./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-79.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_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/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_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-79.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/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_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/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 32cc6da12107835fbba84157088ec5af8a04f69b7f7a6f7a2a92488ba931be42 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:00:48,825 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:00:48,970 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:00:48,978 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:00:48,980 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:00:49,026 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:00:49,027 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:00:49,028 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:00:49,029 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:00:49,037 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:00:49,039 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:00:49,040 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:00:49,040 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:00:49,043 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:00:49,043 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:00:49,044 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:00:49,044 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:00:49,045 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:00:49,045 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:00:49,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:00:49,047 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:00:49,047 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:00:49,048 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:00:49,048 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:00:49,049 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:00:49,050 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:00:49,050 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:00:49,051 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:00:49,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:49,052 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:00:49,054 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:00:49,054 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:00:49,055 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:00:49,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:00:49,055 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:00:49,056 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:00:49,056 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:00:49,056 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:00:49,056 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:00:49,057 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_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32cc6da12107835fbba84157088ec5af8a04f69b7f7a6f7a2a92488ba931be42 [2023-11-19 08:00:49,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:00:49,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:00:49,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:00:49,402 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:00:49,403 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:00:49,404 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-79.i [2023-11-19 08:00:52,690 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:00:53,025 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:00:53,027 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-79.i [2023-11-19 08:00:53,042 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/data/20a50799d/7f0d3300b8c64904aac3c144487475da/FLAGc906b0600 [2023-11-19 08:00:53,057 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/data/20a50799d/7f0d3300b8c64904aac3c144487475da [2023-11-19 08:00:53,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:00:53,061 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:00:53,063 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:53,063 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:00:53,068 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:00:53,069 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:53" (1/1) ... [2023-11-19 08:00:53,070 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57e497aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:53, skipping insertion in model container [2023-11-19 08:00:53,070 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:53" (1/1) ... [2023-11-19 08:00:53,131 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:00:53,307 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_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-79.i[916,929] [2023-11-19 08:00:53,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:53,628 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:00:53,639 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_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-79.i[916,929] [2023-11-19 08:00:53,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:53,806 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:00:53,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:53 WrapperNode [2023-11-19 08:00:53,807 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:53,808 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:53,808 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:00:53,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:00:53,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:53" (1/1) ... [2023-11-19 08:00:53,847 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:53" (1/1) ... [2023-11-19 08:00:53,941 INFO L138 Inliner]: procedures = 26, calls = 135, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 819 [2023-11-19 08:00:53,942 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:53,943 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:00:53,943 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:00:53,943 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:00:53,953 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:53" (1/1) ... [2023-11-19 08:00:53,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:53" (1/1) ... [2023-11-19 08:00:53,970 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:53" (1/1) ... [2023-11-19 08:00:53,971 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:53" (1/1) ... [2023-11-19 08:00:54,003 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:53" (1/1) ... [2023-11-19 08:00:54,011 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:53" (1/1) ... [2023-11-19 08:00:54,034 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:53" (1/1) ... [2023-11-19 08:00:54,041 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:53" (1/1) ... [2023-11-19 08:00:54,051 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:00:54,052 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:00:54,052 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:00:54,052 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:00:54,053 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:53" (1/1) ... [2023-11-19 08:00:54,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:54,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:54,084 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:54,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:00:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:00:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:00:54,134 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:00:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:00:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:00:54,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:00:54,473 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:00:54,476 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:00:55,883 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:00:55,906 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:00:55,906 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:00:55,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:55 BoogieIcfgContainer [2023-11-19 08:00:55,920 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:00:55,924 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:00:55,925 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:00:55,928 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:00:55,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:53" (1/3) ... [2023-11-19 08:00:55,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521aaf43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:55, skipping insertion in model container [2023-11-19 08:00:55,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:53" (2/3) ... [2023-11-19 08:00:55,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521aaf43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:55, skipping insertion in model container [2023-11-19 08:00:55,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:55" (3/3) ... [2023-11-19 08:00:55,933 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-79.i [2023-11-19 08:00:55,953 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:00:55,953 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:00:56,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:56,071 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;@4815df23, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:56,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:00:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 335 states, 210 states have (on average 1.5523809523809524) internal successors, (326), 211 states have internal predecessors, (326), 122 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2023-11-19 08:00:56,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2023-11-19 08:00:56,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:56,145 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:56,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:56,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:56,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1842846856, now seen corresponding path program 1 times [2023-11-19 08:00:56,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:56,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170466711] [2023-11-19 08:00:56,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:56,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:56,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:56,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170466711] [2023-11-19 08:00:56,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:00:56,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557215872] [2023-11-19 08:00:56,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:56,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:56,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:56,791 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:56,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:00:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:57,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 1819 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:00:57,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:57,604 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 29282 trivial. 0 not checked. [2023-11-19 08:00:57,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:00:57,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557215872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:57,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:57,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:57,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849860659] [2023-11-19 08:00:57,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:57,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:00:57,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:57,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:00:57,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:00:57,660 INFO L87 Difference]: Start difference. First operand has 335 states, 210 states have (on average 1.5523809523809524) internal successors, (326), 211 states have internal predecessors, (326), 122 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) Second operand has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 2 states have call successors, (122), 2 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 2 states have call successors, (122) [2023-11-19 08:00:57,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:57,745 INFO L93 Difference]: Finished difference Result 663 states and 1256 transitions. [2023-11-19 08:00:57,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:00:57,747 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 2 states have call successors, (122), 2 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 2 states have call successors, (122) Word has length 771 [2023-11-19 08:00:57,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:57,761 INFO L225 Difference]: With dead ends: 663 [2023-11-19 08:00:57,761 INFO L226 Difference]: Without dead ends: 331 [2023-11-19 08:00:57,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 770 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 08:00:57,772 INFO L413 NwaCegarLoop]: 560 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, 560 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 08:00:57,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:57,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-11-19 08:00:57,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2023-11-19 08:00:57,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 207 states have (on average 1.5265700483091786) internal successors, (316), 207 states have internal predecessors, (316), 122 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2023-11-19 08:00:57,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 560 transitions. [2023-11-19 08:00:57,886 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 560 transitions. Word has length 771 [2023-11-19 08:00:57,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:57,887 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 560 transitions. [2023-11-19 08:00:57,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 2 states have call successors, (122), 2 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 2 states have call successors, (122) [2023-11-19 08:00:57,888 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 560 transitions. [2023-11-19 08:00:57,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2023-11-19 08:00:57,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:57,914 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:57,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:58,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 08:00:58,139 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:58,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:58,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1332505231, now seen corresponding path program 1 times [2023-11-19 08:00:58,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:58,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266396310] [2023-11-19 08:00:58,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:58,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:58,405 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:58,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673141366] [2023-11-19 08:00:58,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:58,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:58,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:58,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:58,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:00:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:59,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 1822 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:00:59,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:59,276 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-11-19 08:00:59,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:00:59,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:59,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266396310] [2023-11-19 08:00:59,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:00:59,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673141366] [2023-11-19 08:00:59,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673141366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:59,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:59,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:00:59,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125423256] [2023-11-19 08:00:59,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:59,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:00:59,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:59,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:00:59,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:00:59,288 INFO L87 Difference]: Start difference. First operand 331 states and 560 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-19 08:00:59,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:59,449 INFO L93 Difference]: Finished difference Result 856 states and 1457 transitions. [2023-11-19 08:00:59,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:00:59,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 772 [2023-11-19 08:00:59,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:59,464 INFO L225 Difference]: With dead ends: 856 [2023-11-19 08:00:59,467 INFO L226 Difference]: Without dead ends: 528 [2023-11-19 08:00:59,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 769 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 08:00:59,471 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 301 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:59,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 2064 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:59,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2023-11-19 08:00:59,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 525. [2023-11-19 08:00:59,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 355 states have (on average 1.5830985915492957) internal successors, (562), 356 states have internal predecessors, (562), 167 states have call successors, (167), 2 states have call predecessors, (167), 2 states have return successors, (167), 166 states have call predecessors, (167), 167 states have call successors, (167) [2023-11-19 08:00:59,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 896 transitions. [2023-11-19 08:00:59,598 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 896 transitions. Word has length 772 [2023-11-19 08:00:59,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:59,601 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 896 transitions. [2023-11-19 08:00:59,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-19 08:00:59,602 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 896 transitions. [2023-11-19 08:00:59,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2023-11-19 08:00:59,612 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:59,613 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:59,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:59,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:59,838 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:59,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:59,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1395704115, now seen corresponding path program 1 times [2023-11-19 08:00:59,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:59,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454523466] [2023-11-19 08:00:59,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:59,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:00,024 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:00,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1421896661] [2023-11-19 08:01:00,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:00,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:00,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:00,031 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:00,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:01:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:00,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 1823 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:01:00,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:00,770 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-11-19 08:01:00,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:00,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:00,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454523466] [2023-11-19 08:01:00,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:00,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421896661] [2023-11-19 08:01:00,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421896661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:00,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:00,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:01:00,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665093268] [2023-11-19 08:01:00,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:00,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:01:00,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:00,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:01:00,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:01:00,786 INFO L87 Difference]: Start difference. First operand 525 states and 896 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-19 08:01:00,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:00,881 INFO L93 Difference]: Finished difference Result 1375 states and 2343 transitions. [2023-11-19 08:01:00,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:01:00,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 772 [2023-11-19 08:01:00,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:00,899 INFO L225 Difference]: With dead ends: 1375 [2023-11-19 08:01:00,899 INFO L226 Difference]: Without dead ends: 853 [2023-11-19 08:01:00,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 770 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 08:01:00,905 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 266 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:00,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1100 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:01:00,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2023-11-19 08:01:01,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 849. [2023-11-19 08:01:01,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 595 states have (on average 1.591596638655462) internal successors, (947), 598 states have internal predecessors, (947), 249 states have call successors, (249), 4 states have call predecessors, (249), 4 states have return successors, (249), 246 states have call predecessors, (249), 249 states have call successors, (249) [2023-11-19 08:01:01,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1445 transitions. [2023-11-19 08:01:01,040 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1445 transitions. Word has length 772 [2023-11-19 08:01:01,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:01,043 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1445 transitions. [2023-11-19 08:01:01,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-19 08:01:01,043 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1445 transitions. [2023-11-19 08:01:01,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-11-19 08:01:01,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:01,053 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:01,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:01,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:01,267 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:01,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:01,268 INFO L85 PathProgramCache]: Analyzing trace with hash -772646101, now seen corresponding path program 1 times [2023-11-19 08:01:01,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:01,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844554055] [2023-11-19 08:01:01,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:01,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:01,430 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:01,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605548761] [2023-11-19 08:01:01,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:01,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:01,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:01,433 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:01,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:01:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:02,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:01:02,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:03,614 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-11-19 08:01:03,614 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:03,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:03,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844554055] [2023-11-19 08:01:03,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:03,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605548761] [2023-11-19 08:01:03,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605548761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:03,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:03,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:01:03,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451927846] [2023-11-19 08:01:03,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:03,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:01:03,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:03,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:01:03,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:01:03,620 INFO L87 Difference]: Start difference. First operand 849 states and 1445 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-19 08:01:05,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:05,103 INFO L93 Difference]: Finished difference Result 3757 states and 6409 transitions. [2023-11-19 08:01:05,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:01:05,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 773 [2023-11-19 08:01:05,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:05,128 INFO L225 Difference]: With dead ends: 3757 [2023-11-19 08:01:05,129 INFO L226 Difference]: Without dead ends: 2911 [2023-11-19 08:01:05,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 769 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 08:01:05,140 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 1414 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 2008 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:05,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 2008 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 08:01:05,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2023-11-19 08:01:05,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2739. [2023-11-19 08:01:05,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2739 states, 1979 states have (on average 1.6078827690752906) internal successors, (3182), 1988 states have internal predecessors, (3182), 747 states have call successors, (747), 12 states have call predecessors, (747), 12 states have return successors, (747), 738 states have call predecessors, (747), 747 states have call successors, (747) [2023-11-19 08:01:05,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 4676 transitions. [2023-11-19 08:01:05,589 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 4676 transitions. Word has length 773 [2023-11-19 08:01:05,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:05,592 INFO L495 AbstractCegarLoop]: Abstraction has 2739 states and 4676 transitions. [2023-11-19 08:01:05,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-19 08:01:05,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 4676 transitions. [2023-11-19 08:01:05,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-11-19 08:01:05,604 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:05,605 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:05,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-19 08:01:05,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:05,830 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:05,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:05,831 INFO L85 PathProgramCache]: Analyzing trace with hash 708584128, now seen corresponding path program 1 times [2023-11-19 08:01:05,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:05,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046306168] [2023-11-19 08:01:05,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:05,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:05,987 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:05,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433382528] [2023-11-19 08:01:05,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:05,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:05,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:05,989 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:06,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:01:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:06,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 1826 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 08:01:06,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:08,038 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-11-19 08:01:08,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:08,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:08,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046306168] [2023-11-19 08:01:08,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:08,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433382528] [2023-11-19 08:01:08,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433382528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:08,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:08,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:01:08,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013309119] [2023-11-19 08:01:08,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:08,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:01:08,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:08,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:01:08,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:01:08,050 INFO L87 Difference]: Start difference. First operand 2739 states and 4676 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 6 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-19 08:01:10,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:10,317 INFO L93 Difference]: Finished difference Result 5773 states and 9801 transitions. [2023-11-19 08:01:10,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:01:10,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 6 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 774 [2023-11-19 08:01:10,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:10,347 INFO L225 Difference]: With dead ends: 5773 [2023-11-19 08:01:10,347 INFO L226 Difference]: Without dead ends: 3037 [2023-11-19 08:01:10,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 768 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2023-11-19 08:01:10,359 INFO L413 NwaCegarLoop]: 946 mSDtfsCounter, 1362 mSDsluCounter, 2320 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 3266 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 576 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:10,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1362 Valid, 3266 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [576 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 08:01:10,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2023-11-19 08:01:10,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 2739. [2023-11-19 08:01:10,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2739 states, 1979 states have (on average 1.6028297119757453) internal successors, (3172), 1988 states have internal predecessors, (3172), 747 states have call successors, (747), 12 states have call predecessors, (747), 12 states have return successors, (747), 738 states have call predecessors, (747), 747 states have call successors, (747) [2023-11-19 08:01:10,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 4666 transitions. [2023-11-19 08:01:10,798 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 4666 transitions. Word has length 774 [2023-11-19 08:01:10,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:10,799 INFO L495 AbstractCegarLoop]: Abstraction has 2739 states and 4666 transitions. [2023-11-19 08:01:10,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 6 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-19 08:01:10,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 4666 transitions. [2023-11-19 08:01:10,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-11-19 08:01:10,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:10,843 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:10,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-19 08:01:11,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:11,071 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:11,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:11,072 INFO L85 PathProgramCache]: Analyzing trace with hash 172738353, now seen corresponding path program 1 times [2023-11-19 08:01:11,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:11,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890940826] [2023-11-19 08:01:11,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:11,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:11,178 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:11,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414003769] [2023-11-19 08:01:11,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:11,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:11,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:11,181 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:11,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:01:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:11,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 08:01:11,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:14,649 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-11-19 08:01:14,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:14,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:14,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890940826] [2023-11-19 08:01:14,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:14,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414003769] [2023-11-19 08:01:14,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414003769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:14,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:14,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:01:14,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343160188] [2023-11-19 08:01:14,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:14,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:01:14,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:14,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:01:14,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:01:14,655 INFO L87 Difference]: Start difference. First operand 2739 states and 4666 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-19 08:01:15,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:15,296 INFO L93 Difference]: Finished difference Result 7407 states and 12608 transitions. [2023-11-19 08:01:15,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:01:15,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 775 [2023-11-19 08:01:15,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:15,335 INFO L225 Difference]: With dead ends: 7407 [2023-11-19 08:01:15,335 INFO L226 Difference]: Without dead ends: 4671 [2023-11-19 08:01:15,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 772 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 08:01:15,347 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 484 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:15,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 1650 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:01:15,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4671 states. [2023-11-19 08:01:16,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4671 to 4619. [2023-11-19 08:01:16,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4619 states, 3353 states have (on average 1.5917089173874142) internal successors, (5337), 3368 states have internal predecessors, (5337), 1245 states have call successors, (1245), 20 states have call predecessors, (1245), 20 states have return successors, (1245), 1230 states have call predecessors, (1245), 1245 states have call successors, (1245) [2023-11-19 08:01:16,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4619 states to 4619 states and 7827 transitions. [2023-11-19 08:01:16,189 INFO L78 Accepts]: Start accepts. Automaton has 4619 states and 7827 transitions. Word has length 775 [2023-11-19 08:01:16,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:16,190 INFO L495 AbstractCegarLoop]: Abstraction has 4619 states and 7827 transitions. [2023-11-19 08:01:16,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-19 08:01:16,192 INFO L276 IsEmpty]: Start isEmpty. Operand 4619 states and 7827 transitions. [2023-11-19 08:01:16,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-11-19 08:01:16,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:16,204 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:16,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:16,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 08:01:16,419 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:16,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:16,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1239473267, now seen corresponding path program 1 times [2023-11-19 08:01:16,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:16,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242208019] [2023-11-19 08:01:16,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:16,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:16,587 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:16,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324840533] [2023-11-19 08:01:16,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:16,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:16,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:16,589 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:16,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:01:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:17,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:01:17,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:17,302 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-11-19 08:01:17,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:17,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:17,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242208019] [2023-11-19 08:01:17,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:17,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324840533] [2023-11-19 08:01:17,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324840533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:17,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:17,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:01:17,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598887005] [2023-11-19 08:01:17,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:17,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:01:17,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:17,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:01:17,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:01:17,307 INFO L87 Difference]: Start difference. First operand 4619 states and 7827 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-19 08:01:17,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:17,665 INFO L93 Difference]: Finished difference Result 9235 states and 15651 transitions. [2023-11-19 08:01:17,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:01:17,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 775 [2023-11-19 08:01:17,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:17,706 INFO L225 Difference]: With dead ends: 9235 [2023-11-19 08:01:17,706 INFO L226 Difference]: Without dead ends: 4619 [2023-11-19 08:01:17,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 773 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 08:01:17,725 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 19 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:17,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1092 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:01:17,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4619 states. [2023-11-19 08:01:18,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4619 to 4619. [2023-11-19 08:01:18,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4619 states, 3353 states have (on average 1.5845511482254697) internal successors, (5313), 3368 states have internal predecessors, (5313), 1245 states have call successors, (1245), 20 states have call predecessors, (1245), 20 states have return successors, (1245), 1230 states have call predecessors, (1245), 1245 states have call successors, (1245) [2023-11-19 08:01:18,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4619 states to 4619 states and 7803 transitions. [2023-11-19 08:01:18,395 INFO L78 Accepts]: Start accepts. Automaton has 4619 states and 7803 transitions. Word has length 775 [2023-11-19 08:01:18,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:18,397 INFO L495 AbstractCegarLoop]: Abstraction has 4619 states and 7803 transitions. [2023-11-19 08:01:18,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-19 08:01:18,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4619 states and 7803 transitions. [2023-11-19 08:01:18,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-11-19 08:01:18,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:18,410 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:18,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:18,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:18,638 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:18,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:18,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1497638705, now seen corresponding path program 1 times [2023-11-19 08:01:18,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:18,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630819467] [2023-11-19 08:01:18,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:18,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:18,759 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:18,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869332151] [2023-11-19 08:01:18,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:18,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:18,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:18,762 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:18,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 08:01:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:19,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:01:19,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 7401 proven. 51 refuted. 0 times theorem prover too weak. 22072 trivial. 0 not checked. [2023-11-19 08:01:19,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 312 proven. 51 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-11-19 08:01:20,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:20,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630819467] [2023-11-19 08:01:20,267 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:20,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869332151] [2023-11-19 08:01:20,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869332151] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:20,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:01:20,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-19 08:01:20,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854547577] [2023-11-19 08:01:20,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:20,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:01:20,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:20,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:01:20,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:01:20,273 INFO L87 Difference]: Start difference. First operand 4619 states and 7803 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 2 states have call successors, (139), 2 states have call predecessors, (139), 4 states have return successors, (140), 2 states have call predecessors, (140), 2 states have call successors, (140) [2023-11-19 08:01:21,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:21,234 INFO L93 Difference]: Finished difference Result 9305 states and 15668 transitions. [2023-11-19 08:01:21,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:01:21,235 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 2 states have call successors, (139), 2 states have call predecessors, (139), 4 states have return successors, (140), 2 states have call predecessors, (140), 2 states have call successors, (140) Word has length 775 [2023-11-19 08:01:21,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:21,282 INFO L225 Difference]: With dead ends: 9305 [2023-11-19 08:01:21,282 INFO L226 Difference]: Without dead ends: 4689 [2023-11-19 08:01:21,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1552 GetRequests, 1542 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:01:21,302 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 382 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:21,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1049 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 08:01:21,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4689 states. [2023-11-19 08:01:22,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4689 to 4639. [2023-11-19 08:01:22,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4639 states, 3368 states have (on average 1.5748218527315914) internal successors, (5304), 3383 states have internal predecessors, (5304), 1245 states have call successors, (1245), 25 states have call predecessors, (1245), 25 states have return successors, (1245), 1230 states have call predecessors, (1245), 1245 states have call successors, (1245) [2023-11-19 08:01:22,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4639 states to 4639 states and 7794 transitions. [2023-11-19 08:01:22,056 INFO L78 Accepts]: Start accepts. Automaton has 4639 states and 7794 transitions. Word has length 775 [2023-11-19 08:01:22,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:22,057 INFO L495 AbstractCegarLoop]: Abstraction has 4639 states and 7794 transitions. [2023-11-19 08:01:22,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 2 states have call successors, (139), 2 states have call predecessors, (139), 4 states have return successors, (140), 2 states have call predecessors, (140), 2 states have call successors, (140) [2023-11-19 08:01:22,058 INFO L276 IsEmpty]: Start isEmpty. Operand 4639 states and 7794 transitions. [2023-11-19 08:01:22,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-11-19 08:01:22,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:22,108 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:22,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:22,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:22,309 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:22,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:22,309 INFO L85 PathProgramCache]: Analyzing trace with hash -835753933, now seen corresponding path program 1 times [2023-11-19 08:01:22,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:22,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819566574] [2023-11-19 08:01:22,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:22,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:22,421 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:22,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768897346] [2023-11-19 08:01:22,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:22,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:22,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:22,423 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:22,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 08:01:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:23,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 1832 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:01:23,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:23,415 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 8077 proven. 57 refuted. 0 times theorem prover too weak. 21390 trivial. 0 not checked. [2023-11-19 08:01:23,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:23,858 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 306 proven. 57 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-11-19 08:01:23,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:23,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819566574] [2023-11-19 08:01:23,859 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:23,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768897346] [2023-11-19 08:01:23,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768897346] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:23,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:01:23,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-19 08:01:23,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715844869] [2023-11-19 08:01:23,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:23,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:01:23,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:23,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:01:23,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:01:23,866 INFO L87 Difference]: Start difference. First operand 4639 states and 7794 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 2 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) [2023-11-19 08:01:24,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:24,952 INFO L93 Difference]: Finished difference Result 9355 states and 15660 transitions. [2023-11-19 08:01:24,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:01:24,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 2 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) Word has length 775 [2023-11-19 08:01:24,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:24,999 INFO L225 Difference]: With dead ends: 9355 [2023-11-19 08:01:24,999 INFO L226 Difference]: Without dead ends: 4719 [2023-11-19 08:01:25,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1552 GetRequests, 1542 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:01:25,017 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 368 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:25,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1031 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 08:01:25,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4719 states. [2023-11-19 08:01:25,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4719 to 4659. [2023-11-19 08:01:25,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4659 states, 3383 states have (on average 1.550990245344369) internal successors, (5247), 3398 states have internal predecessors, (5247), 1245 states have call successors, (1245), 30 states have call predecessors, (1245), 30 states have return successors, (1245), 1230 states have call predecessors, (1245), 1245 states have call successors, (1245) [2023-11-19 08:01:25,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4659 states to 4659 states and 7737 transitions. [2023-11-19 08:01:25,823 INFO L78 Accepts]: Start accepts. Automaton has 4659 states and 7737 transitions. Word has length 775 [2023-11-19 08:01:25,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:25,825 INFO L495 AbstractCegarLoop]: Abstraction has 4659 states and 7737 transitions. [2023-11-19 08:01:25,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 2 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) [2023-11-19 08:01:25,825 INFO L276 IsEmpty]: Start isEmpty. Operand 4659 states and 7737 transitions. [2023-11-19 08:01:25,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-11-19 08:01:25,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:25,839 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:25,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-19 08:01:26,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:26,066 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:26,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:26,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1343515215, now seen corresponding path program 1 times [2023-11-19 08:01:26,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:26,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686590195] [2023-11-19 08:01:26,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:26,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:26,168 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:26,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154179413] [2023-11-19 08:01:26,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:26,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:26,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:26,170 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:26,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a1d8aa-a7da-4f95-9617-eb0cad0ed5ba/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 08:01:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:26,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 1827 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 08:01:26,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 8721 proven. 63 refuted. 0 times theorem prover too weak. 20740 trivial. 0 not checked. [2023-11-19 08:01:28,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:29,989 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 300 proven. 63 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-11-19 08:01:29,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:29,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686590195] [2023-11-19 08:01:29,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:29,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154179413] [2023-11-19 08:01:29,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154179413] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:29,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:01:29,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-11-19 08:01:29,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114131902] [2023-11-19 08:01:29,992 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:29,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 08:01:29,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:29,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 08:01:29,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-11-19 08:01:29,997 INFO L87 Difference]: Start difference. First operand 4659 states and 7737 transitions. Second operand has 18 states, 18 states have (on average 17.5) internal successors, (315), 18 states have internal predecessors, (315), 4 states have call successors, (244), 3 states have call predecessors, (244), 5 states have return successors, (244), 4 states have call predecessors, (244), 4 states have call successors, (244)