,032 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:30,033 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:30,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:30,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:30,038 INFO L85 PathProgramCache]: Analyzing trace with hash 403899770, now seen corresponding path program 1 times [2023-11-29 06:36:30,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:30,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809309964] [2023-11-29 06:36:30,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:30,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:30,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:30,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809309964] [2023-11-29 06:36:30,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 06:36:30,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268395622] [2023-11-29 06:36:30,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:30,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:30,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:30,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:30,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:36:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:30,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 06:36:30,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:30,467 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-11-29 06:36:30,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:30,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268395622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:30,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:30,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:36:30,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544337269] [2023-11-29 06:36:30,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:30,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:36:30,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:30,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:36:30,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:36:30,508 INFO L87 Difference]: Start difference. First operand has 91 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 73 states have internal predecessors, (103), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-29 06:36:30,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:30,550 INFO L93 Difference]: Finished difference Result 173 states and 274 transitions. [2023-11-29 06:36:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:36:30,556 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 112 [2023-11-29 06:36:30,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:30,565 INFO L225 Difference]: With dead ends: 173 [2023-11-29 06:36:30,565 INFO L226 Difference]: Without dead ends: 83 [2023-11-29 06:36:30,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:36:30,573 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:30,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:36:30,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-29 06:36:30,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-11-29 06:36:30,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.323076923076923) internal successors, (86), 65 states have internal predecessors, (86), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:36:30,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 118 transitions. [2023-11-29 06:36:30,621 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 118 transitions. Word has length 112 [2023-11-29 06:36:30,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:30,621 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 118 transitions. [2023-11-29 06:36:30,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-29 06:36:30,622 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 118 transitions. [2023-11-29 06:36:30,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-29 06:36:30,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:30,625 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:30,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:36:30,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 06:36:30,826 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:30,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:30,827 INFO L85 PathProgramCache]: Analyzing trace with hash 749419866, now seen corresponding path program 1 times [2023-11-29 06:36:30,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:30,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821136538] [2023-11-29 06:36:30,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:30,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:30,894 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:30,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856216798] [2023-11-29 06:36:30,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:30,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:30,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:30,896 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:30,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:36:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:31,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:36:31,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:31,119 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:36:31,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:31,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:31,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821136538] [2023-11-29 06:36:31,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:31,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856216798] [2023-11-29 06:36:31,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856216798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:31,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:31,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:36:31,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413760571] [2023-11-29 06:36:31,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:31,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:36:31,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:31,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:36:31,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:36:31,123 INFO L87 Difference]: Start difference. First operand 83 states and 118 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:31,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:31,167 INFO L93 Difference]: Finished difference Result 165 states and 235 transitions. [2023-11-29 06:36:31,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:36:31,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 112 [2023-11-29 06:36:31,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:31,171 INFO L225 Difference]: With dead ends: 165 [2023-11-29 06:36:31,171 INFO L226 Difference]: Without dead ends: 83 [2023-11-29 06:36:31,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:36:31,174 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 45 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:31,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 286 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:36:31,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-29 06:36:31,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-11-29 06:36:31,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 65 states have internal predecessors, (85), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:36:31,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2023-11-29 06:36:31,187 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 112 [2023-11-29 06:36:31,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:31,189 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2023-11-29 06:36:31,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:31,189 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2023-11-29 06:36:31,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 06:36:31,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:31,192 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:31,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 06:36:31,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:31,395 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:31,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:31,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1850359588, now seen corresponding path program 1 times [2023-11-29 06:36:31,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:31,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349181938] [2023-11-29 06:36:31,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:31,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:31,459 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:31,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [93738554] [2023-11-29 06:36:31,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:31,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:31,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:31,461 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:31,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:36:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:31,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:36:31,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:31,660 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:36:31,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:31,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:31,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349181938] [2023-11-29 06:36:31,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:31,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93738554] [2023-11-29 06:36:31,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93738554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:31,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:31,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:36:31,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300615372] [2023-11-29 06:36:31,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:31,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:36:31,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:31,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:36:31,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:36:31,664 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:31,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:31,723 INFO L93 Difference]: Finished difference Result 177 states and 250 transitions. [2023-11-29 06:36:31,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:36:31,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 114 [2023-11-29 06:36:31,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:31,725 INFO L225 Difference]: With dead ends: 177 [2023-11-29 06:36:31,726 INFO L226 Difference]: Without dead ends: 95 [2023-11-29 06:36:31,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:36:31,728 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 65 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:31,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 410 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:36:31,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-29 06:36:31,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 86. [2023-11-29 06:36:31,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.2941176470588236) internal successors, (88), 68 states have internal predecessors, (88), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:36:31,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 120 transitions. [2023-11-29 06:36:31,740 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 120 transitions. Word has length 114 [2023-11-29 06:36:31,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:31,741 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 120 transitions. [2023-11-29 06:36:31,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:31,741 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 120 transitions. [2023-11-29 06:36:31,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 06:36:31,743 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:31,743 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:31,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:36:31,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:31,951 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:31,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:31,952 INFO L85 PathProgramCache]: Analyzing trace with hash -993604616, now seen corresponding path program 1 times [2023-11-29 06:36:31,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:31,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703507425] [2023-11-29 06:36:31,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:31,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:31,999 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:31,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [696435423] [2023-11-29 06:36:31,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:31,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:32,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:32,001 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:32,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:36:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:32,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 06:36:32,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:32,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2023-11-29 06:36:32,285 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:32,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 28 [2023-11-29 06:36:32,314 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:36:32,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:32,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:32,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703507425] [2023-11-29 06:36:32,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:32,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696435423] [2023-11-29 06:36:32,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696435423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:32,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:32,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:36:32,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463727798] [2023-11-29 06:36:32,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:32,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:36:32,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:32,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:36:32,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:36:32,318 INFO L87 Difference]: Start difference. First operand 86 states and 120 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:32,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:32,437 INFO L93 Difference]: Finished difference Result 126 states and 170 transitions. [2023-11-29 06:36:32,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:36:32,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 116 [2023-11-29 06:36:32,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:32,440 INFO L225 Difference]: With dead ends: 126 [2023-11-29 06:36:32,440 INFO L226 Difference]: Without dead ends: 124 [2023-11-29 06:36:32,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:36:32,442 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 58 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:32,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 514 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:36:32,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-29 06:36:32,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 110. [2023-11-29 06:36:32,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 92 states have (on average 1.2934782608695652) internal successors, (119), 92 states have internal predecessors, (119), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:36:32,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 151 transitions. [2023-11-29 06:36:32,453 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 151 transitions. Word has length 116 [2023-11-29 06:36:32,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:32,454 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 151 transitions. [2023-11-29 06:36:32,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:32,454 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 151 transitions. [2023-11-29 06:36:32,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 06:36:32,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:32,456 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:32,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:36:32,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:32,657 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:32,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:32,658 INFO L85 PathProgramCache]: Analyzing trace with hash 604343881, now seen corresponding path program 1 times [2023-11-29 06:36:32,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:32,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873761910] [2023-11-29 06:36:32,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:32,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:32,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:32,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165166609] [2023-11-29 06:36:32,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:32,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:32,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:32,699 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:32,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:36:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:32,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-29 06:36:32,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:33,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 06:36:33,443 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:33,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2023-11-29 06:36:34,135 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:34,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2023-11-29 06:36:34,416 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:34,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 34 [2023-11-29 06:36:34,484 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 72 proven. 144 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-29 06:36:34,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:36:35,615 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 156 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-29 06:36:35,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:35,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873761910] [2023-11-29 06:36:35,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:35,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165166609] [2023-11-29 06:36:35,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165166609] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:36:35,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:36:35,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 46 [2023-11-29 06:36:35,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994626954] [2023-11-29 06:36:35,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:36:35,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 06:36:35,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:35,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 06:36:35,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1675, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 06:36:35,621 INFO L87 Difference]: Start difference. First operand 110 states and 151 transitions. Second operand has 46 states, 38 states have (on average 2.710526315789474) internal successors, (103), 40 states have internal predecessors, (103), 10 states have call successors, (32), 6 states have call predecessors, (32), 10 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) [2023-11-29 06:36:37,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:37,119 INFO L93 Difference]: Finished difference Result 182 states and 232 transitions. [2023-11-29 06:36:37,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-29 06:36:37,119 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 38 states have (on average 2.710526315789474) internal successors, (103), 40 states have internal predecessors, (103), 10 states have call successors, (32), 6 states have call predecessors, (32), 10 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) Word has length 117 [2023-11-29 06:36:37,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:37,121 INFO L225 Difference]: With dead ends: 182 [2023-11-29 06:36:37,121 INFO L226 Difference]: Without dead ends: 180 [2023-11-29 06:36:37,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1001, Invalid=3691, Unknown=0, NotChecked=0, Total=4692 [2023-11-29 06:36:37,125 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 798 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:37,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 1604 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 06:36:37,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-29 06:36:37,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 126. [2023-11-29 06:36:37,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 104 states have (on average 1.2596153846153846) internal successors, (131), 104 states have internal predecessors, (131), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:36:37,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 163 transitions. [2023-11-29 06:36:37,141 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 163 transitions. Word has length 117 [2023-11-29 06:36:37,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:37,142 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 163 transitions. [2023-11-29 06:36:37,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 38 states have (on average 2.710526315789474) internal successors, (103), 40 states have internal predecessors, (103), 10 states have call successors, (32), 6 states have call predecessors, (32), 10 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) [2023-11-29 06:36:37,143 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 163 transitions. [2023-11-29 06:36:37,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 06:36:37,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:37,145 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:37,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:36:37,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:37,350 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:37,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:37,351 INFO L85 PathProgramCache]: Analyzing trace with hash -538292957, now seen corresponding path program 1 times [2023-11-29 06:36:37,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:37,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334149919] [2023-11-29 06:36:37,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:37,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:37,380 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:37,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998250747] [2023-11-29 06:36:37,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:37,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:37,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:37,382 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:37,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:36:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:37,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-29 06:36:37,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:37,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 06:36:37,942 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:37,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2023-11-29 06:36:38,410 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:38,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2023-11-29 06:36:38,602 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:38,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 34 [2023-11-29 06:36:38,671 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 72 proven. 144 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-29 06:36:38,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:36:39,582 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 156 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-29 06:36:39,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:39,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334149919] [2023-11-29 06:36:39,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:39,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998250747] [2023-11-29 06:36:39,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998250747] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:36:39,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:36:39,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2023-11-29 06:36:39,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513097196] [2023-11-29 06:36:39,583 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:36:39,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 06:36:39,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:39,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 06:36:39,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=1856, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 06:36:39,586 INFO L87 Difference]: Start difference. First operand 126 states and 163 transitions. Second operand has 48 states, 40 states have (on average 2.625) internal successors, (105), 42 states have internal predecessors, (105), 10 states have call successors, (32), 6 states have call predecessors, (32), 10 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) [2023-11-29 06:36:41,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:41,552 INFO L93 Difference]: Finished difference Result 202 states and 253 transitions. [2023-11-29 06:36:41,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-29 06:36:41,553 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 40 states have (on average 2.625) internal successors, (105), 42 states have internal predecessors, (105), 10 states have call successors, (32), 6 states have call predecessors, (32), 10 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) Word has length 118 [2023-11-29 06:36:41,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:41,555 INFO L225 Difference]: With dead ends: 202 [2023-11-29 06:36:41,555 INFO L226 Difference]: Without dead ends: 200 [2023-11-29 06:36:41,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1854 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1343, Invalid=5797, Unknown=0, NotChecked=0, Total=7140 [2023-11-29 06:36:41,558 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 547 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:41,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1539 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 06:36:41,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-29 06:36:41,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 128. [2023-11-29 06:36:41,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 106 states have (on average 1.2641509433962264) internal successors, (134), 106 states have internal predecessors, (134), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:36:41,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 166 transitions. [2023-11-29 06:36:41,568 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 166 transitions. Word has length 118 [2023-11-29 06:36:41,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:41,569 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 166 transitions. [2023-11-29 06:36:41,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 40 states have (on average 2.625) internal successors, (105), 42 states have internal predecessors, (105), 10 states have call successors, (32), 6 states have call predecessors, (32), 10 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) [2023-11-29 06:36:41,569 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 166 transitions. [2023-11-29 06:36:41,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 06:36:41,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:41,571 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:41,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:36:41,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:41,772 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:41,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:41,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1566305001, now seen corresponding path program 1 times [2023-11-29 06:36:41,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:41,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433757922] [2023-11-29 06:36:41,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:41,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:41,800 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:41,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1233951467] [2023-11-29 06:36:41,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:41,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:41,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:41,802 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:41,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:36:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:41,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:36:41,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:41,979 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:41,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2023-11-29 06:36:41,986 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:36:41,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:41,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:41,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433757922] [2023-11-29 06:36:41,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:41,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233951467] [2023-11-29 06:36:41,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233951467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:41,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:41,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:36:41,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067973255] [2023-11-29 06:36:41,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:41,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:36:41,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:41,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:36:41,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:36:41,988 INFO L87 Difference]: Start difference. First operand 128 states and 166 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:42,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:42,067 INFO L93 Difference]: Finished difference Result 348 states and 443 transitions. [2023-11-29 06:36:42,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:36:42,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 119 [2023-11-29 06:36:42,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:42,070 INFO L225 Difference]: With dead ends: 348 [2023-11-29 06:36:42,070 INFO L226 Difference]: Without dead ends: 221 [2023-11-29 06:36:42,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:36:42,072 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 83 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:42,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 474 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:36:42,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-11-29 06:36:42,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 204. [2023-11-29 06:36:42,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 171 states have (on average 1.2280701754385965) internal successors, (210), 172 states have internal predecessors, (210), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-29 06:36:42,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 254 transitions. [2023-11-29 06:36:42,089 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 254 transitions. Word has length 119 [2023-11-29 06:36:42,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:42,090 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 254 transitions. [2023-11-29 06:36:42,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:42,090 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 254 transitions. [2023-11-29 06:36:42,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 06:36:42,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:42,092 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:42,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 06:36:42,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:42,299 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:42,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:42,299 INFO L85 PathProgramCache]: Analyzing trace with hash -445192402, now seen corresponding path program 1 times [2023-11-29 06:36:42,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:42,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569384940] [2023-11-29 06:36:42,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:42,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:42,326 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:42,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [235346584] [2023-11-29 06:36:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:42,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:42,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:42,327 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:42,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:36:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:42,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 06:36:42,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:42,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2023-11-29 06:36:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 225 proven. 30 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-11-29 06:36:42,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:36:42,777 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-29 06:36:42,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:42,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569384940] [2023-11-29 06:36:42,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:42,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235346584] [2023-11-29 06:36:42,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235346584] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:36:42,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:36:42,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-11-29 06:36:42,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027433199] [2023-11-29 06:36:42,779 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:36:42,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:36:42,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:42,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:36:42,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:36:42,780 INFO L87 Difference]: Start difference. First operand 204 states and 254 transitions. Second operand has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 2 states have call predecessors, (27), 4 states have call successors, (27) [2023-11-29 06:36:43,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:43,038 INFO L93 Difference]: Finished difference Result 417 states and 516 transitions. [2023-11-29 06:36:43,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:36:43,039 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 2 states have call predecessors, (27), 4 states have call successors, (27) Word has length 119 [2023-11-29 06:36:43,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:43,041 INFO L225 Difference]: With dead ends: 417 [2023-11-29 06:36:43,042 INFO L226 Difference]: Without dead ends: 214 [2023-11-29 06:36:43,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 227 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:36:43,043 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 250 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:43,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 343 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:36:43,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-29 06:36:43,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 153. [2023-11-29 06:36:43,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 130 states have (on average 1.2307692307692308) internal successors, (160), 130 states have internal predecessors, (160), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:36:43,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 192 transitions. [2023-11-29 06:36:43,056 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 192 transitions. Word has length 119 [2023-11-29 06:36:43,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:43,057 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 192 transitions. [2023-11-29 06:36:43,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 2 states have call predecessors, (27), 4 states have call successors, (27) [2023-11-29 06:36:43,057 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 192 transitions. [2023-11-29 06:36:43,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 06:36:43,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:43,058 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:43,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 06:36:43,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 06:36:43,262 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:43,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:43,263 INFO L85 PathProgramCache]: Analyzing trace with hash -437810584, now seen corresponding path program 1 times [2023-11-29 06:36:43,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:43,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196350361] [2023-11-29 06:36:43,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:43,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:43,283 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:43,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752309540] [2023-11-29 06:36:43,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:43,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:43,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:43,285 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:43,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:36:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:43,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 06:36:43,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:43,683 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:43,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2023-11-29 06:36:43,766 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:43,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 26 [2023-11-29 06:36:43,776 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 225 proven. 30 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-11-29 06:36:43,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:36:43,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 06:36:43,940 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-29 06:36:43,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:43,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196350361] [2023-11-29 06:36:43,940 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:43,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752309540] [2023-11-29 06:36:43,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752309540] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:36:43,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:36:43,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-11-29 06:36:43,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799712073] [2023-11-29 06:36:43,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:36:43,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:36:43,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:43,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:36:43,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:36:43,943 INFO L87 Difference]: Start difference. First operand 153 states and 192 transitions. Second operand has 13 states, 11 states have (on average 8.0) internal successors, (88), 13 states have internal predecessors, (88), 6 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 4 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-29 06:36:44,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:44,240 INFO L93 Difference]: Finished difference Result 354 states and 442 transitions. [2023-11-29 06:36:44,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:36:44,241 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 8.0) internal successors, (88), 13 states have internal predecessors, (88), 6 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 4 states have call predecessors, (32), 6 states have call successors, (32) Word has length 120 [2023-11-29 06:36:44,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:44,243 INFO L225 Difference]: With dead ends: 354 [2023-11-29 06:36:44,243 INFO L226 Difference]: Without dead ends: 202 [2023-11-29 06:36:44,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:36:44,244 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 178 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:44,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 407 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:36:44,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-11-29 06:36:44,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 153. [2023-11-29 06:36:44,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 130 states have (on average 1.2230769230769232) internal successors, (159), 130 states have internal predecessors, (159), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:36:44,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 191 transitions. [2023-11-29 06:36:44,257 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 191 transitions. Word has length 120 [2023-11-29 06:36:44,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:44,258 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 191 transitions. [2023-11-29 06:36:44,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 8.0) internal successors, (88), 13 states have internal predecessors, (88), 6 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 4 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-29 06:36:44,258 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 191 transitions. [2023-11-29 06:36:44,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 06:36:44,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:44,260 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:44,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 06:36:44,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:44,460 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:44,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:44,461 INFO L85 PathProgramCache]: Analyzing trace with hash 787874196, now seen corresponding path program 1 times [2023-11-29 06:36:44,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:44,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917577222] [2023-11-29 06:36:44,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:44,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:44,484 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:44,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061672383] [2023-11-29 06:36:44,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:44,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:44,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:44,485 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:44,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 06:36:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:44,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 06:36:44,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:44,766 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:44,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 26 [2023-11-29 06:36:44,785 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:36:44,785 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:44,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:44,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917577222] [2023-11-29 06:36:44,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:44,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061672383] [2023-11-29 06:36:44,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061672383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:44,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:44,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:36:44,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259060269] [2023-11-29 06:36:44,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:44,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:36:44,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:44,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:36:44,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:36:44,787 INFO L87 Difference]: Start difference. First operand 153 states and 191 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:45,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:45,024 INFO L93 Difference]: Finished difference Result 395 states and 484 transitions. [2023-11-29 06:36:45,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:36:45,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 121 [2023-11-29 06:36:45,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:45,027 INFO L225 Difference]: With dead ends: 395 [2023-11-29 06:36:45,027 INFO L226 Difference]: Without dead ends: 243 [2023-11-29 06:36:45,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:36:45,028 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 75 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:45,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 504 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:36:45,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-11-29 06:36:45,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2023-11-29 06:36:45,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 200 states have (on average 1.185) internal successors, (237), 201 states have internal predecessors, (237), 26 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-29 06:36:45,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 289 transitions. [2023-11-29 06:36:45,051 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 289 transitions. Word has length 121 [2023-11-29 06:36:45,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:45,051 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 289 transitions. [2023-11-29 06:36:45,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:45,052 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 289 transitions. [2023-11-29 06:36:45,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 06:36:45,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:45,054 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:45,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 06:36:45,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 06:36:45,254 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:45,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:45,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1962360430, now seen corresponding path program 1 times [2023-11-29 06:36:45,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:45,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341468795] [2023-11-29 06:36:45,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:45,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:45,276 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:45,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1971148124] [2023-11-29 06:36:45,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:45,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:45,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:45,277 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:45,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 06:36:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:45,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 06:36:45,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:45,540 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:45,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 28 [2023-11-29 06:36:45,557 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:36:45,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:45,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:45,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341468795] [2023-11-29 06:36:45,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:45,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971148124] [2023-11-29 06:36:45,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971148124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:45,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:45,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:36:45,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851417294] [2023-11-29 06:36:45,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:45,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:36:45,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:45,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:36:45,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:36:45,560 INFO L87 Difference]: Start difference. First operand 239 states and 289 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:45,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:45,747 INFO L93 Difference]: Finished difference Result 476 states and 572 transitions. [2023-11-29 06:36:45,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:36:45,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 122 [2023-11-29 06:36:45,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:45,750 INFO L225 Difference]: With dead ends: 476 [2023-11-29 06:36:45,750 INFO L226 Difference]: Without dead ends: 238 [2023-11-29 06:36:45,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:36:45,752 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 57 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:45,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 331 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:36:45,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-29 06:36:45,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 185. [2023-11-29 06:36:45,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 161 states have (on average 1.204968944099379) internal successors, (194), 161 states have internal predecessors, (194), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:36:45,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 226 transitions. [2023-11-29 06:36:45,771 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 226 transitions. Word has length 122 [2023-11-29 06:36:45,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:45,771 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 226 transitions. [2023-11-29 06:36:45,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:45,771 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 226 transitions. [2023-11-29 06:36:45,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 06:36:45,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:45,773 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:45,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 06:36:45,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 06:36:45,973 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:45,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:45,974 INFO L85 PathProgramCache]: Analyzing trace with hash 2065861567, now seen corresponding path program 1 times [2023-11-29 06:36:45,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:45,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772435401] [2023-11-29 06:36:45,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:45,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:45,994 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:45,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689941569] [2023-11-29 06:36:45,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:45,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:45,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:45,996 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:45,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 06:36:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:46,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 06:36:46,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:46,252 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:46,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 28 [2023-11-29 06:36:46,279 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:36:46,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:46,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:46,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772435401] [2023-11-29 06:36:46,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:46,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689941569] [2023-11-29 06:36:46,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689941569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:46,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:46,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:36:46,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128309060] [2023-11-29 06:36:46,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:46,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:36:46,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:46,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:36:46,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:36:46,282 INFO L87 Difference]: Start difference. First operand 185 states and 226 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:50,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:50,339 INFO L93 Difference]: Finished difference Result 426 states and 513 transitions. [2023-11-29 06:36:50,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:36:50,340 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 123 [2023-11-29 06:36:50,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:50,342 INFO L225 Difference]: With dead ends: 426 [2023-11-29 06:36:50,342 INFO L226 Difference]: Without dead ends: 242 [2023-11-29 06:36:50,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:36:50,343 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 80 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:50,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 495 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-29 06:36:50,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-11-29 06:36:50,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 185. [2023-11-29 06:36:50,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 161 states have (on average 1.1987577639751552) internal successors, (193), 161 states have internal predecessors, (193), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:36:50,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 225 transitions. [2023-11-29 06:36:50,368 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 225 transitions. Word has length 123 [2023-11-29 06:36:50,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:50,369 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 225 transitions. [2023-11-29 06:36:50,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:50,369 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 225 transitions. [2023-11-29 06:36:50,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 06:36:50,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:50,370 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:50,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 06:36:50,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 06:36:50,570 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:50,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:50,571 INFO L85 PathProgramCache]: Analyzing trace with hash 594886655, now seen corresponding path program 1 times [2023-11-29 06:36:50,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:50,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195144129] [2023-11-29 06:36:50,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:50,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:50,588 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:50,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248001971] [2023-11-29 06:36:50,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:50,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:50,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:50,590 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:50,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 06:36:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:50,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 06:36:50,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:50,887 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:50,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 28 [2023-11-29 06:36:50,910 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:36:50,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:50,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:50,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195144129] [2023-11-29 06:36:50,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:50,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248001971] [2023-11-29 06:36:50,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248001971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:50,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:50,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:36:50,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452496755] [2023-11-29 06:36:50,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:50,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:36:50,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:50,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:36:50,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:36:50,913 INFO L87 Difference]: Start difference. First operand 185 states and 225 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:52,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:52,824 INFO L93 Difference]: Finished difference Result 422 states and 506 transitions. [2023-11-29 06:36:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:36:52,825 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 123 [2023-11-29 06:36:52,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:52,827 INFO L225 Difference]: With dead ends: 422 [2023-11-29 06:36:52,827 INFO L226 Difference]: Without dead ends: 238 [2023-11-29 06:36:52,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:36:52,828 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 69 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:52,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 451 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 06:36:52,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-29 06:36:52,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 185. [2023-11-29 06:36:52,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 161 states have (on average 1.1925465838509317) internal successors, (192), 161 states have internal predecessors, (192), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:36:52,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 224 transitions. [2023-11-29 06:36:52,845 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 224 transitions. Word has length 123 [2023-11-29 06:36:52,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:52,846 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 224 transitions. [2023-11-29 06:36:52,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:52,846 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 224 transitions. [2023-11-29 06:36:52,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 06:36:52,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:52,847 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:52,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 06:36:53,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:53,048 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:53,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:53,048 INFO L85 PathProgramCache]: Analyzing trace with hash -633145617, now seen corresponding path program 1 times [2023-11-29 06:36:53,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:53,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718419881] [2023-11-29 06:36:53,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:53,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:53,067 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:53,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730549624] [2023-11-29 06:36:53,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:53,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:53,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:53,068 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:53,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 06:36:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:53,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:36:53,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:53,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:53,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2023-11-29 06:36:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:36:53,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:53,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:53,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718419881] [2023-11-29 06:36:53,267 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:53,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730549624] [2023-11-29 06:36:53,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730549624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:53,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:53,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:36:53,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527335950] [2023-11-29 06:36:53,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:53,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:36:53,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:53,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:36:53,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:36:53,269 INFO L87 Difference]: Start difference. First operand 185 states and 224 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:53,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:53,550 INFO L93 Difference]: Finished difference Result 510 states and 617 transitions. [2023-11-29 06:36:53,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:36:53,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-11-29 06:36:53,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:53,558 INFO L225 Difference]: With dead ends: 510 [2023-11-29 06:36:53,559 INFO L226 Difference]: Without dead ends: 326 [2023-11-29 06:36:53,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 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 06:36:53,560 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 109 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:53,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 403 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:36:53,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-29 06:36:53,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 187. [2023-11-29 06:36:53,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 163 states have (on average 1.196319018404908) internal successors, (195), 163 states have internal predecessors, (195), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:36:53,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 227 transitions. [2023-11-29 06:36:53,584 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 227 transitions. Word has length 124 [2023-11-29 06:36:53,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:53,585 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 227 transitions. [2023-11-29 06:36:53,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:53,585 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 227 transitions. [2023-11-29 06:36:53,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 06:36:53,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:53,586 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:53,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 06:36:53,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 06:36:53,795 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:53,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:53,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1856383345, now seen corresponding path program 1 times [2023-11-29 06:36:53,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:53,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210660164] [2023-11-29 06:36:53,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:53,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:53,815 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:53,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937992699] [2023-11-29 06:36:53,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:53,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:53,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:53,816 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:53,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 06:36:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:53,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 06:36:53,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:54,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 06:36:54,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 06:36:54,124 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:54,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2023-11-29 06:36:54,141 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 231 proven. 12 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2023-11-29 06:36:54,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:36:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 72 proven. 15 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2023-11-29 06:36:54,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:54,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210660164] [2023-11-29 06:36:54,434 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:54,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937992699] [2023-11-29 06:36:54,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937992699] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:36:54,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:36:54,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2023-11-29 06:36:54,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855608216] [2023-11-29 06:36:54,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:36:54,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 06:36:54,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:54,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 06:36:54,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2023-11-29 06:36:54,437 INFO L87 Difference]: Start difference. First operand 187 states and 227 transitions. Second operand has 21 states, 17 states have (on average 4.235294117647059) internal successors, (72), 21 states have internal predecessors, (72), 8 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (21), 4 states have call predecessors, (21), 8 states have call successors, (21) [2023-11-29 06:36:54,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:54,958 INFO L93 Difference]: Finished difference Result 390 states and 469 transitions. [2023-11-29 06:36:54,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 06:36:54,958 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 4.235294117647059) internal successors, (72), 21 states have internal predecessors, (72), 8 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (21), 4 states have call predecessors, (21), 8 states have call successors, (21) Word has length 124 [2023-11-29 06:36:54,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:54,960 INFO L225 Difference]: With dead ends: 390 [2023-11-29 06:36:54,960 INFO L226 Difference]: Without dead ends: 204 [2023-11-29 06:36:54,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 225 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2023-11-29 06:36:54,961 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 208 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:54,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 462 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 06:36:54,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-29 06:36:54,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 194. [2023-11-29 06:36:54,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 168 states have (on average 1.1845238095238095) internal successors, (199), 168 states have internal predecessors, (199), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:36:54,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 231 transitions. [2023-11-29 06:36:54,979 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 231 transitions. Word has length 124 [2023-11-29 06:36:54,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:54,979 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 231 transitions. [2023-11-29 06:36:54,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 4.235294117647059) internal successors, (72), 21 states have internal predecessors, (72), 8 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (21), 4 states have call predecessors, (21), 8 states have call successors, (21) [2023-11-29 06:36:54,979 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 231 transitions. [2023-11-29 06:36:54,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 06:36:54,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:54,980 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:54,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 06:36:55,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 06:36:55,183 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:55,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:55,183 INFO L85 PathProgramCache]: Analyzing trace with hash 214101926, now seen corresponding path program 1 times [2023-11-29 06:36:55,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:55,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780298392] [2023-11-29 06:36:55,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:55,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:55,205 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:55,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062127568] [2023-11-29 06:36:55,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:55,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:55,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:55,207 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:55,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 06:36:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:55,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:36:55,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:55,376 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:55,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2023-11-29 06:36:55,385 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:36:55,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:55,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:55,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780298392] [2023-11-29 06:36:55,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:55,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062127568] [2023-11-29 06:36:55,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062127568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:55,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:55,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:36:55,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596826745] [2023-11-29 06:36:55,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:55,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:36:55,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:55,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:36:55,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:36:55,387 INFO L87 Difference]: Start difference. First operand 194 states and 231 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:55,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:55,600 INFO L93 Difference]: Finished difference Result 524 states and 625 transitions. [2023-11-29 06:36:55,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:36:55,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-11-29 06:36:55,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:55,603 INFO L225 Difference]: With dead ends: 524 [2023-11-29 06:36:55,603 INFO L226 Difference]: Without dead ends: 331 [2023-11-29 06:36:55,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 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 06:36:55,603 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 101 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:55,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 403 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:36:55,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-11-29 06:36:55,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 195. [2023-11-29 06:36:55,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 169 states have (on average 1.183431952662722) internal successors, (200), 169 states have internal predecessors, (200), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:36:55,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 232 transitions. [2023-11-29 06:36:55,629 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 232 transitions. Word has length 124 [2023-11-29 06:36:55,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:55,629 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 232 transitions. [2023-11-29 06:36:55,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:55,630 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 232 transitions. [2023-11-29 06:36:55,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 06:36:55,631 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:55,631 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:55,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 06:36:55,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 06:36:55,831 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:55,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:55,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1591336408, now seen corresponding path program 1 times [2023-11-29 06:36:55,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:55,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692315172] [2023-11-29 06:36:55,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:55,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:55,854 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:55,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65207100] [2023-11-29 06:36:55,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:55,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:55,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:55,855 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:55,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 06:36:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:56,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 06:36:56,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:56,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 06:36:56,123 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:56,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 22 [2023-11-29 06:36:56,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:56,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2023-11-29 06:36:56,166 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:36:56,166 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:56,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:56,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692315172] [2023-11-29 06:36:56,167 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:56,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65207100] [2023-11-29 06:36:56,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65207100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:56,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:56,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:36:56,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752044355] [2023-11-29 06:36:56,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:56,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:36:56,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:56,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:36:56,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:36:56,168 INFO L87 Difference]: Start difference. First operand 195 states and 232 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:56,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:56,483 INFO L93 Difference]: Finished difference Result 580 states and 694 transitions. [2023-11-29 06:36:56,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:36:56,484 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-11-29 06:36:56,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:56,486 INFO L225 Difference]: With dead ends: 580 [2023-11-29 06:36:56,486 INFO L226 Difference]: Without dead ends: 386 [2023-11-29 06:36:56,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:36:56,488 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 195 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:56,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 375 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:36:56,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-11-29 06:36:56,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 228. [2023-11-29 06:36:56,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 202 states have (on average 1.183168316831683) internal successors, (239), 202 states have internal predecessors, (239), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:36:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 271 transitions. [2023-11-29 06:36:56,514 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 271 transitions. Word has length 124 [2023-11-29 06:36:56,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:56,514 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 271 transitions. [2023-11-29 06:36:56,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 271 transitions. [2023-11-29 06:36:56,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 06:36:56,516 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:56,516 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:56,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 06:36:56,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 06:36:56,717 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:56,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:56,717 INFO L85 PathProgramCache]: Analyzing trace with hash -890271830, now seen corresponding path program 1 times [2023-11-29 06:36:56,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:56,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978490065] [2023-11-29 06:36:56,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:56,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:56,739 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:56,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558537970] [2023-11-29 06:36:56,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:56,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:56,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:56,741 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:56,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 06:36:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:56,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:36:56,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:56,960 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:56,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2023-11-29 06:36:56,969 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:36:56,969 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:56,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:56,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978490065] [2023-11-29 06:36:56,970 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:56,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558537970] [2023-11-29 06:36:56,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558537970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:56,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:56,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:36:56,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909106271] [2023-11-29 06:36:56,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:56,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:36:56,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:56,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:36:56,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:36:56,971 INFO L87 Difference]: Start difference. First operand 228 states and 271 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:57,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:57,196 INFO L93 Difference]: Finished difference Result 619 states and 731 transitions. [2023-11-29 06:36:57,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:36:57,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-11-29 06:36:57,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:57,199 INFO L225 Difference]: With dead ends: 619 [2023-11-29 06:36:57,199 INFO L226 Difference]: Without dead ends: 392 [2023-11-29 06:36:57,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 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 06:36:57,201 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 178 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:57,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 396 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:36:57,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2023-11-29 06:36:57,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 234. [2023-11-29 06:36:57,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 208 states have (on average 1.1923076923076923) internal successors, (248), 208 states have internal predecessors, (248), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:36:57,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 280 transitions. [2023-11-29 06:36:57,228 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 280 transitions. Word has length 124 [2023-11-29 06:36:57,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:57,228 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 280 transitions. [2023-11-29 06:36:57,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:57,229 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 280 transitions. [2023-11-29 06:36:57,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 06:36:57,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:57,230 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:57,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 06:36:57,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 06:36:57,431 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:57,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:57,431 INFO L85 PathProgramCache]: Analyzing trace with hash -210213460, now seen corresponding path program 1 times [2023-11-29 06:36:57,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:57,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573647624] [2023-11-29 06:36:57,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:57,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:57,451 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:57,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1729116701] [2023-11-29 06:36:57,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:57,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:57,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:57,452 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:57,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 06:36:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:57,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 06:36:57,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:57,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:57,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-11-29 06:36:57,901 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:57,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 21 [2023-11-29 06:36:57,972 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:36:57,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:57,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:57,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573647624] [2023-11-29 06:36:57,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:57,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729116701] [2023-11-29 06:36:57,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729116701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:57,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:57,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-29 06:36:57,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128672191] [2023-11-29 06:36:57,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:57,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:36:57,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:57,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:36:57,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:36:57,973 INFO L87 Difference]: Start difference. First operand 234 states and 280 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:59,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:59,177 INFO L93 Difference]: Finished difference Result 695 states and 826 transitions. [2023-11-29 06:36:59,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 06:36:59,178 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-11-29 06:36:59,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:59,180 INFO L225 Difference]: With dead ends: 695 [2023-11-29 06:36:59,180 INFO L226 Difference]: Without dead ends: 462 [2023-11-29 06:36:59,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=253, Invalid=869, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 06:36:59,181 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 376 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:59,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 1333 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 06:36:59,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-11-29 06:36:59,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 285. [2023-11-29 06:36:59,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 259 states have (on average 1.223938223938224) internal successors, (317), 259 states have internal predecessors, (317), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:36:59,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 349 transitions. [2023-11-29 06:36:59,205 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 349 transitions. Word has length 124 [2023-11-29 06:36:59,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:59,205 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 349 transitions. [2023-11-29 06:36:59,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:59,205 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 349 transitions. [2023-11-29 06:36:59,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 06:36:59,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:59,207 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:59,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 06:36:59,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:59,407 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:59,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:59,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1460146867, now seen corresponding path program 1 times [2023-11-29 06:36:59,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:59,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807291930] [2023-11-29 06:36:59,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:59,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:59,425 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:59,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1528565368] [2023-11-29 06:36:59,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:59,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:59,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:59,426 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:59,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 06:36:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:59,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:36:59,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:59,615 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:59,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2023-11-29 06:36:59,622 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:36:59,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:59,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:59,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807291930] [2023-11-29 06:36:59,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:59,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528565368] [2023-11-29 06:36:59,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528565368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:59,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:59,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:36:59,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090848750] [2023-11-29 06:36:59,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:59,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:36:59,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:59,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:36:59,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:36:59,624 INFO L87 Difference]: Start difference. First operand 285 states and 349 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:59,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:59,804 INFO L93 Difference]: Finished difference Result 751 states and 899 transitions. [2023-11-29 06:36:59,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:36:59,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-11-29 06:36:59,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:59,808 INFO L225 Difference]: With dead ends: 751 [2023-11-29 06:36:59,808 INFO L226 Difference]: Without dead ends: 467 [2023-11-29 06:36:59,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 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 06:36:59,809 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 145 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:59,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 410 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:36:59,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-11-29 06:36:59,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 288. [2023-11-29 06:36:59,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 262 states have (on average 1.2213740458015268) internal successors, (320), 262 states have internal predecessors, (320), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:36:59,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 352 transitions. [2023-11-29 06:36:59,841 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 352 transitions. Word has length 124 [2023-11-29 06:36:59,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:59,842 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 352 transitions. [2023-11-29 06:36:59,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:36:59,842 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 352 transitions. [2023-11-29 06:36:59,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 06:36:59,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:59,843 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:59,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 06:37:00,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:00,044 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:00,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:00,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2140205237, now seen corresponding path program 1 times [2023-11-29 06:37:00,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:00,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692630494] [2023-11-29 06:37:00,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:00,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:00,067 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:37:00,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119988915] [2023-11-29 06:37:00,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:00,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:00,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:37:00,069 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:37:00,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 06:37:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:00,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 06:37:00,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:37:00,374 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:37:00,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 22 [2023-11-29 06:37:00,462 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:37:00,463 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:37:00,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:00,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692630494] [2023-11-29 06:37:00,463 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:37:00,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119988915] [2023-11-29 06:37:00,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119988915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:00,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:00,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:37:00,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915183267] [2023-11-29 06:37:00,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:00,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:37:00,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:00,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:37:00,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:37:00,465 INFO L87 Difference]: Start difference. First operand 288 states and 352 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:37:00,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:00,711 INFO L93 Difference]: Finished difference Result 685 states and 822 transitions. [2023-11-29 06:37:00,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:37:00,711 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-11-29 06:37:00,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:00,714 INFO L225 Difference]: With dead ends: 685 [2023-11-29 06:37:00,714 INFO L226 Difference]: Without dead ends: 398 [2023-11-29 06:37:00,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:37:00,715 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 176 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:00,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 300 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:37:00,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2023-11-29 06:37:00,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 291. [2023-11-29 06:37:00,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 265 states have (on average 1.2188679245283018) internal successors, (323), 265 states have internal predecessors, (323), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:37:00,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 355 transitions. [2023-11-29 06:37:00,759 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 355 transitions. Word has length 124 [2023-11-29 06:37:00,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:00,759 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 355 transitions. [2023-11-29 06:37:00,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:37:00,760 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 355 transitions. [2023-11-29 06:37:00,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 06:37:00,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:00,761 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:00,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 06:37:00,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:00,962 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:00,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:00,962 INFO L85 PathProgramCache]: Analyzing trace with hash -773694227, now seen corresponding path program 1 times [2023-11-29 06:37:00,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:00,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036169221] [2023-11-29 06:37:00,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:00,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:00,984 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:37:00,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2134502284] [2023-11-29 06:37:00,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:00,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:00,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:37:00,985 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:37:00,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 06:37:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:01,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 06:37:01,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:37:01,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 06:37:01,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:37:01,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2023-11-29 06:37:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 149 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-29 06:37:01,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:37:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2023-11-29 06:37:01,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:01,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036169221] [2023-11-29 06:37:01,706 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:37:01,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134502284] [2023-11-29 06:37:01,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134502284] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:37:01,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:37:01,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-11-29 06:37:01,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762378793] [2023-11-29 06:37:01,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:37:01,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 06:37:01,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:01,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 06:37:01,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2023-11-29 06:37:01,708 INFO L87 Difference]: Start difference. First operand 291 states and 355 transitions. Second operand has 23 states, 19 states have (on average 4.526315789473684) internal successors, (86), 21 states have internal predecessors, (86), 8 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 6 states have call predecessors, (32), 8 states have call successors, (32) [2023-11-29 06:37:02,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:02,241 INFO L93 Difference]: Finished difference Result 589 states and 715 transitions. [2023-11-29 06:37:02,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 06:37:02,242 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 4.526315789473684) internal successors, (86), 21 states have internal predecessors, (86), 8 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 6 states have call predecessors, (32), 8 states have call successors, (32) Word has length 124 [2023-11-29 06:37:02,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:02,244 INFO L225 Difference]: With dead ends: 589 [2023-11-29 06:37:02,244 INFO L226 Difference]: Without dead ends: 299 [2023-11-29 06:37:02,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2023-11-29 06:37:02,246 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 306 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:02,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 404 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 06:37:02,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-29 06:37:02,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 293. [2023-11-29 06:37:02,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 266 states have (on average 1.2105263157894737) internal successors, (322), 266 states have internal predecessors, (322), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:37:02,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 354 transitions. [2023-11-29 06:37:02,285 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 354 transitions. Word has length 124 [2023-11-29 06:37:02,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:02,285 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 354 transitions. [2023-11-29 06:37:02,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 4.526315789473684) internal successors, (86), 21 states have internal predecessors, (86), 8 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 6 states have call predecessors, (32), 8 states have call successors, (32) [2023-11-29 06:37:02,285 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 354 transitions. [2023-11-29 06:37:02,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 06:37:02,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:02,287 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:02,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 06:37:02,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:02,487 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:02,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:02,488 INFO L85 PathProgramCache]: Analyzing trace with hash 73553316, now seen corresponding path program 1 times [2023-11-29 06:37:02,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:02,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87371150] [2023-11-29 06:37:02,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:02,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:02,510 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:37:02,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1159212138] [2023-11-29 06:37:02,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:02,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:02,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:37:02,511 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:37:02,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 06:37:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:02,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 77 conjunts are in the unsatisfiable core [2023-11-29 06:37:02,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:37:02,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 06:37:02,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 06:37:03,237 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:37:03,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 43 [2023-11-29 06:37:03,631 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:37:03,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 45 [2023-11-29 06:37:03,750 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-29 06:37:03,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:37:03,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:03,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87371150] [2023-11-29 06:37:03,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:37:03,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159212138] [2023-11-29 06:37:03,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159212138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:03,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:03,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2023-11-29 06:37:03,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616163166] [2023-11-29 06:37:03,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:03,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 06:37:03,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:03,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 06:37:03,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2023-11-29 06:37:03,753 INFO L87 Difference]: Start difference. First operand 293 states and 354 transitions. Second operand has 29 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-29 06:37:06,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:06,338 INFO L93 Difference]: Finished difference Result 830 states and 978 transitions. [2023-11-29 06:37:06,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-29 06:37:06,339 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 124 [2023-11-29 06:37:06,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:06,341 INFO L225 Difference]: With dead ends: 830 [2023-11-29 06:37:06,341 INFO L226 Difference]: Without dead ends: 538 [2023-11-29 06:37:06,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=579, Invalid=3203, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 06:37:06,343 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 660 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 2267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:06,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 1772 Invalid, 2267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 06:37:06,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2023-11-29 06:37:06,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 293. [2023-11-29 06:37:06,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 266 states have (on average 1.2105263157894737) internal successors, (322), 266 states have internal predecessors, (322), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:37:06,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 354 transitions. [2023-11-29 06:37:06,388 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 354 transitions. Word has length 124 [2023-11-29 06:37:06,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:06,388 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 354 transitions. [2023-11-29 06:37:06,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-29 06:37:06,388 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 354 transitions. [2023-11-29 06:37:06,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 06:37:06,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:06,389 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:06,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 06:37:06,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:06,590 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:06,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:06,590 INFO L85 PathProgramCache]: Analyzing trace with hash 753611686, now seen corresponding path program 1 times [2023-11-29 06:37:06,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:06,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207592674] [2023-11-29 06:37:06,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:06,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:06,610 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:37:06,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [981983953] [2023-11-29 06:37:06,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:06,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:06,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:37:06,612 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:37:06,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 06:37:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:06,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:37:06,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:37:06,800 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:37:06,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2023-11-29 06:37:06,808 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:37:06,808 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:37:06,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:06,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207592674] [2023-11-29 06:37:06,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:37:06,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981983953] [2023-11-29 06:37:06,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981983953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:06,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:06,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:37:06,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292966264] [2023-11-29 06:37:06,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:06,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:37:06,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:06,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:37:06,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:37:06,810 INFO L87 Difference]: Start difference. First operand 293 states and 354 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:37:07,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:07,001 INFO L93 Difference]: Finished difference Result 734 states and 869 transitions. [2023-11-29 06:37:07,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:37:07,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-11-29 06:37:07,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:07,004 INFO L225 Difference]: With dead ends: 734 [2023-11-29 06:37:07,004 INFO L226 Difference]: Without dead ends: 442 [2023-11-29 06:37:07,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:37:07,005 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 124 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:07,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 497 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:37:07,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-11-29 06:37:07,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 293. [2023-11-29 06:37:07,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 266 states have (on average 1.1879699248120301) internal successors, (316), 266 states have internal predecessors, (316), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:37:07,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 348 transitions. [2023-11-29 06:37:07,030 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 348 transitions. Word has length 124 [2023-11-29 06:37:07,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:07,030 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 348 transitions. [2023-11-29 06:37:07,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:37:07,031 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 348 transitions. [2023-11-29 06:37:07,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 06:37:07,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:07,032 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:07,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-29 06:37:07,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 06:37:07,232 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:07,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:07,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1870995283, now seen corresponding path program 1 times [2023-11-29 06:37:07,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:07,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875082888] [2023-11-29 06:37:07,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:07,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:07,254 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:37:07,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486615222] [2023-11-29 06:37:07,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:07,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:07,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:37:07,256 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:37:07,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 06:37:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:07,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 06:37:07,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:37:07,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 06:37:07,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:37:07,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2023-11-29 06:37:07,810 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 149 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-29 06:37:07,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:37:08,080 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2023-11-29 06:37:08,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:08,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875082888] [2023-11-29 06:37:08,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:37:08,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486615222] [2023-11-29 06:37:08,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486615222] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:37:08,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:37:08,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-11-29 06:37:08,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781339959] [2023-11-29 06:37:08,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:37:08,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 06:37:08,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:08,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 06:37:08,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2023-11-29 06:37:08,083 INFO L87 Difference]: Start difference. First operand 293 states and 348 transitions. Second operand has 23 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 21 states have internal predecessors, (100), 8 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 6 states have call predecessors, (32), 8 states have call successors, (32) [2023-11-29 06:37:08,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:08,594 INFO L93 Difference]: Finished difference Result 684 states and 800 transitions. [2023-11-29 06:37:08,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 06:37:08,595 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 21 states have internal predecessors, (100), 8 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 6 states have call predecessors, (32), 8 states have call successors, (32) Word has length 124 [2023-11-29 06:37:08,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:08,596 INFO L225 Difference]: With dead ends: 684 [2023-11-29 06:37:08,596 INFO L226 Difference]: Without dead ends: 392 [2023-11-29 06:37:08,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=241, Invalid=689, Unknown=0, NotChecked=0, Total=930 [2023-11-29 06:37:08,597 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 153 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:08,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 631 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 06:37:08,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2023-11-29 06:37:08,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 290. [2023-11-29 06:37:08,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 263 states have (on average 1.155893536121673) internal successors, (304), 263 states have internal predecessors, (304), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:37:08,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 336 transitions. [2023-11-29 06:37:08,620 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 336 transitions. Word has length 124 [2023-11-29 06:37:08,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:08,621 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 336 transitions. [2023-11-29 06:37:08,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 21 states have internal predecessors, (100), 8 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 6 states have call predecessors, (32), 8 states have call successors, (32) [2023-11-29 06:37:08,621 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 336 transitions. [2023-11-29 06:37:08,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 06:37:08,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:08,622 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:08,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 06:37:08,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 06:37:08,823 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:08,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:08,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1454676264, now seen corresponding path program 1 times [2023-11-29 06:37:08,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:08,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523897414] [2023-11-29 06:37:08,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:08,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:08,844 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:37:08,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174109941] [2023-11-29 06:37:08,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:08,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:08,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:37:08,846 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:37:08,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 06:37:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:09,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 06:37:09,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:37:09,160 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:37:09,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-11-29 06:37:09,200 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:37:09,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2023-11-29 06:37:09,208 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:37:09,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:37:09,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:09,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523897414] [2023-11-29 06:37:09,209 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:37:09,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174109941] [2023-11-29 06:37:09,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174109941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:09,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:09,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:37:09,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871659412] [2023-11-29 06:37:09,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:09,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:37:09,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:09,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:37:09,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:37:09,211 INFO L87 Difference]: Start difference. First operand 290 states and 336 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:37:09,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:09,518 INFO L93 Difference]: Finished difference Result 704 states and 803 transitions. [2023-11-29 06:37:09,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:37:09,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-11-29 06:37:09,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:09,521 INFO L225 Difference]: With dead ends: 704 [2023-11-29 06:37:09,521 INFO L226 Difference]: Without dead ends: 415 [2023-11-29 06:37:09,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:37:09,522 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 164 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:09,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 458 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:37:09,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-11-29 06:37:09,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 284. [2023-11-29 06:37:09,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 257 states have (on average 1.1361867704280155) internal successors, (292), 257 states have internal predecessors, (292), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:37:09,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 324 transitions. [2023-11-29 06:37:09,547 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 324 transitions. Word has length 124 [2023-11-29 06:37:09,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:09,547 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 324 transitions. [2023-11-29 06:37:09,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:37:09,547 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 324 transitions. [2023-11-29 06:37:09,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 06:37:09,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:09,548 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:09,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 06:37:09,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 06:37:09,749 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:09,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:09,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1731885018, now seen corresponding path program 1 times [2023-11-29 06:37:09,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:09,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030444239] [2023-11-29 06:37:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:09,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:09,771 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:37:09,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639625888] [2023-11-29 06:37:09,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:09,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:09,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:37:09,772 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:37:09,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 06:37:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:09,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:37:09,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:37:09,975 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:37:09,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2023-11-29 06:37:09,984 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:37:09,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:37:09,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:09,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030444239] [2023-11-29 06:37:09,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:37:09,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639625888] [2023-11-29 06:37:09,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639625888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:09,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:09,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:37:09,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456203896] [2023-11-29 06:37:09,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:09,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:37:09,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:09,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:37:09,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:37:09,986 INFO L87 Difference]: Start difference. First operand 284 states and 324 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:37:10,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:10,172 INFO L93 Difference]: Finished difference Result 584 states and 654 transitions. [2023-11-29 06:37:10,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:37:10,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-11-29 06:37:10,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:10,175 INFO L225 Difference]: With dead ends: 584 [2023-11-29 06:37:10,175 INFO L226 Difference]: Without dead ends: 301 [2023-11-29 06:37:10,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:37:10,176 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 86 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:10,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 510 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:37:10,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-11-29 06:37:10,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 221. [2023-11-29 06:37:10,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 194 states have (on average 1.097938144329897) internal successors, (213), 194 states have internal predecessors, (213), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:37:10,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 245 transitions. [2023-11-29 06:37:10,210 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 245 transitions. Word has length 124 [2023-11-29 06:37:10,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:10,210 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 245 transitions. [2023-11-29 06:37:10,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:37:10,211 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 245 transitions. [2023-11-29 06:37:10,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-29 06:37:10,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:10,212 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:10,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-29 06:37:10,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 06:37:10,413 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:10,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:10,413 INFO L85 PathProgramCache]: Analyzing trace with hash 645320458, now seen corresponding path program 1 times [2023-11-29 06:37:10,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:10,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554706124] [2023-11-29 06:37:10,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:10,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:10,442 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:37:10,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898250367] [2023-11-29 06:37:10,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:10,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:10,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:37:10,443 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:37:10,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 06:37:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:10,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 06:37:10,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:37:10,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2023-11-29 06:37:10,897 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:37:10,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 41 [2023-11-29 06:37:11,001 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:37:11,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:37:11,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:11,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554706124] [2023-11-29 06:37:11,001 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:37:11,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898250367] [2023-11-29 06:37:11,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898250367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:11,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:11,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 06:37:11,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918366025] [2023-11-29 06:37:11,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:11,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:37:11,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:11,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:37:11,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:37:11,003 INFO L87 Difference]: Start difference. First operand 221 states and 245 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:37:11,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:11,630 INFO L93 Difference]: Finished difference Result 282 states and 309 transitions. [2023-11-29 06:37:11,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:37:11,630 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2023-11-29 06:37:11,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:11,631 INFO L225 Difference]: With dead ends: 282 [2023-11-29 06:37:11,631 INFO L226 Difference]: Without dead ends: 280 [2023-11-29 06:37:11,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2023-11-29 06:37:11,632 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 85 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:11,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1235 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 06:37:11,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-29 06:37:11,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 265. [2023-11-29 06:37:11,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 238 states have (on average 1.0924369747899159) internal successors, (260), 238 states have internal predecessors, (260), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:37:11,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 292 transitions. [2023-11-29 06:37:11,663 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 292 transitions. Word has length 127 [2023-11-29 06:37:11,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:11,663 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 292 transitions. [2023-11-29 06:37:11,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:37:11,663 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 292 transitions. [2023-11-29 06:37:11,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-29 06:37:11,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:11,664 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:11,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 06:37:11,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 06:37:11,865 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:11,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:11,865 INFO L85 PathProgramCache]: Analyzing trace with hash -164026168, now seen corresponding path program 1 times [2023-11-29 06:37:11,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:11,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850437967] [2023-11-29 06:37:11,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:11,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:11,882 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:37:11,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379136855] [2023-11-29 06:37:11,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:11,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:11,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:37:11,883 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:37:11,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 06:37:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:12,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:37:12,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:37:12,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-11-29 06:37:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:37:12,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:37:12,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:12,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850437967] [2023-11-29 06:37:12,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:37:12,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379136855] [2023-11-29 06:37:12,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379136855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:12,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:12,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:37:12,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978539446] [2023-11-29 06:37:12,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:12,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:37:12,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:12,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:37:12,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:37:12,260 INFO L87 Difference]: Start difference. First operand 265 states and 292 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:37:12,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:12,481 INFO L93 Difference]: Finished difference Result 547 states and 601 transitions. [2023-11-29 06:37:12,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:37:12,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2023-11-29 06:37:12,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:12,483 INFO L225 Difference]: With dead ends: 547 [2023-11-29 06:37:12,483 INFO L226 Difference]: Without dead ends: 283 [2023-11-29 06:37:12,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:37:12,484 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 76 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:12,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 337 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:37:12,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-29 06:37:12,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 265. [2023-11-29 06:37:12,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 238 states have (on average 1.088235294117647) internal successors, (259), 238 states have internal predecessors, (259), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:37:12,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 291 transitions. [2023-11-29 06:37:12,517 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 291 transitions. Word has length 127 [2023-11-29 06:37:12,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:12,517 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 291 transitions. [2023-11-29 06:37:12,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:37:12,518 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 291 transitions. [2023-11-29 06:37:12,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-29 06:37:12,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:12,519 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:12,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-29 06:37:12,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 06:37:12,719 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:12,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:12,720 INFO L85 PathProgramCache]: Analyzing trace with hash 511306952, now seen corresponding path program 1 times [2023-11-29 06:37:12,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:12,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534149486] [2023-11-29 06:37:12,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:12,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:12,735 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:37:12,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115949446] [2023-11-29 06:37:12,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:12,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:12,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:37:12,737 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:37:12,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 06:37:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:12,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:37:12,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:37:13,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 06:37:13,132 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:37:13,132 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:37:13,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:13,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534149486] [2023-11-29 06:37:13,132 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:37:13,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115949446] [2023-11-29 06:37:13,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115949446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:13,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:13,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:37:13,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772322571] [2023-11-29 06:37:13,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:13,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:37:13,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:13,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:37:13,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:37:13,134 INFO L87 Difference]: Start difference. First operand 265 states and 291 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:37:13,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:13,348 INFO L93 Difference]: Finished difference Result 543 states and 595 transitions. [2023-11-29 06:37:13,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:37:13,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2023-11-29 06:37:13,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:13,350 INFO L225 Difference]: With dead ends: 543 [2023-11-29 06:37:13,350 INFO L226 Difference]: Without dead ends: 279 [2023-11-29 06:37:13,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:37:13,351 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 81 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:13,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 350 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:37:13,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-11-29 06:37:13,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 265. [2023-11-29 06:37:13,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 238 states have (on average 1.084033613445378) internal successors, (258), 238 states have internal predecessors, (258), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:37:13,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 290 transitions. [2023-11-29 06:37:13,372 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 290 transitions. Word has length 127 [2023-11-29 06:37:13,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:13,372 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 290 transitions. [2023-11-29 06:37:13,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:37:13,373 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 290 transitions. [2023-11-29 06:37:13,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-29 06:37:13,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:13,373 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:13,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 06:37:13,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:13,574 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:13,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:13,574 INFO L85 PathProgramCache]: Analyzing trace with hash -298039674, now seen corresponding path program 1 times [2023-11-29 06:37:13,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:13,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312981463] [2023-11-29 06:37:13,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:13,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:13,590 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:37:13,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1952849989] [2023-11-29 06:37:13,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:13,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:37:13,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:37:13,591 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:37:13,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 06:37:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:13,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 06:37:13,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:37:13,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:37:13,844 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 06:37:13,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:37:13,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:13,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312981463] [2023-11-29 06:37:13,845 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:37:13,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952849989] [2023-11-29 06:37:13,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952849989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:13,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:13,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 06:37:13,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625689636] [2023-11-29 06:37:13,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:13,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:37:13,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:13,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:37:13,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:37:13,847 INFO L87 Difference]: Start difference. First operand 265 states and 290 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:37:14,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:14,384 INFO L93 Difference]: Finished difference Result 376 states and 418 transitions. [2023-11-29 06:37:14,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:37:14,384 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2023-11-29 06:37:14,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:14,384 INFO L225 Difference]: With dead ends: 376 [2023-11-29 06:37:14,384 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 06:37:14,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2023-11-29 06:37:14,386 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 105 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:14,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1797 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 06:37:14,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 06:37:14,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 06:37:14,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:37:14,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 06:37:14,387 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 127 [2023-11-29 06:37:14,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:14,387 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 06:37:14,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:37:14,387 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 06:37:14,388 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 06:37:14,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 06:37:14,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 06:37:14,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62641a4-957e-4476-b1e9-73a4770c2ed1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 06:37:14,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 06:39:58,861 WARN L293 SmtUtils]: Spent 2.74m on a formula simplification. DAG size of input: 131 DAG size of output: 117 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-11-29 06:42:39,622 WARN L293 SmtUtils]: Spent 2.68m on a formula simplification. DAG size of input: 129 DAG size of output: 115 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-11-29 06:50:48,739 WARN L293 SmtUtils]: Spent 8.15m on a formula simplification. DAG size of input: 141 DAG size of output: 109 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)