./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-37.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-37.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 90de0053d184a453dc3a33f57409c1c246f48963f5fd9431c484b6f29206cf7b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:41:56,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:41:56,970 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:41:56,975 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:41:56,976 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:41:57,002 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:41:57,003 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:41:57,004 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:41:57,004 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:41:57,005 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:41:57,006 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:41:57,006 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:41:57,007 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:41:57,008 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:41:57,008 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:41:57,009 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:41:57,009 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:41:57,010 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:41:57,010 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:41:57,011 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:41:57,011 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:41:57,012 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:41:57,012 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:41:57,013 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:41:57,013 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:41:57,014 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:41:57,014 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:41:57,014 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:41:57,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:41:57,015 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:41:57,016 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:41:57,016 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:41:57,016 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:41:57,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:41:57,017 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:41:57,017 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:41:57,017 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:41:57,017 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:41:57,018 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:41:57,018 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_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90de0053d184a453dc3a33f57409c1c246f48963f5fd9431c484b6f29206cf7b [2023-11-06 22:41:57,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:41:57,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:41:57,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:41:57,304 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:41:57,305 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:41:57,306 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-37.i [2023-11-06 22:42:00,384 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:42:00,601 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:42:00,602 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-37.i [2023-11-06 22:42:00,617 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/data/fc5e86915/90efffbd1dc64de0973c14640dac1923/FLAG620c2d62e [2023-11-06 22:42:00,633 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/data/fc5e86915/90efffbd1dc64de0973c14640dac1923 [2023-11-06 22:42:00,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:42:00,638 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:42:00,639 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:42:00,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:42:00,646 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:42:00,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:42:00" (1/1) ... [2023-11-06 22:42:00,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d45c6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:00, skipping insertion in model container [2023-11-06 22:42:00,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:42:00" (1/1) ... [2023-11-06 22:42:00,681 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:42:00,862 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_e379eb8e-4e6b-432f-a741-0e25acf49fa3/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-37.i[916,929] [2023-11-06 22:42:00,943 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:42:00,961 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:42:00,979 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_e379eb8e-4e6b-432f-a741-0e25acf49fa3/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-37.i[916,929] [2023-11-06 22:42:01,037 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:42:01,064 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:42:01,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:01 WrapperNode [2023-11-06 22:42:01,064 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:42:01,066 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:42:01,066 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:42:01,067 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:42:01,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:01" (1/1) ... [2023-11-06 22:42:01,096 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:01" (1/1) ... [2023-11-06 22:42:01,175 INFO L138 Inliner]: procedures = 29, calls = 157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 430 [2023-11-06 22:42:01,180 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:42:01,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:42:01,182 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:42:01,183 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:42:01,195 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:01" (1/1) ... [2023-11-06 22:42:01,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:01" (1/1) ... [2023-11-06 22:42:01,208 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:01" (1/1) ... [2023-11-06 22:42:01,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:01" (1/1) ... [2023-11-06 22:42:01,239 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:01" (1/1) ... [2023-11-06 22:42:01,247 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:01" (1/1) ... [2023-11-06 22:42:01,251 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:01" (1/1) ... [2023-11-06 22:42:01,259 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:01" (1/1) ... [2023-11-06 22:42:01,275 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:42:01,284 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:42:01,287 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:42:01,287 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:42:01,289 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:01" (1/1) ... [2023-11-06 22:42:01,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:42:01,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:01,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:42:01,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:42:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:42:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-06 22:42:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:42:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-06 22:42:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:42:01,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-11-06 22:42:01,396 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:42:01,397 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:42:01,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:42:01,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:42:01,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:42:01,599 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:42:01,606 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:42:02,307 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:42:02,328 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:42:02,328 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:42:02,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:42:02 BoogieIcfgContainer [2023-11-06 22:42:02,331 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:42:02,335 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:42:02,335 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:42:02,338 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:42:02,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:42:00" (1/3) ... [2023-11-06 22:42:02,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156b2ee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:42:02, skipping insertion in model container [2023-11-06 22:42:02,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:01" (2/3) ... [2023-11-06 22:42:02,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156b2ee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:42:02, skipping insertion in model container [2023-11-06 22:42:02,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:42:02" (3/3) ... [2023-11-06 22:42:02,345 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-37.i [2023-11-06 22:42:02,363 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:42:02,363 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:42:02,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:42:02,436 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=LoopsAndPotentialCycles, 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;@16e63dd8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:42:02,437 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:42:02,443 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 86 states have internal predecessors, (122), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:42:02,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-06 22:42:02,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:02,461 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:02,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:02,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:02,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1316505474, now seen corresponding path program 1 times [2023-11-06 22:42:02,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:02,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397116653] [2023-11-06 22:42:02,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:02,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:02,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:02,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397116653] [2023-11-06 22:42:02,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:42:02,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547694313] [2023-11-06 22:42:02,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:02,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:02,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:02,991 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:03,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:42:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:03,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:42:03,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:03,518 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2023-11-06 22:42:03,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:03,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547694313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:03,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:03,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:42:03,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841615671] [2023-11-06 22:42:03,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:03,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:42:03,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:03,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:42:03,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:42:03,610 INFO L87 Difference]: Start difference. First operand has 103 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 86 states have internal predecessors, (122), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-06 22:42:03,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:03,651 INFO L93 Difference]: Finished difference Result 199 states and 313 transitions. [2023-11-06 22:42:03,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:42:03,654 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 124 [2023-11-06 22:42:03,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:03,665 INFO L225 Difference]: With dead ends: 199 [2023-11-06 22:42:03,666 INFO L226 Difference]: Without dead ends: 99 [2023-11-06 22:42:03,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:42:03,676 INFO L413 NwaCegarLoop]: 145 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, 145 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 [2023-11-06 22:42:03,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:42:03,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-06 22:42:03,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-11-06 22:42:03,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 82 states have (on average 1.4024390243902438) internal successors, (115), 82 states have internal predecessors, (115), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:42:03,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 145 transitions. [2023-11-06 22:42:03,804 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 145 transitions. Word has length 124 [2023-11-06 22:42:03,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:03,807 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 145 transitions. [2023-11-06 22:42:03,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-06 22:42:03,808 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 145 transitions. [2023-11-06 22:42:03,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-06 22:42:03,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:03,819 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:03,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:04,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:42:04,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:04,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:04,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1135908192, now seen corresponding path program 1 times [2023-11-06 22:42:04,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:04,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100351315] [2023-11-06 22:42:04,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:04,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:04,144 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:04,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672570578] [2023-11-06 22:42:04,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:04,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:04,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:04,146 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:04,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:42:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:04,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:42:04,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:04,551 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 22:42:04,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:04,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:04,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100351315] [2023-11-06 22:42:04,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:42:04,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672570578] [2023-11-06 22:42:04,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672570578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:04,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:04,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:42:04,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449485103] [2023-11-06 22:42:04,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:04,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:42:04,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:04,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:42:04,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:42:04,565 INFO L87 Difference]: Start difference. First operand 99 states and 145 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:04,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:04,677 INFO L93 Difference]: Finished difference Result 203 states and 298 transitions. [2023-11-06 22:42:04,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:42:04,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 124 [2023-11-06 22:42:04,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:04,681 INFO L225 Difference]: With dead ends: 203 [2023-11-06 22:42:04,681 INFO L226 Difference]: Without dead ends: 107 [2023-11-06 22:42:04,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:42:04,685 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 12 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:04,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 420 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:42:04,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-06 22:42:04,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 101. [2023-11-06 22:42:04,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 84 states have (on average 1.3928571428571428) internal successors, (117), 84 states have internal predecessors, (117), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:42:04,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 147 transitions. [2023-11-06 22:42:04,712 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 147 transitions. Word has length 124 [2023-11-06 22:42:04,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:04,717 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 147 transitions. [2023-11-06 22:42:04,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:04,718 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 147 transitions. [2023-11-06 22:42:04,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-06 22:42:04,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:04,726 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:04,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:04,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:04,934 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:04,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:04,935 INFO L85 PathProgramCache]: Analyzing trace with hash 639099170, now seen corresponding path program 1 times [2023-11-06 22:42:04,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:04,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104875995] [2023-11-06 22:42:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:04,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:05,025 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:05,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301356344] [2023-11-06 22:42:05,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:05,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:05,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:05,028 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:05,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:42:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:05,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:42:05,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:05,365 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 22:42:05,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:05,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:05,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104875995] [2023-11-06 22:42:05,366 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:42:05,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301356344] [2023-11-06 22:42:05,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301356344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:05,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:05,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:42:05,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143094425] [2023-11-06 22:42:05,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:05,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:42:05,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:05,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:42:05,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:42:05,372 INFO L87 Difference]: Start difference. First operand 101 states and 147 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:05,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:05,418 INFO L93 Difference]: Finished difference Result 203 states and 296 transitions. [2023-11-06 22:42:05,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:42:05,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 124 [2023-11-06 22:42:05,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:05,423 INFO L225 Difference]: With dead ends: 203 [2023-11-06 22:42:05,423 INFO L226 Difference]: Without dead ends: 105 [2023-11-06 22:42:05,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:42:05,427 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 3 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:05,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 419 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:42:05,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-06 22:42:05,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2023-11-06 22:42:05,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 86 states have (on average 1.3837209302325582) internal successors, (119), 86 states have internal predecessors, (119), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:42:05,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 149 transitions. [2023-11-06 22:42:05,443 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 149 transitions. Word has length 124 [2023-11-06 22:42:05,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:05,444 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 149 transitions. [2023-11-06 22:42:05,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:05,445 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 149 transitions. [2023-11-06 22:42:05,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-06 22:42:05,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:05,448 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:05,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:05,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:05,656 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:05,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:05,657 INFO L85 PathProgramCache]: Analyzing trace with hash 640946212, now seen corresponding path program 1 times [2023-11-06 22:42:05,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:05,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220419899] [2023-11-06 22:42:05,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:05,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:05,776 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:05,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962228854] [2023-11-06 22:42:05,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:05,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:05,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:05,784 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:05,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:42:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:06,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:42:06,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:06,901 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2023-11-06 22:42:06,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:06,976 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 15 [2023-11-06 22:42:07,053 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:42:07,054 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 28 [2023-11-06 22:42:07,088 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-11-06 22:42:07,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:07,254 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:42:07,254 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 42 [2023-11-06 22:42:07,266 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:42:07,267 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 34 [2023-11-06 22:42:07,494 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 22:42:07,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:07,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220419899] [2023-11-06 22:42:07,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:42:07,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962228854] [2023-11-06 22:42:07,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962228854] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:07,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:42:07,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-11-06 22:42:07,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472322059] [2023-11-06 22:42:07,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:07,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:42:07,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:07,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:42:07,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=115, Unknown=5, NotChecked=0, Total=156 [2023-11-06 22:42:07,504 INFO L87 Difference]: Start difference. First operand 103 states and 149 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:08,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:08,420 INFO L93 Difference]: Finished difference Result 206 states and 298 transitions. [2023-11-06 22:42:08,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:42:08,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 124 [2023-11-06 22:42:08,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:08,424 INFO L225 Difference]: With dead ends: 206 [2023-11-06 22:42:08,424 INFO L226 Difference]: Without dead ends: 106 [2023-11-06 22:42:08,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=195, Unknown=9, NotChecked=0, Total=272 [2023-11-06 22:42:08,427 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 205 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:08,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 310 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 233 Invalid, 2 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:42:08,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-06 22:42:08,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2023-11-06 22:42:08,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 86 states have (on average 1.372093023255814) internal successors, (118), 86 states have internal predecessors, (118), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:42:08,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 148 transitions. [2023-11-06 22:42:08,460 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 148 transitions. Word has length 124 [2023-11-06 22:42:08,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:08,463 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 148 transitions. [2023-11-06 22:42:08,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:08,464 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 148 transitions. [2023-11-06 22:42:08,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-06 22:42:08,468 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:08,468 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:08,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:08,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:08,678 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:08,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:08,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1804582207, now seen corresponding path program 1 times [2023-11-06 22:42:08,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:08,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992564768] [2023-11-06 22:42:08,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:08,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:08,755 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:08,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784875679] [2023-11-06 22:42:08,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:08,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:08,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:08,766 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:08,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:42:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:09,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-06 22:42:09,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:10,375 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-06 22:42:10,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:10,837 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:42:11,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:11,215 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:42:11,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:11,531 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:42:11,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:11,837 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-06 22:42:12,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:12,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:12,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:12,446 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 40 [2023-11-06 22:42:12,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:12,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:12,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:12,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:12,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:12,468 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 37 [2023-11-06 22:42:12,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:12,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:12,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:12,673 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 20 [2023-11-06 22:42:12,722 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 77 proven. 284 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-06 22:42:12,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:12,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:12,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992564768] [2023-11-06 22:42:12,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:42:12,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784875679] [2023-11-06 22:42:12,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784875679] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:12,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:42:12,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-06 22:42:12,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323601560] [2023-11-06 22:42:12,954 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:12,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:42:12,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:12,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:42:12,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=326, Unknown=2, NotChecked=0, Total=380 [2023-11-06 22:42:12,960 INFO L87 Difference]: Start difference. First operand 103 states and 148 transitions. Second operand has 16 states, 14 states have (on average 5.214285714285714) internal successors, (73), 15 states have internal predecessors, (73), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-06 22:42:15,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:15,522 INFO L93 Difference]: Finished difference Result 217 states and 306 transitions. [2023-11-06 22:42:15,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:42:15,524 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.214285714285714) internal successors, (73), 15 states have internal predecessors, (73), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) Word has length 127 [2023-11-06 22:42:15,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:15,526 INFO L225 Difference]: With dead ends: 217 [2023-11-06 22:42:15,527 INFO L226 Difference]: Without dead ends: 117 [2023-11-06 22:42:15,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=188, Invalid=866, Unknown=2, NotChecked=0, Total=1056 [2023-11-06 22:42:15,530 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 289 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:15,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 597 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:42:15,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-06 22:42:15,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2023-11-06 22:42:15,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 94 states have (on average 1.3404255319148937) internal successors, (126), 94 states have internal predecessors, (126), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:42:15,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 156 transitions. [2023-11-06 22:42:15,573 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 156 transitions. Word has length 127 [2023-11-06 22:42:15,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:15,574 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 156 transitions. [2023-11-06 22:42:15,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.214285714285714) internal successors, (73), 15 states have internal predecessors, (73), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-06 22:42:15,575 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 156 transitions. [2023-11-06 22:42:15,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-06 22:42:15,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:15,578 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:15,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:15,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:15,788 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:15,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:15,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1866621821, now seen corresponding path program 1 times [2023-11-06 22:42:15,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:15,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080664908] [2023-11-06 22:42:15,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:15,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:15,874 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:15,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21557683] [2023-11-06 22:42:15,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:15,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:15,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:15,876 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:15,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:42:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:16,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-06 22:42:16,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:17,523 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:42:17,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:17,751 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2023-11-06 22:42:17,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:17,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:17,760 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-11-06 22:42:17,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:17,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:17,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:17,939 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2023-11-06 22:42:17,946 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:42:17,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:17,999 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2023-11-06 22:42:18,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:18,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:18,158 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2023-11-06 22:42:18,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:18,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:18,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:18,266 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2023-11-06 22:42:18,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:18,718 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:42:18,718 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 23 [2023-11-06 22:42:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 22:42:18,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:18,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:18,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080664908] [2023-11-06 22:42:18,766 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:42:18,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21557683] [2023-11-06 22:42:18,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21557683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:18,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:18,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 22:42:18,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094335959] [2023-11-06 22:42:18,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:18,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:42:18,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:18,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:42:18,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:42:18,772 INFO L87 Difference]: Start difference. First operand 113 states and 156 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:24,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:24,113 INFO L93 Difference]: Finished difference Result 410 states and 574 transitions. [2023-11-06 22:42:24,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:42:24,116 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 127 [2023-11-06 22:42:24,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:24,120 INFO L225 Difference]: With dead ends: 410 [2023-11-06 22:42:24,120 INFO L226 Difference]: Without dead ends: 300 [2023-11-06 22:42:24,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:42:24,122 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 854 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:24,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1011 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-06 22:42:24,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-06 22:42:24,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 133. [2023-11-06 22:42:24,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 114 states have (on average 1.368421052631579) internal successors, (156), 114 states have internal predecessors, (156), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:42:24,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 186 transitions. [2023-11-06 22:42:24,196 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 186 transitions. Word has length 127 [2023-11-06 22:42:24,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:24,197 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 186 transitions. [2023-11-06 22:42:24,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:24,198 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 186 transitions. [2023-11-06 22:42:24,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-06 22:42:24,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:24,201 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:24,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:24,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:42:24,410 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:24,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:24,410 INFO L85 PathProgramCache]: Analyzing trace with hash 855504571, now seen corresponding path program 1 times [2023-11-06 22:42:24,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:24,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632090372] [2023-11-06 22:42:24,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:24,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:24,481 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:24,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [357342285] [2023-11-06 22:42:24,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:24,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:24,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:24,496 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:24,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:42:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:24,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:42:24,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:25,997 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-11-06 22:42:26,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:26,041 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 13 [2023-11-06 22:42:26,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:26,090 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 13 [2023-11-06 22:42:26,141 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 67 [2023-11-06 22:42:26,147 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 89 [2023-11-06 22:42:26,223 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 57 [2023-11-06 22:42:26,625 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 56 [2023-11-06 22:42:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-11-06 22:42:26,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:26,801 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_806 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_806) |c_~#signed_char_Array_0~0.base|))) (= (select .cse0 (+ 3 |c_~#signed_char_Array_0~0.offset|)) (select .cse0 (+ 2 |c_~#signed_char_Array_0~0.offset|))))) is different from false [2023-11-06 22:42:26,817 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_805 (Array Int Int)) (v_ArrVal_806 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| v_ArrVal_805) |c_~#unsigned_char_Array_0~0.base| v_ArrVal_806) |c_~#signed_char_Array_0~0.base|))) (= (select .cse0 (+ 2 |c_~#signed_char_Array_0~0.offset|)) (select .cse0 (+ 3 |c_~#signed_char_Array_0~0.offset|))))) is different from false [2023-11-06 22:42:26,830 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:42:26,831 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 48 [2023-11-06 22:42:26,838 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:42:26,839 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 70 [2023-11-06 22:42:26,848 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2023-11-06 22:42:26,854 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:42:26,859 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 34 [2023-11-06 22:42:27,131 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 22:42:27,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:27,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632090372] [2023-11-06 22:42:27,132 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:42:27,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357342285] [2023-11-06 22:42:27,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357342285] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:27,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:42:27,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 17 [2023-11-06 22:42:27,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700291243] [2023-11-06 22:42:27,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:27,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:42:27,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:27,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:42:27,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=169, Unknown=2, NotChecked=54, Total=272 [2023-11-06 22:42:27,136 INFO L87 Difference]: Start difference. First operand 133 states and 186 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:27,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:27,777 INFO L93 Difference]: Finished difference Result 346 states and 488 transitions. [2023-11-06 22:42:27,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:42:27,778 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 127 [2023-11-06 22:42:27,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:27,781 INFO L225 Difference]: With dead ends: 346 [2023-11-06 22:42:27,781 INFO L226 Difference]: Without dead ends: 216 [2023-11-06 22:42:27,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=372, Unknown=2, NotChecked=82, Total=552 [2023-11-06 22:42:27,784 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 402 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 505 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:27,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 442 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 305 Invalid, 0 Unknown, 505 Unchecked, 0.4s Time] [2023-11-06 22:42:27,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-06 22:42:27,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 160. [2023-11-06 22:42:27,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 141 states have (on average 1.4113475177304964) internal successors, (199), 141 states have internal predecessors, (199), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:42:27,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 229 transitions. [2023-11-06 22:42:27,807 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 229 transitions. Word has length 127 [2023-11-06 22:42:27,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:27,808 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 229 transitions. [2023-11-06 22:42:27,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:27,808 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 229 transitions. [2023-11-06 22:42:27,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-06 22:42:27,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:27,811 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:27,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:28,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:42:28,019 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:28,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:28,020 INFO L85 PathProgramCache]: Analyzing trace with hash 586758143, now seen corresponding path program 1 times [2023-11-06 22:42:28,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:28,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534307899] [2023-11-06 22:42:28,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:28,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:28,090 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:28,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2069120843] [2023-11-06 22:42:28,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:28,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:28,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:28,093 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:28,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:42:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:28,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:42:28,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:29,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:29,468 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2023-11-06 22:42:29,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:29,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:29,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:29,482 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-11-06 22:42:29,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:29,587 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 22 [2023-11-06 22:42:29,592 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:42:29,637 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-06 22:42:29,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:29,671 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:42:29,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:29,725 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:42:29,772 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-06 22:42:29,790 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 22:42:29,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:29,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:29,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534307899] [2023-11-06 22:42:29,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:42:29,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069120843] [2023-11-06 22:42:29,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069120843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:29,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:29,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:42:29,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006851286] [2023-11-06 22:42:29,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:29,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:42:29,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:29,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:42:29,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:42:29,798 INFO L87 Difference]: Start difference. First operand 160 states and 229 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:30,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:30,650 INFO L93 Difference]: Finished difference Result 406 states and 581 transitions. [2023-11-06 22:42:30,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:42:30,651 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 127 [2023-11-06 22:42:30,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:30,653 INFO L225 Difference]: With dead ends: 406 [2023-11-06 22:42:30,654 INFO L226 Difference]: Without dead ends: 249 [2023-11-06 22:42:30,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:42:30,656 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 309 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:30,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 431 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:42:30,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-11-06 22:42:30,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 181. [2023-11-06 22:42:30,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 162 states have (on average 1.4320987654320987) internal successors, (232), 162 states have internal predecessors, (232), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:42:30,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 262 transitions. [2023-11-06 22:42:30,679 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 262 transitions. Word has length 127 [2023-11-06 22:42:30,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:30,680 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 262 transitions. [2023-11-06 22:42:30,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:30,680 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 262 transitions. [2023-11-06 22:42:30,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-06 22:42:30,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:30,683 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:30,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:30,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:42:30,892 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:30,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:30,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1295109117, now seen corresponding path program 1 times [2023-11-06 22:42:30,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:30,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363892237] [2023-11-06 22:42:30,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:30,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:30,945 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:30,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1312745807] [2023-11-06 22:42:30,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:30,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:30,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:30,947 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:30,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:42:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:31,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:42:31,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:32,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:32,285 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2023-11-06 22:42:32,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:32,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:32,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:32,298 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-11-06 22:42:32,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:32,399 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 20 [2023-11-06 22:42:32,404 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:42:32,449 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-06 22:42:32,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:32,476 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:42:32,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:32,523 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:42:32,564 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-06 22:42:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 22:42:32,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:32,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:32,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363892237] [2023-11-06 22:42:32,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:42:32,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312745807] [2023-11-06 22:42:32,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312745807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:32,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:32,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:42:32,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757228372] [2023-11-06 22:42:32,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:32,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:42:32,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:32,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:42:32,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:42:32,586 INFO L87 Difference]: Start difference. First operand 181 states and 262 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:33,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:33,495 INFO L93 Difference]: Finished difference Result 396 states and 569 transitions. [2023-11-06 22:42:33,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:42:33,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 127 [2023-11-06 22:42:33,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:33,503 INFO L225 Difference]: With dead ends: 396 [2023-11-06 22:42:33,503 INFO L226 Difference]: Without dead ends: 218 [2023-11-06 22:42:33,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:42:33,505 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 217 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:33,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 504 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:42:33,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-11-06 22:42:33,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 181. [2023-11-06 22:42:33,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 162 states have (on average 1.4197530864197532) internal successors, (230), 162 states have internal predecessors, (230), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:42:33,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 260 transitions. [2023-11-06 22:42:33,542 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 260 transitions. Word has length 127 [2023-11-06 22:42:33,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:33,543 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 260 transitions. [2023-11-06 22:42:33,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:33,543 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 260 transitions. [2023-11-06 22:42:33,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-06 22:42:33,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:33,548 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:33,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:33,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:33,755 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:33,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:33,756 INFO L85 PathProgramCache]: Analyzing trace with hash 15245439, now seen corresponding path program 1 times [2023-11-06 22:42:33,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:33,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149529040] [2023-11-06 22:42:33,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:33,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:33,832 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:33,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654505762] [2023-11-06 22:42:33,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:33,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:33,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:33,848 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:33,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:42:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:34,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-06 22:42:34,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:35,073 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-06 22:42:35,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:35,419 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:42:35,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:35,693 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:42:35,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:35,943 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:42:36,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:36,217 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-06 22:42:36,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:36,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:36,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:36,695 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 40 [2023-11-06 22:42:36,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:36,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:36,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:36,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:36,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:36,713 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 37 [2023-11-06 22:42:36,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:36,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:36,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:36,875 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 18 [2023-11-06 22:42:36,911 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 75 proven. 281 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-06 22:42:36,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:37,018 WARN L839 $PredicateComparison]: unable to prove that (forall ((|~#signed_long_int_Array_0~0.offset| Int) (v_ArrVal_1165 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| (store (select |c_#memory_int| |c_~#signed_long_int_Array_0~0.base|) |~#signed_long_int_Array_0~0.offset| (select (select |c_#memory_int| |c_~#signed_char_Array_0~0.base|) (+ |c_~#signed_char_Array_0~0.offset| 1)))) |c_~#signed_short_int_Array_0~0.base| v_ArrVal_1165))) (< (select (select .cse0 |c_~#signed_long_int_Array_0~0.base|) |~#signed_long_int_Array_0~0.offset|) (mod (select (select .cse0 |c_~#unsigned_short_int_Array_0~0.base|) (+ |c_~#unsigned_short_int_Array_0~0.offset| 2)) 65536)))) is different from false [2023-11-06 22:42:37,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:37,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149529040] [2023-11-06 22:42:37,035 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:42:37,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654505762] [2023-11-06 22:42:37,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654505762] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:37,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:42:37,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-06 22:42:37,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286133619] [2023-11-06 22:42:37,036 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:37,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:42:37,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:37,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:42:37,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=294, Unknown=1, NotChecked=34, Total=380 [2023-11-06 22:42:37,039 INFO L87 Difference]: Start difference. First operand 181 states and 260 transitions. Second operand has 16 states, 14 states have (on average 5.214285714285714) internal successors, (73), 15 states have internal predecessors, (73), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-06 22:42:39,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:39,374 INFO L93 Difference]: Finished difference Result 343 states and 485 transitions. [2023-11-06 22:42:39,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:42:39,384 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.214285714285714) internal successors, (73), 15 states have internal predecessors, (73), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) Word has length 127 [2023-11-06 22:42:39,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:39,391 INFO L225 Difference]: With dead ends: 343 [2023-11-06 22:42:39,392 INFO L226 Difference]: Without dead ends: 165 [2023-11-06 22:42:39,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=180, Invalid=815, Unknown=1, NotChecked=60, Total=1056 [2023-11-06 22:42:39,395 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 205 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:39,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 645 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-06 22:42:39,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-11-06 22:42:39,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2023-11-06 22:42:39,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 141 states have (on average 1.3687943262411348) internal successors, (193), 141 states have internal predecessors, (193), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:42:39,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 223 transitions. [2023-11-06 22:42:39,423 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 223 transitions. Word has length 127 [2023-11-06 22:42:39,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:39,424 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 223 transitions. [2023-11-06 22:42:39,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.214285714285714) internal successors, (73), 15 states have internal predecessors, (73), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-06 22:42:39,424 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 223 transitions. [2023-11-06 22:42:39,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-06 22:42:39,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:39,427 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:39,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:39,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:39,635 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:39,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:39,636 INFO L85 PathProgramCache]: Analyzing trace with hash 77285053, now seen corresponding path program 1 times [2023-11-06 22:42:39,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:39,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722471876] [2023-11-06 22:42:39,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:39,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:39,702 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:39,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480886908] [2023-11-06 22:42:39,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:39,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:39,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:39,705 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:39,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:42:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:40,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-06 22:42:40,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:41,194 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:42:41,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:41,385 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2023-11-06 22:42:41,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:41,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:41,395 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-11-06 22:42:41,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:41,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:41,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:41,543 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2023-11-06 22:42:41,552 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:42:41,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:41,616 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2023-11-06 22:42:41,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:41,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:41,748 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2023-11-06 22:42:41,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:41,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:41,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:41,866 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2023-11-06 22:42:42,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:42,249 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:42:42,250 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 21 [2023-11-06 22:42:42,283 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 22:42:42,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:42,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:42,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722471876] [2023-11-06 22:42:42,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:42:42,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480886908] [2023-11-06 22:42:42,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480886908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:42,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:42,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 22:42:42,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406155553] [2023-11-06 22:42:42,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:42,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:42:42,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:42,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:42:42,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:42:42,288 INFO L87 Difference]: Start difference. First operand 161 states and 223 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:45,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:45,692 INFO L93 Difference]: Finished difference Result 453 states and 625 transitions. [2023-11-06 22:42:45,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:42:45,694 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 127 [2023-11-06 22:42:45,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:45,698 INFO L225 Difference]: With dead ends: 453 [2023-11-06 22:42:45,698 INFO L226 Difference]: Without dead ends: 295 [2023-11-06 22:42:45,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:42:45,700 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 458 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:45,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 718 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-06 22:42:45,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-11-06 22:42:45,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 178. [2023-11-06 22:42:45,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 158 states have (on average 1.379746835443038) internal successors, (218), 158 states have internal predecessors, (218), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:42:45,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 248 transitions. [2023-11-06 22:42:45,725 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 248 transitions. Word has length 127 [2023-11-06 22:42:45,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:45,726 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 248 transitions. [2023-11-06 22:42:45,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:45,727 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 248 transitions. [2023-11-06 22:42:45,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-06 22:42:45,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:45,729 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:45,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:45,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:45,938 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:45,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:45,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1726299014, now seen corresponding path program 1 times [2023-11-06 22:42:45,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:45,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876886548] [2023-11-06 22:42:45,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:45,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:45,994 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:45,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1552336803] [2023-11-06 22:42:45,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:45,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:45,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:45,996 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:46,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:42:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:46,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-06 22:42:46,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:47,608 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:42:47,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:47,818 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2023-11-06 22:42:47,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:47,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:47,827 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-11-06 22:42:47,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:47,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:47,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:47,965 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2023-11-06 22:42:47,974 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:42:48,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:48,039 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2023-11-06 22:42:48,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:48,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:48,213 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2023-11-06 22:42:48,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:48,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:48,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:48,302 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2023-11-06 22:42:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 22:42:48,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:48,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:48,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876886548] [2023-11-06 22:42:48,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:42:48,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552336803] [2023-11-06 22:42:48,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552336803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:48,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:48,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:42:48,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725365927] [2023-11-06 22:42:48,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:48,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:42:48,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:48,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:42:48,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:42:48,420 INFO L87 Difference]: Start difference. First operand 178 states and 248 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:50,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:50,353 INFO L93 Difference]: Finished difference Result 447 states and 620 transitions. [2023-11-06 22:42:50,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:42:50,360 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 128 [2023-11-06 22:42:50,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:50,366 INFO L225 Difference]: With dead ends: 447 [2023-11-06 22:42:50,366 INFO L226 Difference]: Without dead ends: 272 [2023-11-06 22:42:50,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:42:50,375 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 380 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:50,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 550 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:42:50,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-11-06 22:42:50,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 191. [2023-11-06 22:42:50,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 171 states have (on average 1.391812865497076) internal successors, (238), 171 states have internal predecessors, (238), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:42:50,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 268 transitions. [2023-11-06 22:42:50,399 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 268 transitions. Word has length 128 [2023-11-06 22:42:50,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:50,400 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 268 transitions. [2023-11-06 22:42:50,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:50,401 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 268 transitions. [2023-11-06 22:42:50,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-06 22:42:50,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:50,403 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:50,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:50,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:50,612 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:50,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:50,612 INFO L85 PathProgramCache]: Analyzing trace with hash 763229948, now seen corresponding path program 1 times [2023-11-06 22:42:50,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:50,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367941965] [2023-11-06 22:42:50,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:50,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:50,661 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:50,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758569485] [2023-11-06 22:42:50,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:50,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:50,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:50,664 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:50,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:42:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:51,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-06 22:42:51,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:52,231 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:42:52,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:52,402 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2023-11-06 22:42:52,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:52,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:52,412 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-11-06 22:42:52,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:52,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:52,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:52,564 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2023-11-06 22:42:52,570 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:42:52,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:52,622 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2023-11-06 22:42:52,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:52,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:52,677 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-11-06 22:42:52,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:52,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:52,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:52,736 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-11-06 22:42:52,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:52,860 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2023-11-06 22:42:52,888 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 22:42:52,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:52,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:52,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367941965] [2023-11-06 22:42:52,889 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:42:52,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758569485] [2023-11-06 22:42:52,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758569485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:52,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:52,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:42:52,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255256088] [2023-11-06 22:42:52,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:52,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:42:52,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:52,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:42:52,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:42:52,892 INFO L87 Difference]: Start difference. First operand 191 states and 268 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:54,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:54,430 INFO L93 Difference]: Finished difference Result 437 states and 610 transitions. [2023-11-06 22:42:54,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:42:54,431 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 128 [2023-11-06 22:42:54,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:54,433 INFO L225 Difference]: With dead ends: 437 [2023-11-06 22:42:54,433 INFO L226 Difference]: Without dead ends: 249 [2023-11-06 22:42:54,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:42:54,435 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 333 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:54,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 567 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:42:54,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-11-06 22:42:54,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 187. [2023-11-06 22:42:54,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 167 states have (on average 1.3952095808383234) internal successors, (233), 167 states have internal predecessors, (233), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:42:54,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 263 transitions. [2023-11-06 22:42:54,460 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 263 transitions. Word has length 128 [2023-11-06 22:42:54,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:54,461 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 263 transitions. [2023-11-06 22:42:54,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:54,461 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 263 transitions. [2023-11-06 22:42:54,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-06 22:42:54,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:54,464 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:54,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:54,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:54,679 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:54,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:54,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1619959298, now seen corresponding path program 1 times [2023-11-06 22:42:54,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:54,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639712908] [2023-11-06 22:42:54,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:54,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:54,755 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:54,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228906745] [2023-11-06 22:42:54,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:54,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:54,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:54,759 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:54,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:42:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:55,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-06 22:42:55,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:56,329 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:42:56,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:56,527 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2023-11-06 22:42:56,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:56,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:56,537 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-11-06 22:42:56,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:56,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:56,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:56,694 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2023-11-06 22:42:56,704 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:42:56,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:56,769 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2023-11-06 22:42:56,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:56,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:56,947 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2023-11-06 22:42:57,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:57,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:57,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:57,036 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2023-11-06 22:42:57,165 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 22:42:57,165 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:57,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:57,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639712908] [2023-11-06 22:42:57,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:42:57,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228906745] [2023-11-06 22:42:57,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228906745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:57,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:57,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:42:57,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063230837] [2023-11-06 22:42:57,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:57,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:42:57,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:57,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:42:57,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:42:57,170 INFO L87 Difference]: Start difference. First operand 187 states and 263 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:59,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:59,335 INFO L93 Difference]: Finished difference Result 461 states and 644 transitions. [2023-11-06 22:42:59,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:42:59,336 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 128 [2023-11-06 22:42:59,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:59,338 INFO L225 Difference]: With dead ends: 461 [2023-11-06 22:42:59,339 INFO L226 Difference]: Without dead ends: 277 [2023-11-06 22:42:59,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:42:59,341 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 289 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:59,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 711 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-06 22:42:59,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-11-06 22:42:59,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 200. [2023-11-06 22:42:59,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 180 states have (on average 1.4055555555555554) internal successors, (253), 180 states have internal predecessors, (253), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:42:59,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 283 transitions. [2023-11-06 22:42:59,381 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 283 transitions. Word has length 128 [2023-11-06 22:42:59,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:59,382 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 283 transitions. [2023-11-06 22:42:59,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:42:59,383 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 283 transitions. [2023-11-06 22:42:59,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-06 22:42:59,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:59,384 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:59,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:59,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:59,593 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:59,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:59,593 INFO L85 PathProgramCache]: Analyzing trace with hash 869569664, now seen corresponding path program 1 times [2023-11-06 22:42:59,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:59,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662473715] [2023-11-06 22:42:59,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:59,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:59,650 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:59,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136798539] [2023-11-06 22:42:59,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:59,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:59,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:59,653 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:59,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 22:42:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:59,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-06 22:43:00,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:01,090 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:43:01,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:01,267 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2023-11-06 22:43:01,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:01,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:01,274 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-11-06 22:43:01,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:01,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:01,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:01,404 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2023-11-06 22:43:01,413 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:43:01,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:01,450 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2023-11-06 22:43:01,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:01,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:01,500 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-11-06 22:43:01,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:01,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:01,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:01,551 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-11-06 22:43:01,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:01,661 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 14 [2023-11-06 22:43:01,683 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 22:43:01,684 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:43:01,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:01,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662473715] [2023-11-06 22:43:01,684 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:01,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136798539] [2023-11-06 22:43:01,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136798539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:01,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:01,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:43:01,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535077947] [2023-11-06 22:43:01,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:01,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:43:01,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:01,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:43:01,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:43:01,688 INFO L87 Difference]: Start difference. First operand 200 states and 283 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:43:03,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:03,127 INFO L93 Difference]: Finished difference Result 428 states and 602 transitions. [2023-11-06 22:43:03,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:43:03,136 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 128 [2023-11-06 22:43:03,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:03,140 INFO L225 Difference]: With dead ends: 428 [2023-11-06 22:43:03,141 INFO L226 Difference]: Without dead ends: 231 [2023-11-06 22:43:03,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:43:03,145 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 284 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:03,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 620 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:43:03,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-11-06 22:43:03,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 192. [2023-11-06 22:43:03,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 172 states have (on average 1.4069767441860466) internal successors, (242), 172 states have internal predecessors, (242), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:43:03,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 272 transitions. [2023-11-06 22:43:03,170 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 272 transitions. Word has length 128 [2023-11-06 22:43:03,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:03,173 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 272 transitions. [2023-11-06 22:43:03,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:43:03,174 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 272 transitions. [2023-11-06 22:43:03,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-06 22:43:03,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:03,176 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:03,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:03,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:03,385 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:03,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:03,385 INFO L85 PathProgramCache]: Analyzing trace with hash -730625546, now seen corresponding path program 1 times [2023-11-06 22:43:03,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:03,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639024038] [2023-11-06 22:43:03,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:03,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:03,445 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:03,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960158460] [2023-11-06 22:43:03,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:03,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:03,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:03,447 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:03,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 22:43:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:03,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:43:03,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:04,726 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-06 22:43:05,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:05,053 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:43:05,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:05,320 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:43:05,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:05,533 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:43:05,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:05,747 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:43:05,972 INFO L322 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-06 22:43:05,972 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 26 [2023-11-06 22:43:05,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:06,004 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-06 22:43:06,005 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2023-11-06 22:43:06,023 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 48 proven. 313 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-06 22:43:06,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:06,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:06,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639024038] [2023-11-06 22:43:06,088 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:06,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960158460] [2023-11-06 22:43:06,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960158460] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:43:06,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:43:06,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-06 22:43:06,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509169079] [2023-11-06 22:43:06,089 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:06,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:43:06,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:06,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:43:06,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:43:06,090 INFO L87 Difference]: Start difference. First operand 192 states and 272 transitions. Second operand has 11 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 6 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2023-11-06 22:43:06,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:06,788 INFO L93 Difference]: Finished difference Result 334 states and 466 transitions. [2023-11-06 22:43:06,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:43:06,788 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 6 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) Word has length 129 [2023-11-06 22:43:06,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:06,789 INFO L225 Difference]: With dead ends: 334 [2023-11-06 22:43:06,790 INFO L226 Difference]: Without dead ends: 145 [2023-11-06 22:43:06,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:43:06,791 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 128 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:06,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 349 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:43:06,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-06 22:43:06,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 141. [2023-11-06 22:43:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 121 states have (on average 1.3388429752066116) internal successors, (162), 121 states have internal predecessors, (162), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:43:06,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 192 transitions. [2023-11-06 22:43:06,811 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 192 transitions. Word has length 129 [2023-11-06 22:43:06,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:06,812 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 192 transitions. [2023-11-06 22:43:06,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 6 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2023-11-06 22:43:06,812 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 192 transitions. [2023-11-06 22:43:06,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-06 22:43:06,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:06,814 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:06,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-06 22:43:07,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:43:07,022 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:07,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:07,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1998626102, now seen corresponding path program 1 times [2023-11-06 22:43:07,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:07,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12733478] [2023-11-06 22:43:07,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:07,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:07,065 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:07,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882318714] [2023-11-06 22:43:07,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:07,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:07,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:07,068 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:07,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-06 22:43:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:07,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-06 22:43:07,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:08,425 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-11-06 22:43:08,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:08,457 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 13 [2023-11-06 22:43:08,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:08,496 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 13 [2023-11-06 22:43:08,535 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 67 [2023-11-06 22:43:08,539 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 89 [2023-11-06 22:43:08,597 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 34 [2023-11-06 22:43:09,141 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 301 treesize of output 149 [2023-11-06 22:43:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-11-06 22:43:09,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 22:43:09,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:09,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12733478] [2023-11-06 22:43:09,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:09,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882318714] [2023-11-06 22:43:09,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882318714] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:43:09,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:43:09,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 21 [2023-11-06 22:43:09,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584397574] [2023-11-06 22:43:09,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:09,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:43:09,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:09,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:43:09,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:43:09,672 INFO L87 Difference]: Start difference. First operand 141 states and 192 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:43:10,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:10,220 INFO L93 Difference]: Finished difference Result 337 states and 455 transitions. [2023-11-06 22:43:10,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:43:10,224 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 129 [2023-11-06 22:43:10,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:10,226 INFO L225 Difference]: With dead ends: 337 [2023-11-06 22:43:10,226 INFO L226 Difference]: Without dead ends: 199 [2023-11-06 22:43:10,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:43:10,228 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 168 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:10,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 790 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:43:10,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-06 22:43:10,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 161. [2023-11-06 22:43:10,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 141 states have (on average 1.326241134751773) internal successors, (187), 141 states have internal predecessors, (187), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:43:10,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 217 transitions. [2023-11-06 22:43:10,249 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 217 transitions. Word has length 129 [2023-11-06 22:43:10,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:10,250 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 217 transitions. [2023-11-06 22:43:10,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:43:10,250 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 217 transitions. [2023-11-06 22:43:10,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-06 22:43:10,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:10,252 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:10,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:10,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:43:10,461 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:10,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:10,462 INFO L85 PathProgramCache]: Analyzing trace with hash -458286672, now seen corresponding path program 1 times [2023-11-06 22:43:10,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:10,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068090735] [2023-11-06 22:43:10,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:10,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:10,523 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:10,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409914118] [2023-11-06 22:43:10,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:10,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:10,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:10,525 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:10,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-06 22:43:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:10,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-06 22:43:10,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:11,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:11,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:11,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:11,863 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 50 [2023-11-06 22:43:12,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:12,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:12,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:12,034 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 57 [2023-11-06 22:43:12,052 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:43:12,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:12,116 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 49 [2023-11-06 22:43:12,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:12,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:12,276 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:43:12,276 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 61 [2023-11-06 22:43:12,302 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2023-11-06 22:43:12,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:12,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:12,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:12,542 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 104 [2023-11-06 22:43:14,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:14,131 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:43:14,132 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 225 treesize of output 115 [2023-11-06 22:43:14,202 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-11-06 22:43:14,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:14,772 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 4 |c_~#signed_long_int_Array_0~0.offset|))) (and (forall ((v_ArrVal_2124 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2124))) (let ((.cse2 (select .cse4 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse1 (mod (select .cse2 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse0 (select (select .cse4 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (= (+ 65536 .cse0) .cse1) (= .cse1 .cse0) (not (= (select .cse2 .cse3) .cse0))))))) (forall ((v_ArrVal_2124 (Array Int Int))) (let ((.cse8 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2124))) (let ((.cse7 (select .cse8 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse5 (mod (select .cse7 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse6 (select (select .cse8 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (< .cse5 32768) (= (+ 65536 .cse6) .cse5) (not (= (select .cse7 .cse3) .cse6))))))) (forall ((v_ArrVal_2124 (Array Int Int))) (let ((.cse12 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2124))) (let ((.cse11 (select .cse12 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse9 (mod (select .cse11 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse10 (select (select .cse12 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (< 32767 .cse9) (= .cse9 .cse10) (not (= (select .cse11 .cse3) .cse10))))))))) is different from false [2023-11-06 22:43:14,865 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 4 |c_~#signed_long_int_Array_0~0.offset|))) (and (forall ((v_ArrVal_2124 (Array Int Int)) (v_ArrVal_2123 (Array Int Int))) (let ((.cse4 (store (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2123) |c_~#signed_char_Array_0~0.base| v_ArrVal_2124))) (let ((.cse2 (select .cse4 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse0 (mod (select .cse2 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse1 (select (select .cse4 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (< 32767 .cse0) (= .cse0 .cse1) (not (= (select .cse2 .cse3) .cse1))))))) (forall ((v_ArrVal_2124 (Array Int Int)) (v_ArrVal_2123 (Array Int Int))) (let ((.cse8 (store (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2123) |c_~#signed_char_Array_0~0.base| v_ArrVal_2124))) (let ((.cse7 (select .cse8 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse5 (mod (select .cse7 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse6 (select (select .cse8 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (= .cse5 (+ 65536 .cse6)) (= .cse5 .cse6) (not (= (select .cse7 .cse3) .cse6))))))) (forall ((v_ArrVal_2124 (Array Int Int)) (v_ArrVal_2123 (Array Int Int))) (let ((.cse12 (store (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2123) |c_~#signed_char_Array_0~0.base| v_ArrVal_2124))) (let ((.cse11 (select .cse12 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse9 (mod (select .cse11 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse10 (select (select .cse12 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (= .cse9 (+ 65536 .cse10)) (< .cse9 32768) (not (= (select .cse11 .cse3) .cse10))))))))) is different from false [2023-11-06 22:43:15,002 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 4 |c_~#signed_long_int_Array_0~0.offset|))) (let ((.cse5 (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| (store (select |c_#memory_int| |c_~#signed_long_int_Array_0~0.base|) .cse3 (select (select |c_#memory_int| |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))))) (and (forall ((v_ArrVal_2124 (Array Int Int)) (v_ArrVal_2123 (Array Int Int))) (let ((.cse4 (store (store .cse5 |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2123) |c_~#signed_char_Array_0~0.base| v_ArrVal_2124))) (let ((.cse2 (select .cse4 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse1 (select (select .cse4 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|)) (.cse0 (mod (select .cse2 |c_~#signed_long_int_Array_0~0.offset|) 65536))) (or (< 32767 .cse0) (not (= .cse1 (select .cse2 .cse3))) (= .cse1 .cse0)))))) (forall ((v_ArrVal_2124 (Array Int Int)) (v_ArrVal_2123 (Array Int Int))) (let ((.cse9 (store (store .cse5 |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2123) |c_~#signed_char_Array_0~0.base| v_ArrVal_2124))) (let ((.cse8 (select .cse9 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse7 (select (select .cse9 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|)) (.cse6 (mod (select .cse8 |c_~#signed_long_int_Array_0~0.offset|) 65536))) (or (< .cse6 32768) (not (= .cse7 (select .cse8 .cse3))) (= (+ 65536 .cse7) .cse6)))))) (forall ((v_ArrVal_2124 (Array Int Int)) (v_ArrVal_2123 (Array Int Int))) (let ((.cse13 (store (store .cse5 |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2123) |c_~#signed_char_Array_0~0.base| v_ArrVal_2124))) (let ((.cse11 (select .cse13 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse10 (select (select .cse13 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|)) (.cse12 (mod (select .cse11 |c_~#signed_long_int_Array_0~0.offset|) 65536))) (or (not (= .cse10 (select .cse11 .cse3))) (= .cse10 .cse12) (= (+ 65536 .cse10) .cse12))))))))) is different from false [2023-11-06 22:43:15,088 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 4 |c_~#signed_long_int_Array_0~0.offset|))) (and (forall ((v_ArrVal_2124 (Array Int Int)) (v_ArrVal_2123 (Array Int Int)) (v_ArrVal_2120 (Array Int Int))) (let ((.cse4 (store (store (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| (let ((.cse5 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2120))) (store (select .cse5 |c_~#signed_long_int_Array_0~0.base|) .cse3 (select (select .cse5 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|)))) |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2123) |c_~#signed_char_Array_0~0.base| v_ArrVal_2124))) (let ((.cse2 (select .cse4 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse1 (select (select .cse4 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|)) (.cse0 (mod (select .cse2 |c_~#signed_long_int_Array_0~0.offset|) 65536))) (or (= .cse0 .cse1) (not (= .cse1 (select .cse2 .cse3))) (< 32767 .cse0)))))) (forall ((v_ArrVal_2124 (Array Int Int)) (v_ArrVal_2123 (Array Int Int)) (v_ArrVal_2120 (Array Int Int))) (let ((.cse9 (store (store (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| (let ((.cse10 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2120))) (store (select .cse10 |c_~#signed_long_int_Array_0~0.base|) .cse3 (select (select .cse10 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|)))) |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2123) |c_~#signed_char_Array_0~0.base| v_ArrVal_2124))) (let ((.cse8 (select .cse9 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse6 (mod (select .cse8 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse7 (select (select .cse9 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (= .cse6 .cse7) (= (+ 65536 .cse7) .cse6) (not (= .cse7 (select .cse8 .cse3)))))))) (forall ((v_ArrVal_2124 (Array Int Int)) (v_ArrVal_2123 (Array Int Int)) (v_ArrVal_2120 (Array Int Int))) (let ((.cse14 (store (store (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| (let ((.cse15 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2120))) (store (select .cse15 |c_~#signed_long_int_Array_0~0.base|) .cse3 (select (select .cse15 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|)))) |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2123) |c_~#signed_char_Array_0~0.base| v_ArrVal_2124))) (let ((.cse13 (select .cse14 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse12 (mod (select .cse13 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse11 (select (select .cse14 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (= (+ 65536 .cse11) .cse12) (< .cse12 32768) (not (= .cse11 (select .cse13 .cse3)))))))))) is different from false [2023-11-06 22:43:15,554 INFO L322 Elim1Store]: treesize reduction 75, result has 39.5 percent of original size [2023-11-06 22:43:15,557 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 73663 treesize of output 41323 [2023-11-06 22:43:16,219 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:43:16,221 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 8355 treesize of output 7959 [2023-11-06 22:43:16,758 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:43:16,759 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 4630 treesize of output 4537 [2023-11-06 22:43:16,977 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4620 treesize of output 4600 [2023-11-06 22:43:17,218 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:43:17,219 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 4600 treesize of output 4379 [2023-11-06 22:43:17,478 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:43:17,479 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 4360 treesize of output 4215 [2023-11-06 22:43:17,715 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4250 treesize of output 4234 [2023-11-06 22:43:17,975 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:43:17,977 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 4234 treesize of output 4171 [2023-11-06 22:43:18,178 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:43:18,179 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 4152 treesize of output 4007 [2023-11-06 22:43:18,379 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4046 treesize of output 4030 [2023-11-06 22:43:18,570 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:43:18,572 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 4030 treesize of output 3967 [2023-11-06 22:43:46,285 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-11-06 22:43:50,249 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-06 22:43:50,255 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 22:43:50,346 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:43:50,346 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 106 [2023-11-06 22:43:50,791 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 22:43:50,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:50,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068090735] [2023-11-06 22:43:50,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:50,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409914118] [2023-11-06 22:43:50,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409914118] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:43:50,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:43:50,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 25 [2023-11-06 22:43:50,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985751440] [2023-11-06 22:43:50,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:50,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:43:50,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:50,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:43:50,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=350, Unknown=4, NotChecked=164, Total=600 [2023-11-06 22:43:50,797 INFO L87 Difference]: Start difference. First operand 161 states and 217 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:43:55,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:55,452 INFO L93 Difference]: Finished difference Result 302 states and 412 transitions. [2023-11-06 22:43:55,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:43:55,452 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 129 [2023-11-06 22:43:55,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:55,455 INFO L225 Difference]: With dead ends: 302 [2023-11-06 22:43:55,456 INFO L226 Difference]: Without dead ends: 300 [2023-11-06 22:43:55,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 233 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=261, Invalid=1156, Unknown=5, NotChecked=300, Total=1722 [2023-11-06 22:43:55,458 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 323 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 37 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 2065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 1240 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:55,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 652 Invalid, 2065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 766 Invalid, 22 Unknown, 1240 Unchecked, 1.5s Time] [2023-11-06 22:43:55,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-06 22:43:55,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 202. [2023-11-06 22:43:55,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 182 states have (on average 1.3186813186813187) internal successors, (240), 182 states have internal predecessors, (240), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:43:55,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 270 transitions. [2023-11-06 22:43:55,486 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 270 transitions. Word has length 129 [2023-11-06 22:43:55,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:55,486 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 270 transitions. [2023-11-06 22:43:55,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:43:55,487 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 270 transitions. [2023-11-06 22:43:55,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-06 22:43:55,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:55,490 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:55,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:55,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:43:55,698 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:55,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:55,699 INFO L85 PathProgramCache]: Analyzing trace with hash -456439630, now seen corresponding path program 1 times [2023-11-06 22:43:55,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:55,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478178909] [2023-11-06 22:43:55,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:55,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:55,742 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:55,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [884339896] [2023-11-06 22:43:55,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:55,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:55,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:55,745 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:55,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-06 22:43:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:56,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:43:56,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:57,231 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-06 22:43:57,238 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-11-06 22:43:57,276 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:43:57,283 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2023-11-06 22:43:57,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:57,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:57,343 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-11-06 22:43:57,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:57,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:57,405 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-11-06 22:43:57,572 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 22:43:57,572 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:43:57,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:57,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478178909] [2023-11-06 22:43:57,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:57,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884339896] [2023-11-06 22:43:57,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884339896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:57,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:57,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:43:57,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629772478] [2023-11-06 22:43:57,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:57,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:43:57,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:57,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:43:57,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:43:57,576 INFO L87 Difference]: Start difference. First operand 202 states and 270 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:43:58,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:58,035 INFO L93 Difference]: Finished difference Result 404 states and 540 transitions. [2023-11-06 22:43:58,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:43:58,036 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 129 [2023-11-06 22:43:58,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:58,039 INFO L225 Difference]: With dead ends: 404 [2023-11-06 22:43:58,039 INFO L226 Difference]: Without dead ends: 205 [2023-11-06 22:43:58,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:43:58,040 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 78 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:58,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 302 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:43:58,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-11-06 22:43:58,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 202. [2023-11-06 22:43:58,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 182 states have (on average 1.3076923076923077) internal successors, (238), 182 states have internal predecessors, (238), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:43:58,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 268 transitions. [2023-11-06 22:43:58,071 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 268 transitions. Word has length 129 [2023-11-06 22:43:58,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:58,072 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 268 transitions. [2023-11-06 22:43:58,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:43:58,072 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 268 transitions. [2023-11-06 22:43:58,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-06 22:43:58,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:58,077 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:58,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:58,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:58,284 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:58,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:58,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1318567732, now seen corresponding path program 1 times [2023-11-06 22:43:58,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:58,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631094253] [2023-11-06 22:43:58,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:58,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:58,333 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:58,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113137736] [2023-11-06 22:43:58,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:58,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:58,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:58,335 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:58,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-06 22:43:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:58,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:43:58,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:00,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:00,046 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 23 [2023-11-06 22:44:00,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:00,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:00,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:00,057 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-06 22:44:00,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:00,122 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 32 [2023-11-06 22:44:00,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:00,178 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2023-11-06 22:44:00,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:00,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:00,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:00,226 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 25 [2023-11-06 22:44:00,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:00,291 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 79 [2023-11-06 22:44:00,297 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 96 [2023-11-06 22:44:00,343 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 38 [2023-11-06 22:44:01,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:01,195 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 59 [2023-11-06 22:44:01,231 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 22:44:01,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:01,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:01,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631094253] [2023-11-06 22:44:01,232 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:01,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113137736] [2023-11-06 22:44:01,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113137736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:01,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:01,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:44:01,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532759205] [2023-11-06 22:44:01,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:01,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:44:01,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:01,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:44:01,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:44:01,234 INFO L87 Difference]: Start difference. First operand 202 states and 268 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:44:02,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:02,052 INFO L93 Difference]: Finished difference Result 454 states and 600 transitions. [2023-11-06 22:44:02,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:44:02,052 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 129 [2023-11-06 22:44:02,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:02,055 INFO L225 Difference]: With dead ends: 454 [2023-11-06 22:44:02,055 INFO L226 Difference]: Without dead ends: 255 [2023-11-06 22:44:02,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:44:02,057 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 511 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:02,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 348 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:44:02,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-11-06 22:44:02,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 202. [2023-11-06 22:44:02,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 182 states have (on average 1.2967032967032968) internal successors, (236), 182 states have internal predecessors, (236), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:44:02,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 266 transitions. [2023-11-06 22:44:02,088 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 266 transitions. Word has length 129 [2023-11-06 22:44:02,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:02,089 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 266 transitions. [2023-11-06 22:44:02,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:44:02,090 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 266 transitions. [2023-11-06 22:44:02,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-06 22:44:02,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:02,092 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:02,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:02,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:02,301 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:02,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:02,301 INFO L85 PathProgramCache]: Analyzing trace with hash 718013107, now seen corresponding path program 1 times [2023-11-06 22:44:02,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:02,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018204262] [2023-11-06 22:44:02,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:02,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:02,343 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:02,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214513826] [2023-11-06 22:44:02,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:02,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:02,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:02,345 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:02,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-06 22:44:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:02,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-06 22:44:02,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:03,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:03,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:03,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:03,818 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 50 [2023-11-06 22:44:03,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:03,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:03,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:03,985 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 57 [2023-11-06 22:44:03,991 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:44:04,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:04,076 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 49 [2023-11-06 22:44:04,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:04,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:04,289 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:44:04,290 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 65 [2023-11-06 22:44:04,311 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-11-06 22:44:04,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:04,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:04,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:04,464 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 65 [2023-11-06 22:44:05,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:05,362 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:44:05,362 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 86 [2023-11-06 22:44:05,430 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-11-06 22:44:05,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:06,353 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 4 |c_~#signed_long_int_Array_0~0.offset|))) (and (forall ((v_ArrVal_2483 (Array Int Int)) (v_ArrVal_2482 (Array Int Int))) (let ((.cse4 (store (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2482) |c_~#signed_char_Array_0~0.base| v_ArrVal_2483))) (let ((.cse2 (select .cse4 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse0 (select (select .cse4 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|)) (.cse1 (mod (select .cse2 |c_~#signed_long_int_Array_0~0.offset|) 65536))) (or (= .cse0 .cse1) (not (= .cse0 (select .cse2 .cse3))) (< 32767 .cse1)))))) (forall ((v_ArrVal_2483 (Array Int Int)) (v_ArrVal_2482 (Array Int Int))) (let ((.cse8 (store (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2482) |c_~#signed_char_Array_0~0.base| v_ArrVal_2483))) (let ((.cse6 (select .cse8 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse7 (mod (select .cse6 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse5 (select (select .cse8 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (not (= .cse5 (select .cse6 .cse3))) (< .cse7 32768) (= .cse7 (+ .cse5 65536))))))) (forall ((v_ArrVal_2483 (Array Int Int)) (v_ArrVal_2482 (Array Int Int))) (let ((.cse12 (store (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2482) |c_~#signed_char_Array_0~0.base| v_ArrVal_2483))) (let ((.cse11 (select .cse12 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse10 (mod (select .cse11 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse9 (select (select .cse12 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (= .cse9 .cse10) (not (= .cse9 (select .cse11 .cse3))) (= .cse10 (+ .cse9 65536))))))))) is different from false [2023-11-06 22:44:06,534 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 4 |c_~#signed_long_int_Array_0~0.offset|))) (let ((.cse5 (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| (store (select |c_#memory_int| |c_~#signed_long_int_Array_0~0.base|) .cse3 (select (select |c_#memory_int| |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))))) (and (forall ((v_ArrVal_2483 (Array Int Int)) (v_ArrVal_2482 (Array Int Int))) (let ((.cse4 (store (store .cse5 |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2482) |c_~#signed_char_Array_0~0.base| v_ArrVal_2483))) (let ((.cse2 (select .cse4 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse1 (select (select .cse4 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|)) (.cse0 (mod (select .cse2 |c_~#signed_long_int_Array_0~0.offset|) 65536))) (or (< 32767 .cse0) (not (= .cse1 (select .cse2 .cse3))) (= .cse1 .cse0)))))) (forall ((v_ArrVal_2483 (Array Int Int)) (v_ArrVal_2482 (Array Int Int))) (let ((.cse9 (store (store .cse5 |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2482) |c_~#signed_char_Array_0~0.base| v_ArrVal_2483))) (let ((.cse7 (select .cse9 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse8 (mod (select .cse7 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse6 (select (select .cse9 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (not (= .cse6 (select .cse7 .cse3))) (= .cse6 .cse8) (= .cse8 (+ 65536 .cse6))))))) (forall ((v_ArrVal_2483 (Array Int Int)) (v_ArrVal_2482 (Array Int Int))) (let ((.cse13 (store (store .cse5 |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2482) |c_~#signed_char_Array_0~0.base| v_ArrVal_2483))) (let ((.cse11 (select .cse13 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse12 (mod (select .cse11 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse10 (select (select .cse13 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (not (= .cse10 (select .cse11 .cse3))) (< .cse12 32768) (= .cse12 (+ 65536 .cse10)))))))))) is different from false [2023-11-06 22:44:06,639 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 4 |c_~#signed_long_int_Array_0~0.offset|))) (and (forall ((v_ArrVal_2479 (Array Int Int)) (v_ArrVal_2483 (Array Int Int)) (v_ArrVal_2482 (Array Int Int))) (let ((.cse4 (store (store (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| (let ((.cse5 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2479))) (store (select .cse5 |c_~#signed_long_int_Array_0~0.base|) .cse3 (select (select .cse5 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|)))) |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2482) |c_~#signed_char_Array_0~0.base| v_ArrVal_2483))) (let ((.cse2 (select .cse4 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse1 (mod (select .cse2 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse0 (select (select .cse4 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (= .cse0 .cse1) (= (+ 65536 .cse0) .cse1) (not (= .cse0 (select .cse2 .cse3)))))))) (forall ((v_ArrVal_2479 (Array Int Int)) (v_ArrVal_2483 (Array Int Int)) (v_ArrVal_2482 (Array Int Int))) (let ((.cse9 (store (store (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| (let ((.cse10 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2479))) (store (select .cse10 |c_~#signed_long_int_Array_0~0.base|) .cse3 (select (select .cse10 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|)))) |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2482) |c_~#signed_char_Array_0~0.base| v_ArrVal_2483))) (let ((.cse8 (select .cse9 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse6 (select (select .cse9 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|)) (.cse7 (mod (select .cse8 |c_~#signed_long_int_Array_0~0.offset|) 65536))) (or (= (+ 65536 .cse6) .cse7) (not (= .cse6 (select .cse8 .cse3))) (< .cse7 32768)))))) (forall ((v_ArrVal_2479 (Array Int Int)) (v_ArrVal_2483 (Array Int Int)) (v_ArrVal_2482 (Array Int Int))) (let ((.cse14 (store (store (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| (let ((.cse15 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2479))) (store (select .cse15 |c_~#signed_long_int_Array_0~0.base|) .cse3 (select (select .cse15 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|)))) |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2482) |c_~#signed_char_Array_0~0.base| v_ArrVal_2483))) (let ((.cse13 (select .cse14 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse12 (mod (select .cse13 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse11 (select (select .cse14 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (= .cse11 .cse12) (< 32767 .cse12) (not (= .cse11 (select .cse13 .cse3)))))))))) is different from false [2023-11-06 22:44:07,123 INFO L322 Elim1Store]: treesize reduction 75, result has 39.5 percent of original size [2023-11-06 22:44:07,126 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 79279 treesize of output 44635 [2023-11-06 22:44:07,731 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:44:07,733 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 8355 treesize of output 7959 [2023-11-06 22:44:08,123 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:44:08,125 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 4630 treesize of output 4567 [2023-11-06 22:44:08,315 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:44:08,316 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 4548 treesize of output 4403 [2023-11-06 22:44:08,468 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4442 treesize of output 4426 [2023-11-06 22:44:08,728 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:44:08,729 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 4426 treesize of output 4363 [2023-11-06 22:44:08,961 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:44:08,962 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 4344 treesize of output 4199 [2023-11-06 22:44:09,129 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4234 treesize of output 4218 [2023-11-06 22:44:09,337 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:44:09,338 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 4218 treesize of output 4125 [2023-11-06 22:44:09,489 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4208 treesize of output 4188 [2023-11-06 22:44:09,697 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:44:09,699 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 4188 treesize of output 3967 [2023-11-06 22:44:30,861 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-11-06 22:44:37,055 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 22:44:37,064 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-06 22:44:37,094 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 22:44:37,104 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-06 22:44:37,289 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:44:37,289 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 77 treesize of output 155 [2023-11-06 22:44:37,812 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 22:44:37,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:37,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018204262] [2023-11-06 22:44:37,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:37,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214513826] [2023-11-06 22:44:37,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214513826] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:37,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:44:37,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 25 [2023-11-06 22:44:37,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127788557] [2023-11-06 22:44:37,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:37,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:44:37,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:37,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:44:37,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=375, Unknown=13, NotChecked=126, Total=600 [2023-11-06 22:44:37,816 INFO L87 Difference]: Start difference. First operand 202 states and 266 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:44:42,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:42,166 INFO L93 Difference]: Finished difference Result 373 states and 507 transitions. [2023-11-06 22:44:42,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:44:42,172 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 130 [2023-11-06 22:44:42,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:42,175 INFO L225 Difference]: With dead ends: 373 [2023-11-06 22:44:42,175 INFO L226 Difference]: Without dead ends: 371 [2023-11-06 22:44:42,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 235 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=277, Invalid=1201, Unknown=16, NotChecked=228, Total=1722 [2023-11-06 22:44:42,176 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 324 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 38 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 940 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:42,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 870 Invalid, 2199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1201 Invalid, 20 Unknown, 940 Unchecked, 2.0s Time] [2023-11-06 22:44:42,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-06 22:44:42,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 220. [2023-11-06 22:44:42,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 200 states have (on average 1.33) internal successors, (266), 200 states have internal predecessors, (266), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:44:42,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 296 transitions. [2023-11-06 22:44:42,206 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 296 transitions. Word has length 130 [2023-11-06 22:44:42,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:42,206 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 296 transitions. [2023-11-06 22:44:42,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:44:42,207 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 296 transitions. [2023-11-06 22:44:42,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-06 22:44:42,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:42,209 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:42,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:42,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:42,411 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:42,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:42,412 INFO L85 PathProgramCache]: Analyzing trace with hash -856462635, now seen corresponding path program 1 times [2023-11-06 22:44:42,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:42,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364226774] [2023-11-06 22:44:42,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:42,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:42,446 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:42,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1707921757] [2023-11-06 22:44:42,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:42,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:42,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:42,448 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:42,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-06 22:44:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:44:42,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:43,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:43,994 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 23 [2023-11-06 22:44:44,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:44,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:44,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:44,004 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-06 22:44:44,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:44,080 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 32 [2023-11-06 22:44:44,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:44,122 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2023-11-06 22:44:44,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:44,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:44,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:44,164 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 25 [2023-11-06 22:44:44,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:44,211 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2023-11-06 22:44:44,224 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 22:44:44,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:44,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:44,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364226774] [2023-11-06 22:44:44,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:44,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707921757] [2023-11-06 22:44:44,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707921757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:44,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:44,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:44:44,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664198173] [2023-11-06 22:44:44,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:44,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:44:44,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:44,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:44:44,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:44:44,227 INFO L87 Difference]: Start difference. First operand 220 states and 296 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:44:44,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:44,607 INFO L93 Difference]: Finished difference Result 439 states and 591 transitions. [2023-11-06 22:44:44,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:44:44,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 131 [2023-11-06 22:44:44,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:44,610 INFO L225 Difference]: With dead ends: 439 [2023-11-06 22:44:44,611 INFO L226 Difference]: Without dead ends: 222 [2023-11-06 22:44:44,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:44:44,612 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 218 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:44,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 215 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:44:44,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-11-06 22:44:44,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2023-11-06 22:44:44,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 200 states have (on average 1.31) internal successors, (262), 200 states have internal predecessors, (262), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:44:44,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 292 transitions. [2023-11-06 22:44:44,638 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 292 transitions. Word has length 131 [2023-11-06 22:44:44,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:44,638 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 292 transitions. [2023-11-06 22:44:44,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:44:44,638 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 292 transitions. [2023-11-06 22:44:44,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-06 22:44:44,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:44,639 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:44,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:44,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-06 22:44:44,843 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:44,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:44,844 INFO L85 PathProgramCache]: Analyzing trace with hash -990476141, now seen corresponding path program 1 times [2023-11-06 22:44:44,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:44,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810185873] [2023-11-06 22:44:44,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:44,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:44,878 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:44,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1118013805] [2023-11-06 22:44:44,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:44,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:44,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:44,880 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:44,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-06 22:44:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-06 22:44:45,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:46,247 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:44:46,799 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-11-06 22:44:47,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:47,143 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-11-06 22:44:47,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:47,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:47,731 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2023-11-06 22:44:48,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:48,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:48,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:48,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:48,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:48,556 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2023-11-06 22:44:49,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:49,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:49,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:49,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:49,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:49,118 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2023-11-06 22:44:49,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:49,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:49,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:49,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:49,727 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40 [2023-11-06 22:44:49,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:49,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:49,893 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 52 [2023-11-06 22:44:50,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:50,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:50,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:50,024 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 47 [2023-11-06 22:44:50,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:50,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:44:50,160 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 62 [2023-11-06 22:44:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 221 proven. 143 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-06 22:44:50,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:53,919 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2710 (Array Int Int))) (let ((.cse2 (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| (let ((.cse4 (select |c_#memory_int| |c_~#signed_char_Array_0~0.base|))) (store .cse4 (+ 3 |c_~#signed_char_Array_0~0.offset|) (select .cse4 (+ 2 |c_~#signed_char_Array_0~0.offset|))))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2710))) (let ((.cse3 (select .cse2 |c_~#unsigned_char_Array_0~0.base|))) (let ((.cse0 (select .cse3 |c_~#unsigned_char_Array_0~0.offset|))) (< (mod .cse0 256) (mod (let ((.cse1 (store .cse2 |c_~#unsigned_char_Array_0~0.base| (store .cse3 (+ |c_~#unsigned_char_Array_0~0.offset| 1) .cse0)))) (+ (select (select .cse1 |c_~#unsigned_long_int_Array_0~0.base|) |c_~#unsigned_long_int_Array_0~0.offset|) (* (select (select .cse1 |c_~#signed_char_Array_0~0.base|) (+ |c_~#signed_char_Array_0~0.offset| 1)) 4294967295))) 4294967296)))))) is different from false [2023-11-06 22:44:56,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:56,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810185873] [2023-11-06 22:44:56,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:56,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118013805] [2023-11-06 22:44:56,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118013805] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:56,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:44:56,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2023-11-06 22:44:56,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271084957] [2023-11-06 22:44:56,816 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:56,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:44:56,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:56,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:44:56,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=769, Unknown=24, NotChecked=58, Total=992 [2023-11-06 22:44:56,818 INFO L87 Difference]: Start difference. First operand 220 states and 292 transitions. Second operand has 24 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 21 states have internal predecessors, (77), 7 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-06 22:44:59,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:59,464 INFO L93 Difference]: Finished difference Result 455 states and 596 transitions. [2023-11-06 22:44:59,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-06 22:44:59,465 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 21 states have internal predecessors, (77), 7 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) Word has length 131 [2023-11-06 22:44:59,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:59,466 INFO L225 Difference]: With dead ends: 455 [2023-11-06 22:44:59,466 INFO L226 Difference]: Without dead ends: 238 [2023-11-06 22:44:59,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=361, Invalid=1597, Unknown=26, NotChecked=86, Total=2070 [2023-11-06 22:44:59,468 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 294 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:59,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 661 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:44:59,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-06 22:44:59,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 232. [2023-11-06 22:44:59,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 209 states have (on average 1.277511961722488) internal successors, (267), 209 states have internal predecessors, (267), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:44:59,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 297 transitions. [2023-11-06 22:44:59,500 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 297 transitions. Word has length 131 [2023-11-06 22:44:59,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:59,500 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 297 transitions. [2023-11-06 22:44:59,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 21 states have internal predecessors, (77), 7 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-06 22:44:59,501 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 297 transitions. [2023-11-06 22:44:59,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-06 22:44:59,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:59,502 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:59,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:59,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-06 22:44:59,711 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:59,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:59,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1456848983, now seen corresponding path program 1 times [2023-11-06 22:44:59,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:59,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161328148] [2023-11-06 22:44:59,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:59,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:59,758 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:59,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978045299] [2023-11-06 22:44:59,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:59,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:59,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:59,760 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:59,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-06 22:45:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:00,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-06 22:45:00,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:01,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:01,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:01,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:01,097 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 50 [2023-11-06 22:45:01,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:01,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:01,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:01,251 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 57 [2023-11-06 22:45:01,257 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:45:01,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:01,331 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 49 [2023-11-06 22:45:01,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:01,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:01,551 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:45:01,551 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 61 [2023-11-06 22:45:01,586 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2023-11-06 22:45:01,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:01,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:01,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:01,758 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 104 [2023-11-06 22:45:03,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:03,083 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:45:03,083 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 225 treesize of output 115 [2023-11-06 22:45:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-11-06 22:45:03,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:45:03,719 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 4 |c_~#signed_long_int_Array_0~0.offset|))) (and (forall ((v_ArrVal_2831 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2831))) (let ((.cse0 (select .cse4 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse2 (select (select .cse4 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|)) (.cse3 (mod (select .cse0 |c_~#signed_long_int_Array_0~0.offset|) 65536))) (or (not (= (select .cse0 .cse1) .cse2)) (< .cse3 32768) (= (+ .cse2 65536) .cse3)))))) (forall ((v_ArrVal_2831 (Array Int Int))) (let ((.cse8 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2831))) (let ((.cse7 (select .cse8 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse5 (select (select .cse8 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|)) (.cse6 (mod (select .cse7 |c_~#signed_long_int_Array_0~0.offset|) 65536))) (or (= .cse5 .cse6) (not (= (select .cse7 .cse1) .cse5)) (= (+ .cse5 65536) .cse6)))))) (forall ((v_ArrVal_2831 (Array Int Int))) (let ((.cse12 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2831))) (let ((.cse11 (select .cse12 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse9 (select (select .cse12 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|)) (.cse10 (mod (select .cse11 |c_~#signed_long_int_Array_0~0.offset|) 65536))) (or (= .cse9 .cse10) (not (= (select .cse11 .cse1) .cse9)) (< 32767 .cse10)))))))) is different from false [2023-11-06 22:45:03,806 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 4 |c_~#signed_long_int_Array_0~0.offset|))) (and (forall ((v_ArrVal_2831 (Array Int Int)) (v_ArrVal_2830 (Array Int Int))) (let ((.cse4 (store (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2830) |c_~#signed_char_Array_0~0.base| v_ArrVal_2831))) (let ((.cse2 (select .cse4 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse0 (mod (select .cse2 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse1 (select (select .cse4 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (< 32767 .cse0) (= .cse0 .cse1) (not (= .cse1 (select .cse2 .cse3)))))))) (forall ((v_ArrVal_2831 (Array Int Int)) (v_ArrVal_2830 (Array Int Int))) (let ((.cse8 (store (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2830) |c_~#signed_char_Array_0~0.base| v_ArrVal_2831))) (let ((.cse7 (select .cse8 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse5 (mod (select .cse7 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse6 (select (select .cse8 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (= .cse5 (+ 65536 .cse6)) (= .cse5 .cse6) (not (= .cse6 (select .cse7 .cse3)))))))) (forall ((v_ArrVal_2831 (Array Int Int)) (v_ArrVal_2830 (Array Int Int))) (let ((.cse12 (store (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2830) |c_~#signed_char_Array_0~0.base| v_ArrVal_2831))) (let ((.cse11 (select .cse12 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse9 (mod (select .cse11 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse10 (select (select .cse12 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (< .cse9 32768) (= .cse9 (+ 65536 .cse10)) (not (= .cse10 (select .cse11 .cse3)))))))))) is different from false [2023-11-06 22:45:04,004 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 4 |c_~#signed_long_int_Array_0~0.offset|))) (let ((.cse5 (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| (store (select |c_#memory_int| |c_~#signed_long_int_Array_0~0.base|) .cse2 (select (select |c_#memory_int| |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))))) (and (forall ((v_ArrVal_2831 (Array Int Int)) (v_ArrVal_2830 (Array Int Int))) (let ((.cse4 (store (store .cse5 |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2830) |c_~#signed_char_Array_0~0.base| v_ArrVal_2831))) (let ((.cse1 (select .cse4 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse3 (mod (select .cse1 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse0 (select (select .cse4 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (not (= .cse0 (select .cse1 .cse2))) (< 32767 .cse3) (= .cse3 .cse0)))))) (forall ((v_ArrVal_2831 (Array Int Int)) (v_ArrVal_2830 (Array Int Int))) (let ((.cse9 (store (store .cse5 |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2830) |c_~#signed_char_Array_0~0.base| v_ArrVal_2831))) (let ((.cse7 (select .cse9 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse8 (mod (select .cse7 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse6 (select (select .cse9 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (not (= .cse6 (select .cse7 .cse2))) (= (+ 65536 .cse6) .cse8) (= .cse8 .cse6)))))) (forall ((v_ArrVal_2831 (Array Int Int)) (v_ArrVal_2830 (Array Int Int))) (let ((.cse13 (store (store .cse5 |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2830) |c_~#signed_char_Array_0~0.base| v_ArrVal_2831))) (let ((.cse11 (select .cse13 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse10 (select (select .cse13 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|)) (.cse12 (mod (select .cse11 |c_~#signed_long_int_Array_0~0.offset|) 65536))) (or (not (= .cse10 (select .cse11 .cse2))) (= (+ 65536 .cse10) .cse12) (< .cse12 32768))))))))) is different from false [2023-11-06 22:45:04,085 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 4 |c_~#signed_long_int_Array_0~0.offset|))) (and (forall ((v_ArrVal_2831 (Array Int Int)) (v_ArrVal_2830 (Array Int Int)) (v_ArrVal_2827 (Array Int Int))) (let ((.cse4 (store (store (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| (let ((.cse5 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2827))) (store (select .cse5 |c_~#signed_long_int_Array_0~0.base|) .cse3 (select (select .cse5 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|)))) |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2830) |c_~#signed_char_Array_0~0.base| v_ArrVal_2831))) (let ((.cse2 (select .cse4 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse1 (mod (select .cse2 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse0 (select (select .cse4 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (= .cse0 .cse1) (< 32767 .cse1) (not (= (select .cse2 .cse3) .cse0))))))) (forall ((v_ArrVal_2831 (Array Int Int)) (v_ArrVal_2830 (Array Int Int)) (v_ArrVal_2827 (Array Int Int))) (let ((.cse9 (store (store (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| (let ((.cse10 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2827))) (store (select .cse10 |c_~#signed_long_int_Array_0~0.base|) .cse3 (select (select .cse10 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|)))) |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2830) |c_~#signed_char_Array_0~0.base| v_ArrVal_2831))) (let ((.cse8 (select .cse9 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse6 (mod (select .cse8 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse7 (select (select .cse9 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (< .cse6 32768) (= (+ 65536 .cse7) .cse6) (not (= (select .cse8 .cse3) .cse7))))))) (forall ((v_ArrVal_2831 (Array Int Int)) (v_ArrVal_2830 (Array Int Int)) (v_ArrVal_2827 (Array Int Int))) (let ((.cse14 (store (store (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| (let ((.cse15 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2827))) (store (select .cse15 |c_~#signed_long_int_Array_0~0.base|) .cse3 (select (select .cse15 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|)))) |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2830) |c_~#signed_char_Array_0~0.base| v_ArrVal_2831))) (let ((.cse13 (select .cse14 |c_~#signed_long_int_Array_0~0.base|))) (let ((.cse12 (mod (select .cse13 |c_~#signed_long_int_Array_0~0.offset|) 65536)) (.cse11 (select (select .cse14 |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|))) (or (= .cse11 .cse12) (= (+ 65536 .cse11) .cse12) (not (= (select .cse13 .cse3) .cse11))))))))) is different from false [2023-11-06 22:45:04,425 INFO L322 Elim1Store]: treesize reduction 75, result has 39.5 percent of original size [2023-11-06 22:45:04,427 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 19851 treesize of output 11127 [2023-11-06 22:45:04,751 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:45:04,753 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 8355 treesize of output 7959 [2023-11-06 22:45:05,009 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4732 treesize of output 4712 [2023-11-06 22:45:05,137 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:45:05,138 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 4712 treesize of output 4649 [2023-11-06 22:45:05,273 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:45:05,274 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 4630 treesize of output 4485 [2023-11-06 22:45:05,373 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4520 treesize of output 4504 [2023-11-06 22:45:05,523 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:45:05,524 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 4504 treesize of output 4283 [2023-11-06 22:45:05,680 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:45:05,681 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 4264 treesize of output 4171 [2023-11-06 22:45:05,796 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4222 treesize of output 4206 [2023-11-06 22:45:05,974 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:45:05,975 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 4206 treesize of output 4049 [2023-11-06 22:45:06,136 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:45:06,137 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 4030 treesize of output 3967 [2023-11-06 22:45:30,890 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-11-06 22:45:36,496 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:45:36,496 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2023-11-06 22:45:36,518 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-11-06 22:45:36,838 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 22:45:36,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:36,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161328148] [2023-11-06 22:45:36,839 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:45:36,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978045299] [2023-11-06 22:45:36,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978045299] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:36,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:45:36,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 25 [2023-11-06 22:45:36,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155859990] [2023-11-06 22:45:36,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:36,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:45:36,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:36,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:45:36,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=350, Unknown=4, NotChecked=164, Total=600 [2023-11-06 22:45:36,841 INFO L87 Difference]: Start difference. First operand 232 states and 297 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:45:40,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:40,597 INFO L93 Difference]: Finished difference Result 417 states and 548 transitions. [2023-11-06 22:45:40,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 22:45:40,598 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 131 [2023-11-06 22:45:40,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:40,601 INFO L225 Difference]: With dead ends: 417 [2023-11-06 22:45:40,601 INFO L226 Difference]: Without dead ends: 415 [2023-11-06 22:45:40,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 237 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=310, Invalid=1328, Unknown=18, NotChecked=324, Total=1980 [2023-11-06 22:45:40,603 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 238 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 32 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 1220 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:40,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 819 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1026 Invalid, 26 Unknown, 1220 Unchecked, 1.7s Time] [2023-11-06 22:45:40,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-11-06 22:45:40,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 233. [2023-11-06 22:45:40,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 210 states have (on average 1.2809523809523808) internal successors, (269), 210 states have internal predecessors, (269), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:45:40,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 299 transitions. [2023-11-06 22:45:40,637 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 299 transitions. Word has length 131 [2023-11-06 22:45:40,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:40,638 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 299 transitions. [2023-11-06 22:45:40,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:45:40,638 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 299 transitions. [2023-11-06 22:45:40,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-06 22:45:40,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:40,639 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:40,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-06 22:45:40,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-06 22:45:40,846 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:40,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:40,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1518888597, now seen corresponding path program 1 times [2023-11-06 22:45:40,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:40,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089174531] [2023-11-06 22:45:40,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:40,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:40,878 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:45:40,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14617944] [2023-11-06 22:45:40,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:40,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:40,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:40,880 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:40,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-06 22:45:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:41,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:45:41,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:41,250 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 22:45:41,250 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:45:41,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:41,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089174531] [2023-11-06 22:45:41,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:45:41,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14617944] [2023-11-06 22:45:41,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14617944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:41,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:41,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:45:41,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333790702] [2023-11-06 22:45:41,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:41,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:45:41,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:41,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:45:41,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:45:41,252 INFO L87 Difference]: Start difference. First operand 233 states and 299 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:45:41,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:41,299 INFO L93 Difference]: Finished difference Result 463 states and 595 transitions. [2023-11-06 22:45:41,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:45:41,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 131 [2023-11-06 22:45:41,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:41,302 INFO L225 Difference]: With dead ends: 463 [2023-11-06 22:45:41,302 INFO L226 Difference]: Without dead ends: 233 [2023-11-06 22:45:41,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:45:41,303 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 0 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:41,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 266 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:45:41,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-06 22:45:41,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2023-11-06 22:45:41,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 210 states have (on average 1.276190476190476) internal successors, (268), 210 states have internal predecessors, (268), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 22:45:41,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 298 transitions. [2023-11-06 22:45:41,338 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 298 transitions. Word has length 131 [2023-11-06 22:45:41,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:41,339 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 298 transitions. [2023-11-06 22:45:41,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:45:41,339 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 298 transitions. [2023-11-06 22:45:41,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-06 22:45:41,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:41,341 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:41,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:45:41,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-06 22:45:41,547 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:41,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:41,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1378339987, now seen corresponding path program 1 times [2023-11-06 22:45:41,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:41,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067528835] [2023-11-06 22:45:41,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:41,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:41,579 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:45:41,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [117976241] [2023-11-06 22:45:41,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:41,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:41,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:41,581 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:41,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e379eb8e-4e6b-432f-a741-0e25acf49fa3/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-06 22:45:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:41,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-06 22:45:41,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:42,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:42,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:42,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:42,781 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 50 [2023-11-06 22:45:42,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:42,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:42,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:42,919 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 57 [2023-11-06 22:45:42,925 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:45:42,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:42,993 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 49 [2023-11-06 22:45:43,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:43,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:43,183 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:45:43,183 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 61 [2023-11-06 22:45:43,216 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2023-11-06 22:45:43,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:43,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:43,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:43,383 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 104 [2023-11-06 22:45:44,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:44,668 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:45:44,669 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 225 treesize of output 115 [2023-11-06 22:45:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-11-06 22:45:44,729 INFO L327 TraceCheckSpWp]: Computing backward predicates...