./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-37.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-37.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ace0252547f876708b624949027ec52b8b774af5160f42fe1d76fcc6574c405 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:57:09,041 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:57:09,131 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:57:09,138 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:57:09,139 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:57:09,162 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:57:09,164 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:57:09,165 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:57:09,166 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:57:09,171 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:57:09,172 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:57:09,173 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:57:09,174 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:57:09,176 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:57:09,176 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:57:09,177 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:57:09,177 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:57:09,178 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:57:09,178 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:57:09,179 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:57:09,180 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:57:09,180 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:57:09,181 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:57:09,181 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:57:09,182 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:57:09,183 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:57:09,183 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:57:09,184 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:57:09,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:09,185 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:57:09,186 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:57:09,186 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:57:09,187 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:57:09,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:57:09,187 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:57:09,187 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:57:09,188 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:57:09,188 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:57:09,188 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:57:09,188 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_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ace0252547f876708b624949027ec52b8b774af5160f42fe1d76fcc6574c405 [2023-11-19 07:57:09,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:09,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:09,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:09,577 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:09,577 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:09,579 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-37.i [2023-11-19 07:57:12,587 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:57:12,879 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:57:12,880 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-37.i [2023-11-19 07:57:12,890 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/data/fd164e9be/532f7da7e5ab4685b98cfa66c4d6576e/FLAGcf86970a1 [2023-11-19 07:57:12,906 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/data/fd164e9be/532f7da7e5ab4685b98cfa66c4d6576e [2023-11-19 07:57:12,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:57:12,910 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:57:12,912 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:12,912 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:57:12,934 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:57:12,939 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:12" (1/1) ... [2023-11-19 07:57:12,940 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@205f79a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:12, skipping insertion in model container [2023-11-19 07:57:12,941 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:12" (1/1) ... [2023-11-19 07:57:12,994 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:57:13,198 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_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-37.i[917,930] [2023-11-19 07:57:13,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:13,274 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:57:13,286 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_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-37.i[917,930] [2023-11-19 07:57:13,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:13,342 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:57:13,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:13 WrapperNode [2023-11-19 07:57:13,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:13,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:13,345 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:57:13,345 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:57:13,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:13" (1/1) ... [2023-11-19 07:57:13,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:13" (1/1) ... [2023-11-19 07:57:13,418 INFO L138 Inliner]: procedures = 29, calls = 157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 444 [2023-11-19 07:57:13,418 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:13,419 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:57:13,419 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:57:13,419 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:57:13,427 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:13" (1/1) ... [2023-11-19 07:57:13,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:13" (1/1) ... [2023-11-19 07:57:13,436 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:13" (1/1) ... [2023-11-19 07:57:13,436 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:13" (1/1) ... [2023-11-19 07:57:13,457 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:13" (1/1) ... [2023-11-19 07:57:13,462 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:13" (1/1) ... [2023-11-19 07:57:13,467 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:13" (1/1) ... [2023-11-19 07:57:13,470 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:13" (1/1) ... [2023-11-19 07:57:13,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:57:13,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:57:13,491 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:57:13,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:57:13,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:13" (1/1) ... [2023-11-19 07:57:13,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:13,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:13,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:13,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:57:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:57:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-19 07:57:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:57:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-19 07:57:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:57:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-11-19 07:57:13,584 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:57:13,585 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:57:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:57:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:57:13,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:57:13,721 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:57:13,723 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:57:14,397 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:57:14,407 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:57:14,407 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:57:14,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:14 BoogieIcfgContainer [2023-11-19 07:57:14,414 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:57:14,417 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:57:14,417 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:57:14,420 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:57:14,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:12" (1/3) ... [2023-11-19 07:57:14,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4bbb44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:14, skipping insertion in model container [2023-11-19 07:57:14,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:13" (2/3) ... [2023-11-19 07:57:14,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4bbb44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:14, skipping insertion in model container [2023-11-19 07:57:14,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:14" (3/3) ... [2023-11-19 07:57:14,423 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-37.i [2023-11-19 07:57:14,439 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:57:14,439 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:57:14,488 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:57:14,494 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@501b1b6e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:57:14,495 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:57:14,499 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) [2023-11-19 07:57:14,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-19 07:57:14,516 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:14,517 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] [2023-11-19 07:57:14,517 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:14,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:14,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1316505474, now seen corresponding path program 1 times [2023-11-19 07:57:14,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:14,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814020290] [2023-11-19 07:57:14,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:14,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:14,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:14,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814020290] [2023-11-19 07:57:14,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:57:14,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766686486] [2023-11-19 07:57:14,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:14,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:14,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:14,898 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:14,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:57:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:15,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:57:15,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2023-11-19 07:57:15,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:15,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766686486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:15,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:15,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:15,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023649843] [2023-11-19 07:57:15,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:15,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:57:15,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:15,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:57:15,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:57:15,374 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) [2023-11-19 07:57:15,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:15,441 INFO L93 Difference]: Finished difference Result 199 states and 313 transitions. [2023-11-19 07:57:15,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:57:15,443 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 [2023-11-19 07:57:15,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:15,456 INFO L225 Difference]: With dead ends: 199 [2023-11-19 07:57:15,456 INFO L226 Difference]: Without dead ends: 99 [2023-11-19 07:57:15,461 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 [2023-11-19 07:57:15,466 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 [2023-11-19 07:57:15,468 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] [2023-11-19 07:57:15,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-19 07:57:15,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-11-19 07:57:15,516 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) [2023-11-19 07:57:15,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 145 transitions. [2023-11-19 07:57:15,520 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 145 transitions. Word has length 124 [2023-11-19 07:57:15,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:15,521 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 145 transitions. [2023-11-19 07:57:15,521 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) [2023-11-19 07:57:15,521 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 145 transitions. [2023-11-19 07:57:15,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-19 07:57:15,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:15,526 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] [2023-11-19 07:57:15,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:57:15,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:57:15,742 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:15,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:15,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1135908192, now seen corresponding path program 1 times [2023-11-19 07:57:15,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:15,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099199160] [2023-11-19 07:57:15,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:15,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:15,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:15,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119803946] [2023-11-19 07:57:15,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:15,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:15,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:15,952 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:15,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:57:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:16,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:57:16,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:16,361 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-19 07:57:16,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:16,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:16,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099199160] [2023-11-19 07:57:16,362 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:16,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119803946] [2023-11-19 07:57:16,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119803946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:16,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:16,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:57:16,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123809688] [2023-11-19 07:57:16,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:16,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:16,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:16,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:16,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:16,367 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) [2023-11-19 07:57:16,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:16,444 INFO L93 Difference]: Finished difference Result 203 states and 298 transitions. [2023-11-19 07:57:16,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:16,445 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 [2023-11-19 07:57:16,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:16,447 INFO L225 Difference]: With dead ends: 203 [2023-11-19 07:57:16,448 INFO L226 Difference]: Without dead ends: 107 [2023-11-19 07:57:16,449 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 [2023-11-19 07:57:16,451 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 [2023-11-19 07:57:16,451 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] [2023-11-19 07:57:16,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-19 07:57:16,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 101. [2023-11-19 07:57:16,465 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) [2023-11-19 07:57:16,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 147 transitions. [2023-11-19 07:57:16,468 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 147 transitions. Word has length 124 [2023-11-19 07:57:16,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:16,470 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 147 transitions. [2023-11-19 07:57:16,470 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) [2023-11-19 07:57:16,470 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 147 transitions. [2023-11-19 07:57:16,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-19 07:57:16,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:16,473 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] [2023-11-19 07:57:16,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:16,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 07:57:16,690 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:16,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:16,691 INFO L85 PathProgramCache]: Analyzing trace with hash 639099170, now seen corresponding path program 1 times [2023-11-19 07:57:16,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:16,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621801618] [2023-11-19 07:57:16,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:16,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:16,780 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:16,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [936154786] [2023-11-19 07:57:16,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:16,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:16,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:16,788 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:16,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:57:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:17,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:57:17,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:17,100 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-19 07:57:17,101 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:17,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:17,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621801618] [2023-11-19 07:57:17,102 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:17,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936154786] [2023-11-19 07:57:17,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936154786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:17,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:17,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:57:17,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597571758] [2023-11-19 07:57:17,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:17,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:17,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:17,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:17,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:17,109 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) [2023-11-19 07:57:17,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:17,167 INFO L93 Difference]: Finished difference Result 203 states and 296 transitions. [2023-11-19 07:57:17,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:17,168 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 [2023-11-19 07:57:17,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:17,176 INFO L225 Difference]: With dead ends: 203 [2023-11-19 07:57:17,176 INFO L226 Difference]: Without dead ends: 105 [2023-11-19 07:57:17,180 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 [2023-11-19 07:57:17,183 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 [2023-11-19 07:57:17,187 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] [2023-11-19 07:57:17,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-19 07:57:17,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2023-11-19 07:57:17,212 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) [2023-11-19 07:57:17,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 149 transitions. [2023-11-19 07:57:17,213 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 149 transitions. Word has length 124 [2023-11-19 07:57:17,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:17,214 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 149 transitions. [2023-11-19 07:57:17,214 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) [2023-11-19 07:57:17,215 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 149 transitions. [2023-11-19 07:57:17,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-19 07:57:17,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:17,221 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] [2023-11-19 07:57:17,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:17,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:17,422 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:17,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:17,422 INFO L85 PathProgramCache]: Analyzing trace with hash 640946212, now seen corresponding path program 1 times [2023-11-19 07:57:17,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:17,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470765633] [2023-11-19 07:57:17,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:17,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:17,490 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:17,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1199994201] [2023-11-19 07:57:17,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:17,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:17,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:17,492 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:17,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:57:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:17,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-19 07:57:17,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:18,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:57:19,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-19 07:57:19,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:19,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:57:19,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:19,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:57:20,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:20,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:57:20,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:20,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:57:20,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2023-11-19 07:57:20,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:20,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2023-11-19 07:57:20,548 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 22 proven. 347 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-19 07:57:20,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:20,594 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_458 (Array Int Int)) (~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.offset Int) (v_ArrVal_459 Int)) (or (< 0 (+ (select (select (store (store |c_#memory_int| c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base (store (select |c_#memory_int| c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base) ~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.offset v_ArrVal_459)) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_458) c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base) ~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.offset) 1)) (< v_ArrVal_459 (select (select |c_#memory_int| c_~signed_char_Array_0_arraysigned_char_Array_0Var1_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var1_Pointer~0.offset)))) is different from false [2023-11-19 07:57:20,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:20,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470765633] [2023-11-19 07:57:20,637 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:20,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199994201] [2023-11-19 07:57:20,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199994201] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:20,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:57:20,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-19 07:57:20,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963666724] [2023-11-19 07:57:20,638 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:20,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:57:20,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:20,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:57:20,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=98, Unknown=1, NotChecked=20, Total=156 [2023-11-19 07:57:20,641 INFO L87 Difference]: Start difference. First operand 103 states and 149 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 7 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-19 07:57:21,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:21,492 INFO L93 Difference]: Finished difference Result 211 states and 302 transitions. [2023-11-19 07:57:21,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:57:21,493 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 7 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) Word has length 124 [2023-11-19 07:57:21,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:21,496 INFO L225 Difference]: With dead ends: 211 [2023-11-19 07:57:21,496 INFO L226 Difference]: Without dead ends: 111 [2023-11-19 07:57:21,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=218, Unknown=1, NotChecked=32, Total=342 [2023-11-19 07:57:21,498 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 134 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:21,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 565 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:57:21,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-19 07:57:21,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2023-11-19 07:57:21,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 89 states have (on average 1.3595505617977528) internal successors, (121), 89 states have internal predecessors, (121), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:57:21,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 151 transitions. [2023-11-19 07:57:21,516 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 151 transitions. Word has length 124 [2023-11-19 07:57:21,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:21,517 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 151 transitions. [2023-11-19 07:57:21,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 7 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-19 07:57:21,518 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 151 transitions. [2023-11-19 07:57:21,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-19 07:57:21,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:21,523 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] [2023-11-19 07:57:21,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:21,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:21,742 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:21,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:21,742 INFO L85 PathProgramCache]: Analyzing trace with hash 781494822, now seen corresponding path program 1 times [2023-11-19 07:57:21,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:21,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797079019] [2023-11-19 07:57:21,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:21,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:21,788 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:21,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2026519633] [2023-11-19 07:57:21,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:21,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:21,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:21,790 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:21,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:57:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:22,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-19 07:57:22,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:23,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:57:23,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-19 07:57:24,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:24,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:57:24,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:24,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:57:24,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:57:25,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-19 07:57:25,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2023-11-19 07:57:25,517 INFO L378 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 36 treesize of output 35 [2023-11-19 07:57:25,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 18 [2023-11-19 07:57:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 25 proven. 347 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-19 07:57:25,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:25,735 WARN L854 $PredicateComparison]: unable to prove that (forall ((~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.offset Int) (v_ArrVal_581 Int) (v_ArrVal_582 (Array Int Int))) (or (< (select (select |c_#memory_int| c_~signed_char_Array_0_arraysigned_char_Array_0Var1_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var1_Pointer~0.offset) v_ArrVal_581) (let ((.cse0 (store (store |c_#memory_int| c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base (store (select |c_#memory_int| c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base) ~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.offset v_ArrVal_581)) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_582))) (< (select (select .cse0 c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base) ~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.offset) (mod (select (select .cse0 c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.base) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.offset) 65536))))) is different from false [2023-11-19 07:57:25,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:25,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797079019] [2023-11-19 07:57:25,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:25,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026519633] [2023-11-19 07:57:25,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026519633] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:25,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:57:25,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-19 07:57:25,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898592282] [2023-11-19 07:57:25,769 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:25,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:57:25,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:25,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:57:25,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=256, Unknown=1, NotChecked=32, Total=342 [2023-11-19 07:57:25,772 INFO L87 Difference]: Start difference. First operand 107 states and 151 transitions. Second operand has 15 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-19 07:57:26,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:26,992 INFO L93 Difference]: Finished difference Result 223 states and 309 transitions. [2023-11-19 07:57:26,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:57:26,992 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) Word has length 124 [2023-11-19 07:57:26,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:26,994 INFO L225 Difference]: With dead ends: 223 [2023-11-19 07:57:26,994 INFO L226 Difference]: Without dead ends: 119 [2023-11-19 07:57:26,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=183, Invalid=632, Unknown=1, NotChecked=54, Total=870 [2023-11-19 07:57:26,996 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 135 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:26,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 366 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:57:26,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-19 07:57:27,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2023-11-19 07:57:27,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 95 states have (on average 1.3263157894736841) internal successors, (126), 95 states have internal predecessors, (126), 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) [2023-11-19 07:57:27,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 156 transitions. [2023-11-19 07:57:27,013 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 156 transitions. Word has length 124 [2023-11-19 07:57:27,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:27,014 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 156 transitions. [2023-11-19 07:57:27,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-19 07:57:27,014 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 156 transitions. [2023-11-19 07:57:27,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-19 07:57:27,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:27,016 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] [2023-11-19 07:57:27,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:27,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:27,226 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:27,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:27,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1023943512, now seen corresponding path program 1 times [2023-11-19 07:57:27,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:27,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251768039] [2023-11-19 07:57:27,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:27,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:27,275 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:27,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666970590] [2023-11-19 07:57:27,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:27,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:27,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:27,277 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:27,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:57:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:27,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-19 07:57:27,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:29,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:57:30,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:30,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:57:30,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:30,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:57:31,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:31,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:57:31,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:57:31,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:31,820 INFO L378 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 23 treesize of output 13 [2023-11-19 07:57:31,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:57:31,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:57:32,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2023-11-19 07:57:32,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:32,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 20 [2023-11-19 07:57:32,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 33 [2023-11-19 07:57:32,250 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 21 proven. 280 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-19 07:57:32,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:32,370 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_706 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.base (store (select |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.offset (select (select |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.offset))) c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.base v_ArrVal_706))) (= (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.offset) 256) (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.offset) 256)))) is different from false [2023-11-19 07:57:33,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:33,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251768039] [2023-11-19 07:57:33,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:33,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666970590] [2023-11-19 07:57:33,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666970590] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:33,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:57:33,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-19 07:57:33,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781356330] [2023-11-19 07:57:33,017 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:33,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-19 07:57:33,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:33,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 07:57:33,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=457, Unknown=24, NotChecked=46, Total=650 [2023-11-19 07:57:33,020 INFO L87 Difference]: Start difference. First operand 115 states and 156 transitions. Second operand has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 16 states have internal predecessors, (64), 4 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-19 07:57:34,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:34,521 INFO L93 Difference]: Finished difference Result 237 states and 318 transitions. [2023-11-19 07:57:34,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:57:34,522 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 16 states have internal predecessors, (64), 4 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 124 [2023-11-19 07:57:34,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:34,524 INFO L225 Difference]: With dead ends: 237 [2023-11-19 07:57:34,524 INFO L226 Difference]: Without dead ends: 125 [2023-11-19 07:57:34,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=286, Invalid=884, Unknown=24, NotChecked=66, Total=1260 [2023-11-19 07:57:34,526 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 294 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:34,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 563 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:57:34,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-19 07:57:34,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2023-11-19 07:57:34,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 98 states have internal predecessors, (128), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:57:34,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 158 transitions. [2023-11-19 07:57:34,549 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 158 transitions. Word has length 124 [2023-11-19 07:57:34,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:34,549 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 158 transitions. [2023-11-19 07:57:34,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 16 states have internal predecessors, (64), 4 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-19 07:57:34,550 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 158 transitions. [2023-11-19 07:57:34,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 07:57:34,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:34,552 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] [2023-11-19 07:57:34,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-19 07:57:34,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:34,768 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:34,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:34,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1357148731, now seen corresponding path program 1 times [2023-11-19 07:57:34,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:34,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041897333] [2023-11-19 07:57:34,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:34,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:34,811 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:34,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239932641] [2023-11-19 07:57:34,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:34,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:34,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:34,813 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:34,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:57:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:35,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 74 conjunts are in the unsatisfiable core [2023-11-19 07:57:35,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:37,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:57:37,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:57:38,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:57:39,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:57:39,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:57:40,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:57:41,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 35 [2023-11-19 07:57:41,095 INFO L378 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 29 treesize of output 30 [2023-11-19 07:57:41,350 INFO L378 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 36 treesize of output 30 [2023-11-19 07:57:41,359 INFO L378 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 9 treesize of output 7 [2023-11-19 07:57:41,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:41,442 INFO L378 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 32 treesize of output 37 [2023-11-19 07:57:41,550 INFO L378 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 36 treesize of output 35 [2023-11-19 07:57:41,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:41,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:41,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:41,673 INFO L378 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 36 treesize of output 35 [2023-11-19 07:57:41,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:41,915 INFO L378 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 44 treesize of output 20 [2023-11-19 07:57:41,955 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 1 proven. 347 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-19 07:57:41,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:42,090 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_832 (Array Int Int))) (< 0 (let ((.cse0 (store |c_#memory_int| c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.base v_ArrVal_832))) (+ (mod (select (select .cse0 c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.base) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.offset) 65536) (select (select .cse0 c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base) c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.offset))))) is different from false [2023-11-19 07:57:42,101 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_832 (Array Int Int)) (v_ArrVal_831 (Array Int Int))) (< 0 (let ((.cse0 (store (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.base v_ArrVal_831) c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.base v_ArrVal_832))) (+ (select (select .cse0 c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base) c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.offset) (mod (select (select .cse0 c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.base) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.offset) 65536))))) is different from false [2023-11-19 07:57:42,229 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_832 (Array Int Int)) (v_ArrVal_831 (Array Int Int)) (v_ArrVal_829 (Array Int Int)) (~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.offset Int)) (< 0 (let ((.cse0 (store (store (let ((.cse1 (store |c_#memory_int| c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.base v_ArrVal_829))) (store .cse1 c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var1_Pointer~0.base (store (select .cse1 c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var1_Pointer~0.base) c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var1_Pointer~0.offset (select (select .cse1 c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base) ~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.offset)))) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.base v_ArrVal_831) c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.base v_ArrVal_832))) (+ (select (select .cse0 c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base) c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.offset) (mod (select (select .cse0 c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.base) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.offset) 65536))))) is different from false [2023-11-19 07:57:42,325 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_832 (Array Int Int)) (v_ArrVal_831 (Array Int Int)) (v_ArrVal_827 (Array Int Int)) (v_ArrVal_829 (Array Int Int)) (~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.offset Int)) (let ((.cse0 (store (store |c_#memory_int| c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base (store (select |c_#memory_int| c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base) c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.offset (select (select |c_#memory_int| c_~signed_char_Array_0_arraysigned_char_Array_0Var1_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var1_Pointer~0.offset))) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_827))) (or (< (select (select .cse0 c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base) c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.offset) 0) (< 0 (let ((.cse1 (store (store (let ((.cse2 (store .cse0 c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.base v_ArrVal_829))) (store .cse2 c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var1_Pointer~0.base (store (select .cse2 c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var1_Pointer~0.base) c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var1_Pointer~0.offset (select (select .cse2 c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base) ~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.offset)))) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.base v_ArrVal_831) c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.base v_ArrVal_832))) (+ (select (select .cse1 c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base) c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.offset) (mod (select (select .cse1 c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.base) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.offset) 65536))))))) is different from false [2023-11-19 07:57:42,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:42,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041897333] [2023-11-19 07:57:42,366 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:42,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239932641] [2023-11-19 07:57:42,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239932641] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:42,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:57:42,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-19 07:57:42,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741599965] [2023-11-19 07:57:42,366 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:42,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-19 07:57:42,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:42,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 07:57:42,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=475, Unknown=11, NotChecked=188, Total=756 [2023-11-19 07:57:42,369 INFO L87 Difference]: Start difference. First operand 119 states and 158 transitions. Second operand has 19 states, 18 states have (on average 3.888888888888889) internal successors, (70), 17 states have internal predecessors, (70), 6 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2023-11-19 07:57:45,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:57:52,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:52,989 INFO L93 Difference]: Finished difference Result 268 states and 357 transitions. [2023-11-19 07:57:52,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 07:57:52,990 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.888888888888889) internal successors, (70), 17 states have internal predecessors, (70), 6 states have call successors, (15), 6 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 127 [2023-11-19 07:57:52,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:52,994 INFO L225 Difference]: With dead ends: 268 [2023-11-19 07:57:52,994 INFO L226 Difference]: Without dead ends: 152 [2023-11-19 07:57:52,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=279, Invalid=1208, Unknown=11, NotChecked=308, Total=1806 [2023-11-19 07:57:52,997 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 766 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:52,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 478 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 778 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2023-11-19 07:57:52,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-11-19 07:57:53,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 120. [2023-11-19 07:57:53,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 99 states have (on average 1.303030303030303) internal successors, (129), 99 states have internal predecessors, (129), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:57:53,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 159 transitions. [2023-11-19 07:57:53,030 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 159 transitions. Word has length 127 [2023-11-19 07:57:53,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:53,031 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 159 transitions. [2023-11-19 07:57:53,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.888888888888889) internal successors, (70), 17 states have internal predecessors, (70), 6 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2023-11-19 07:57:53,031 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 159 transitions. [2023-11-19 07:57:53,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 07:57:53,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:53,033 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] [2023-11-19 07:57:53,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:53,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:53,256 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:53,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:53,256 INFO L85 PathProgramCache]: Analyzing trace with hash 346031481, now seen corresponding path program 1 times [2023-11-19 07:57:53,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:53,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374700560] [2023-11-19 07:57:53,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:53,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:53,295 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:53,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1004009366] [2023-11-19 07:57:53,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:53,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:53,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:53,297 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:53,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1fd7f6-b6a5-47a3-8ff0-da577e86c06a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:57:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:53,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-19 07:57:53,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:55,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:55,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-11-19 07:57:55,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:55,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 13 [2023-11-19 07:57:55,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:55,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 13 [2023-11-19 07:57:55,696 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2023-11-19 07:57:55,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 84 [2023-11-19 07:57:55,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:55,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:55,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:55,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 87 [2023-11-19 07:57:55,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:55,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:55,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:55,910 INFO L378 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 61 treesize of output 51 [2023-11-19 07:57:55,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:55,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:55,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:55,999 INFO L349 Elim1Store]: treesize reduction 110, result has 19.7 percent of original size [2023-11-19 07:57:55,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 67 treesize of output 105 [2023-11-19 07:57:56,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:56,171 INFO L349 Elim1Store]: treesize reduction 56, result has 41.1 percent of original size [2023-11-19 07:57:56,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 75 treesize of output 94