./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-92.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-92.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu --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 117c6decd6762b62195368e5a395459a67c828d30a0a9abafd54336b31d07e67 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:48:12,910 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:48:12,995 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:48:12,999 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:48:13,000 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:48:13,027 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:48:13,027 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:48:13,028 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:48:13,029 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:48:13,029 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:48:13,030 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:48:13,031 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:48:13,031 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:48:13,032 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:48:13,033 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:48:13,033 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:48:13,034 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:48:13,034 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:48:13,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:48:13,036 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:48:13,036 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:48:13,037 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:48:13,037 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:48:13,038 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:48:13,039 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:48:13,043 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:48:13,044 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:48:13,044 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:48:13,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:13,045 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:48:13,046 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:48:13,046 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:48:13,046 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:48:13,046 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:48:13,047 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:48:13,047 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:48:13,047 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:48:13,047 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:48:13,047 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:48:13,047 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_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 117c6decd6762b62195368e5a395459a67c828d30a0a9abafd54336b31d07e67 [2023-11-19 07:48:13,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:48:13,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:48:13,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:48:13,408 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:48:13,409 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:48:13,410 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-92.i [2023-11-19 07:48:16,624 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:48:16,868 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:48:16,868 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-92.i [2023-11-19 07:48:16,892 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/data/c79dd3b9e/939135f42a354c4d9353eecb739ad776/FLAGd7cbc103c [2023-11-19 07:48:16,910 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/data/c79dd3b9e/939135f42a354c4d9353eecb739ad776 [2023-11-19 07:48:16,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:48:16,915 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:48:16,916 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:16,916 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:48:16,924 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:48:16,928 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:16" (1/1) ... [2023-11-19 07:48:16,929 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f65c485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:16, skipping insertion in model container [2023-11-19 07:48:16,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:16" (1/1) ... [2023-11-19 07:48:16,984 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:48:17,176 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_4e53ad07-8a7e-4373-958c-8d6e8683c90e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-92.i[919,932] [2023-11-19 07:48:17,257 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:17,270 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:48:17,283 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_4e53ad07-8a7e-4373-958c-8d6e8683c90e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-92.i[919,932] [2023-11-19 07:48:17,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:17,345 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:48:17,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:17 WrapperNode [2023-11-19 07:48:17,346 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:17,347 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:17,347 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:48:17,347 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:48:17,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:17" (1/1) ... [2023-11-19 07:48:17,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:17" (1/1) ... [2023-11-19 07:48:17,423 INFO L138 Inliner]: procedures = 26, calls = 48, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 257 [2023-11-19 07:48:17,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:17,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:48:17,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:48:17,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:48:17,434 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:17" (1/1) ... [2023-11-19 07:48:17,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:17" (1/1) ... [2023-11-19 07:48:17,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:17" (1/1) ... [2023-11-19 07:48:17,439 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:17" (1/1) ... [2023-11-19 07:48:17,467 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:17" (1/1) ... [2023-11-19 07:48:17,471 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:17" (1/1) ... [2023-11-19 07:48:17,490 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:17" (1/1) ... [2023-11-19 07:48:17,493 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:17" (1/1) ... [2023-11-19 07:48:17,506 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:48:17,507 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:48:17,508 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:48:17,508 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:48:17,511 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:17" (1/1) ... [2023-11-19 07:48:17,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:17,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:17,562 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:17,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:48:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:48:17,615 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:48:17,615 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:48:17,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:48:17,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:48:17,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:48:17,794 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:48:17,796 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:48:18,424 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:48:18,435 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:48:18,435 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:48:18,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:18 BoogieIcfgContainer [2023-11-19 07:48:18,440 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:48:18,443 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:48:18,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:48:18,447 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:48:18,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:48:16" (1/3) ... [2023-11-19 07:48:18,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e591da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:18, skipping insertion in model container [2023-11-19 07:48:18,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:17" (2/3) ... [2023-11-19 07:48:18,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e591da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:18, skipping insertion in model container [2023-11-19 07:48:18,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:18" (3/3) ... [2023-11-19 07:48:18,451 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-92.i [2023-11-19 07:48:18,473 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:48:18,474 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:48:18,532 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:48:18,539 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;@19ebdad2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:48:18,539 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:48:18,544 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 68 states have (on average 1.4705882352941178) internal successors, (100), 69 states have internal predecessors, (100), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-19 07:48:18,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-19 07:48:18,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:18,565 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:18,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:18,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:18,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1770407819, now seen corresponding path program 1 times [2023-11-19 07:48:18,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:18,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115763715] [2023-11-19 07:48:18,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:18,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:18,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:18,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115763715] [2023-11-19 07:48:18,843 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:48:18,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606445529] [2023-11-19 07:48:18,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:18,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:18,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:18,847 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:18,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:48:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:19,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:48:19,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:19,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2023-11-19 07:48:19,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:19,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606445529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:19,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:19,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:48:19,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677205402] [2023-11-19 07:48:19,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:19,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:48:19,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:19,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:48:19,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:48:19,313 INFO L87 Difference]: Start difference. First operand has 106 states, 68 states have (on average 1.4705882352941178) internal successors, (100), 69 states have internal predecessors, (100), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) [2023-11-19 07:48:19,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:19,362 INFO L93 Difference]: Finished difference Result 205 states and 369 transitions. [2023-11-19 07:48:19,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:48:19,364 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) Word has length 223 [2023-11-19 07:48:19,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:19,372 INFO L225 Difference]: With dead ends: 205 [2023-11-19 07:48:19,372 INFO L226 Difference]: Without dead ends: 102 [2023-11-19 07:48:19,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:48:19,380 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:19,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:48:19,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-19 07:48:19,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-11-19 07:48:19,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 65 states have internal predecessors, (93), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-19 07:48:19,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 163 transitions. [2023-11-19 07:48:19,447 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 163 transitions. Word has length 223 [2023-11-19 07:48:19,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:19,448 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 163 transitions. [2023-11-19 07:48:19,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) [2023-11-19 07:48:19,449 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 163 transitions. [2023-11-19 07:48:19,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-19 07:48:19,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:19,456 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:19,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:19,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:19,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:19,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:19,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1083384507, now seen corresponding path program 1 times [2023-11-19 07:48:19,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:19,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460988791] [2023-11-19 07:48:19,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:19,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:19,802 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:19,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1224306629] [2023-11-19 07:48:19,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:19,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:19,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:19,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:19,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:48:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:20,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:48:20,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:20,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-19 07:48:20,069 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:20,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:20,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460988791] [2023-11-19 07:48:20,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:20,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224306629] [2023-11-19 07:48:20,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224306629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:20,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:20,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:20,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357367635] [2023-11-19 07:48:20,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:20,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:20,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:20,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:20,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:20,081 INFO L87 Difference]: Start difference. First operand 102 states and 163 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-19 07:48:20,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:20,152 INFO L93 Difference]: Finished difference Result 202 states and 325 transitions. [2023-11-19 07:48:20,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:20,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 223 [2023-11-19 07:48:20,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:20,161 INFO L225 Difference]: With dead ends: 202 [2023-11-19 07:48:20,163 INFO L226 Difference]: Without dead ends: 103 [2023-11-19 07:48:20,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:20,169 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 0 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:20,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 313 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:48:20,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-19 07:48:20,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-19 07:48:20,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 66 states have (on average 1.4242424242424243) internal successors, (94), 66 states have internal predecessors, (94), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-19 07:48:20,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 164 transitions. [2023-11-19 07:48:20,198 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 164 transitions. Word has length 223 [2023-11-19 07:48:20,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:20,201 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 164 transitions. [2023-11-19 07:48:20,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-19 07:48:20,201 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 164 transitions. [2023-11-19 07:48:20,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-19 07:48:20,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:20,207 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:20,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:20,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 07:48:20,424 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:20,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:20,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1784449085, now seen corresponding path program 1 times [2023-11-19 07:48:20,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:20,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127649691] [2023-11-19 07:48:20,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:20,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:20,538 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:20,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760182751] [2023-11-19 07:48:20,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:20,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:20,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:20,545 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:20,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:48:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:20,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:48:20,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:20,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-19 07:48:20,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:20,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:20,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127649691] [2023-11-19 07:48:20,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:20,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760182751] [2023-11-19 07:48:20,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760182751] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:20,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:20,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:20,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074188938] [2023-11-19 07:48:20,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:20,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:20,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:20,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:20,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:20,751 INFO L87 Difference]: Start difference. First operand 103 states and 164 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-19 07:48:20,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:20,787 INFO L93 Difference]: Finished difference Result 203 states and 325 transitions. [2023-11-19 07:48:20,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:20,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 223 [2023-11-19 07:48:20,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:20,791 INFO L225 Difference]: With dead ends: 203 [2023-11-19 07:48:20,791 INFO L226 Difference]: Without dead ends: 103 [2023-11-19 07:48:20,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:20,794 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:20,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 312 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:48:20,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-19 07:48:20,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2023-11-19 07:48:20,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 65 states have internal predecessors, (92), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-19 07:48:20,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 162 transitions. [2023-11-19 07:48:20,820 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 162 transitions. Word has length 223 [2023-11-19 07:48:20,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:20,822 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 162 transitions. [2023-11-19 07:48:20,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-19 07:48:20,822 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 162 transitions. [2023-11-19 07:48:20,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-11-19 07:48:20,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:20,829 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:20,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-19 07:48:21,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 07:48:21,044 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:21,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:21,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1611048491, now seen corresponding path program 1 times [2023-11-19 07:48:21,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:21,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336527132] [2023-11-19 07:48:21,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:21,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:21,115 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:21,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1995445144] [2023-11-19 07:48:21,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:21,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:21,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:21,120 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:21,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:48:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:21,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:48:21,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-19 07:48:21,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:21,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:21,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336527132] [2023-11-19 07:48:21,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:21,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995445144] [2023-11-19 07:48:21,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995445144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:21,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:21,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:48:21,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011506368] [2023-11-19 07:48:21,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:21,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:21,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:21,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:21,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:21,449 INFO L87 Difference]: Start difference. First operand 102 states and 162 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-19 07:48:21,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:21,890 INFO L93 Difference]: Finished difference Result 384 states and 612 transitions. [2023-11-19 07:48:21,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:21,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 224 [2023-11-19 07:48:21,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:21,899 INFO L225 Difference]: With dead ends: 384 [2023-11-19 07:48:21,899 INFO L226 Difference]: Without dead ends: 285 [2023-11-19 07:48:21,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:21,905 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 283 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:21,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 641 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:48:21,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-11-19 07:48:21,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 204. [2023-11-19 07:48:21,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 131 states have (on average 1.4351145038167938) internal successors, (188), 131 states have internal predecessors, (188), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-19 07:48:21,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 328 transitions. [2023-11-19 07:48:21,961 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 328 transitions. Word has length 224 [2023-11-19 07:48:21,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:21,962 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 328 transitions. [2023-11-19 07:48:21,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-19 07:48:21,962 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 328 transitions. [2023-11-19 07:48:21,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-11-19 07:48:21,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:21,966 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:22,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:22,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:22,184 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:22,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:22,184 INFO L85 PathProgramCache]: Analyzing trace with hash 801701865, now seen corresponding path program 1 times [2023-11-19 07:48:22,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:22,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589260224] [2023-11-19 07:48:22,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:22,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:22,229 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:22,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815592691] [2023-11-19 07:48:22,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:22,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:22,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:22,231 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:22,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:48:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:22,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:48:22,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:22,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-19 07:48:22,537 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:22,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:22,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589260224] [2023-11-19 07:48:22,539 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:22,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815592691] [2023-11-19 07:48:22,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815592691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:22,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:22,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:48:22,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271530671] [2023-11-19 07:48:22,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:22,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:22,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:22,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:22,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:22,549 INFO L87 Difference]: Start difference. First operand 204 states and 328 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-19 07:48:22,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:22,948 INFO L93 Difference]: Finished difference Result 395 states and 630 transitions. [2023-11-19 07:48:22,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:22,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 224 [2023-11-19 07:48:22,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:22,955 INFO L225 Difference]: With dead ends: 395 [2023-11-19 07:48:22,956 INFO L226 Difference]: Without dead ends: 288 [2023-11-19 07:48:22,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:22,957 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 269 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:22,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 745 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:48:22,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-19 07:48:22,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 212. [2023-11-19 07:48:22,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 139 states have (on average 1.4460431654676258) internal successors, (201), 139 states have internal predecessors, (201), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-19 07:48:23,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 341 transitions. [2023-11-19 07:48:23,002 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 341 transitions. Word has length 224 [2023-11-19 07:48:23,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:23,003 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 341 transitions. [2023-11-19 07:48:23,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-19 07:48:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 341 transitions. [2023-11-19 07:48:23,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-11-19 07:48:23,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:23,008 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:23,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:23,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:23,224 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:23,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:23,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1024242477, now seen corresponding path program 1 times [2023-11-19 07:48:23,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:23,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550331745] [2023-11-19 07:48:23,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:23,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:23,270 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:23,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [358777986] [2023-11-19 07:48:23,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:23,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:23,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:23,272 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:23,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:48:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:23,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:48:23,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:23,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-19 07:48:23,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:23,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:23,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550331745] [2023-11-19 07:48:23,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:23,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358777986] [2023-11-19 07:48:23,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358777986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:23,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:23,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:23,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685533323] [2023-11-19 07:48:23,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:23,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:23,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:23,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:23,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:23,807 INFO L87 Difference]: Start difference. First operand 212 states and 341 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-19 07:48:24,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:24,109 INFO L93 Difference]: Finished difference Result 469 states and 754 transitions. [2023-11-19 07:48:24,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:24,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 224 [2023-11-19 07:48:24,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:24,113 INFO L225 Difference]: With dead ends: 469 [2023-11-19 07:48:24,113 INFO L226 Difference]: Without dead ends: 260 [2023-11-19 07:48:24,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:48:24,116 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 148 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:24,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 597 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:48:24,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-11-19 07:48:24,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 213. [2023-11-19 07:48:24,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 140 states have (on average 1.4357142857142857) internal successors, (201), 140 states have internal predecessors, (201), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-19 07:48:24,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 341 transitions. [2023-11-19 07:48:24,162 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 341 transitions. Word has length 224 [2023-11-19 07:48:24,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:24,163 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 341 transitions. [2023-11-19 07:48:24,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-19 07:48:24,164 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 341 transitions. [2023-11-19 07:48:24,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-11-19 07:48:24,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:24,168 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:24,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:24,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:24,374 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:24,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:24,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1164791087, now seen corresponding path program 1 times [2023-11-19 07:48:24,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:24,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809152112] [2023-11-19 07:48:24,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:24,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:24,433 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:24,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867461840] [2023-11-19 07:48:24,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:24,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:24,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:24,435 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:24,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:48:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:24,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:48:24,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1194 proven. 42 refuted. 0 times theorem prover too weak. 1144 trivial. 0 not checked. [2023-11-19 07:48:24,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:25,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 60 proven. 42 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2023-11-19 07:48:25,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:25,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809152112] [2023-11-19 07:48:25,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:25,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867461840] [2023-11-19 07:48:25,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867461840] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:25,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:48:25,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2023-11-19 07:48:25,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53007068] [2023-11-19 07:48:25,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:25,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:48:25,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:25,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:48:25,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:48:25,227 INFO L87 Difference]: Start difference. First operand 213 states and 341 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 3 states have call successors, (49), 2 states have call predecessors, (49), 4 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2023-11-19 07:48:27,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:27,897 INFO L93 Difference]: Finished difference Result 1191 states and 1822 transitions. [2023-11-19 07:48:27,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-19 07:48:27,903 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 3 states have call successors, (49), 2 states have call predecessors, (49), 4 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 224 [2023-11-19 07:48:27,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:27,911 INFO L225 Difference]: With dead ends: 1191 [2023-11-19 07:48:27,911 INFO L226 Difference]: Without dead ends: 981 [2023-11-19 07:48:27,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=986, Invalid=3046, Unknown=0, NotChecked=0, Total=4032 [2023-11-19 07:48:27,915 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 771 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:27,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1095 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-19 07:48:27,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2023-11-19 07:48:28,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 440. [2023-11-19 07:48:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 284 states have (on average 1.3767605633802817) internal successors, (391), 287 states have internal predecessors, (391), 144 states have call successors, (144), 11 states have call predecessors, (144), 11 states have return successors, (144), 141 states have call predecessors, (144), 144 states have call successors, (144) [2023-11-19 07:48:28,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 679 transitions. [2023-11-19 07:48:28,052 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 679 transitions. Word has length 224 [2023-11-19 07:48:28,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:28,056 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 679 transitions. [2023-11-19 07:48:28,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 3 states have call successors, (49), 2 states have call predecessors, (49), 4 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2023-11-19 07:48:28,057 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 679 transitions. [2023-11-19 07:48:28,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-11-19 07:48:28,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:28,062 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:28,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:28,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:28,275 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:28,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:28,276 INFO L85 PathProgramCache]: Analyzing trace with hash 355444461, now seen corresponding path program 1 times [2023-11-19 07:48:28,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:28,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866752384] [2023-11-19 07:48:28,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:28,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:28,318 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:28,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497931220] [2023-11-19 07:48:28,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:28,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:28,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:28,320 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:28,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:48:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:28,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:48:28,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1194 proven. 42 refuted. 0 times theorem prover too weak. 1144 trivial. 0 not checked. [2023-11-19 07:48:28,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:29,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 60 proven. 42 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2023-11-19 07:48:29,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:29,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866752384] [2023-11-19 07:48:29,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:29,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497931220] [2023-11-19 07:48:29,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497931220] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:29,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:48:29,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2023-11-19 07:48:29,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151922131] [2023-11-19 07:48:29,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:29,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:48:29,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:29,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:48:29,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:48:29,084 INFO L87 Difference]: Start difference. First operand 440 states and 679 transitions. Second operand has 15 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 3 states have call successors, (49), 2 states have call predecessors, (49), 4 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2023-11-19 07:48:30,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:30,213 INFO L93 Difference]: Finished difference Result 798 states and 1225 transitions. [2023-11-19 07:48:30,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-19 07:48:30,214 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 3 states have call successors, (49), 2 states have call predecessors, (49), 4 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 224 [2023-11-19 07:48:30,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:30,221 INFO L225 Difference]: With dead ends: 798 [2023-11-19 07:48:30,221 INFO L226 Difference]: Without dead ends: 560 [2023-11-19 07:48:30,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=241, Invalid=689, Unknown=0, NotChecked=0, Total=930 [2023-11-19 07:48:30,224 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 519 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:30,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 851 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:48:30,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-11-19 07:48:30,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 440. [2023-11-19 07:48:30,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 284 states have (on average 1.3732394366197183) internal successors, (390), 287 states have internal predecessors, (390), 144 states have call successors, (144), 11 states have call predecessors, (144), 11 states have return successors, (144), 141 states have call predecessors, (144), 144 states have call successors, (144) [2023-11-19 07:48:30,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 678 transitions. [2023-11-19 07:48:30,316 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 678 transitions. Word has length 224 [2023-11-19 07:48:30,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:30,316 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 678 transitions. [2023-11-19 07:48:30,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 3 states have call successors, (49), 2 states have call predecessors, (49), 4 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2023-11-19 07:48:30,317 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 678 transitions. [2023-11-19 07:48:30,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-19 07:48:30,320 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:30,321 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:30,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:30,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:30,536 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:30,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:30,536 INFO L85 PathProgramCache]: Analyzing trace with hash 670260296, now seen corresponding path program 1 times [2023-11-19 07:48:30,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:30,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254885119] [2023-11-19 07:48:30,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:30,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:30,573 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:30,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [909960925] [2023-11-19 07:48:30,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:30,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:30,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:30,574 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:30,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e53ad07-8a7e-4373-958c-8d6e8683c90e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:48:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:30,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 07:48:30,782 INFO L285 TraceCheckSpWp]: Computing forward predicates...