./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-92.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/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_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-92.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/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_4d53ab0e-19d3-4082-803f-b5887f213e60/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 b3f7842def3ffa55e8096756f751ff9953a1769b743d5a1524389a2dc0b8c63f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:00:34,837 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:00:34,919 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:00:34,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:00:34,926 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:00:34,952 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:00:34,953 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:00:34,954 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:00:34,955 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:00:34,955 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:00:34,956 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:00:34,957 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:00:34,957 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:00:34,958 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:00:34,958 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:00:34,959 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:00:34,959 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:00:34,960 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:00:34,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:00:34,961 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:00:34,961 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:00:34,962 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:00:34,963 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:00:34,963 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:00:34,964 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:00:34,964 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:00:34,964 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:00:34,965 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:00:34,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:34,974 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:00:34,975 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:00:34,975 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:00:34,976 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:00:34,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:00:34,977 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:00:34,978 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:00:34,978 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:00:34,978 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:00:34,979 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:00:34,979 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_4d53ab0e-19d3-4082-803f-b5887f213e60/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3f7842def3ffa55e8096756f751ff9953a1769b743d5a1524389a2dc0b8c63f [2023-11-19 08:00:35,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:00:35,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:00:35,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:00:35,374 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:00:35,375 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:00:35,377 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-92.i [2023-11-19 08:00:38,591 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:00:38,823 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:00:38,824 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-92.i [2023-11-19 08:00:38,848 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/data/488a3be23/4976dc11ac674304b636557a3dd3387a/FLAG4570e593f [2023-11-19 08:00:38,863 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/data/488a3be23/4976dc11ac674304b636557a3dd3387a [2023-11-19 08:00:38,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:00:38,867 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:00:38,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:38,869 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:00:38,875 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:00:38,876 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:38" (1/1) ... [2023-11-19 08:00:38,877 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f7e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:38, skipping insertion in model container [2023-11-19 08:00:38,878 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:38" (1/1) ... [2023-11-19 08:00:38,921 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:00:39,076 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_4d53ab0e-19d3-4082-803f-b5887f213e60/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-92.i[917,930] [2023-11-19 08:00:39,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:39,171 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:00:39,182 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_4d53ab0e-19d3-4082-803f-b5887f213e60/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-92.i[917,930] [2023-11-19 08:00:39,222 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:39,246 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:00:39,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:39 WrapperNode [2023-11-19 08:00:39,246 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:39,248 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:39,248 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:00:39,248 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:00:39,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:39" (1/1) ... [2023-11-19 08:00:39,271 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:39" (1/1) ... [2023-11-19 08:00:39,329 INFO L138 Inliner]: procedures = 29, calls = 159, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 429 [2023-11-19 08:00:39,330 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:39,330 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:00:39,331 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:00:39,331 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:00:39,341 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:39" (1/1) ... [2023-11-19 08:00:39,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:39" (1/1) ... [2023-11-19 08:00:39,350 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:39" (1/1) ... [2023-11-19 08:00:39,351 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:39" (1/1) ... [2023-11-19 08:00:39,371 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:39" (1/1) ... [2023-11-19 08:00:39,376 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:39" (1/1) ... [2023-11-19 08:00:39,381 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:39" (1/1) ... [2023-11-19 08:00:39,384 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:39" (1/1) ... [2023-11-19 08:00:39,391 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:00:39,392 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:00:39,392 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:00:39,392 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:00:39,393 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:39" (1/1) ... [2023-11-19 08:00:39,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:39,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:39,439 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:39,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:00:39,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:00:39,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-19 08:00:39,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:00:39,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-19 08:00:39,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:00:39,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-11-19 08:00:39,489 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:00:39,490 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:00:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:00:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:00:39,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:00:39,680 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:00:39,685 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:00:40,468 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:00:40,484 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:00:40,484 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:00:40,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:40 BoogieIcfgContainer [2023-11-19 08:00:40,492 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:00:40,494 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:00:40,495 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:00:40,498 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:00:40,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:38" (1/3) ... [2023-11-19 08:00:40,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e226176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:40, skipping insertion in model container [2023-11-19 08:00:40,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:39" (2/3) ... [2023-11-19 08:00:40,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e226176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:40, skipping insertion in model container [2023-11-19 08:00:40,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:40" (3/3) ... [2023-11-19 08:00:40,502 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-92.i [2023-11-19 08:00:40,518 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:00:40,518 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:00:40,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:40,576 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;@4932971e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:40,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:00:40,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 89 states have (on average 1.3820224719101124) internal successors, (123), 90 states have internal predecessors, (123), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 08:00:40,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-19 08:00:40,598 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:40,599 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:40,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:40,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:40,604 INFO L85 PathProgramCache]: Analyzing trace with hash 250668227, now seen corresponding path program 1 times [2023-11-19 08:00:40,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:40,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226926155] [2023-11-19 08:00:40,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:40,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:41,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:41,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226926155] [2023-11-19 08:00:41,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:00:41,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676344962] [2023-11-19 08:00:41,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:41,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:41,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:41,015 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:41,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:00:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:41,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:00:41,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:41,477 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2023-11-19 08:00:41,478 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:00:41,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676344962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:41,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:41,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:41,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521619538] [2023-11-19 08:00:41,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:41,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:00:41,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:41,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:00:41,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:00:41,520 INFO L87 Difference]: Start difference. First operand has 111 states, 89 states have (on average 1.3820224719101124) internal successors, (123), 90 states have internal predecessors, (123), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-19 08:00:41,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:41,583 INFO L93 Difference]: Finished difference Result 215 states and 335 transitions. [2023-11-19 08:00:41,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:00:41,585 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 153 [2023-11-19 08:00:41,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:41,596 INFO L225 Difference]: With dead ends: 215 [2023-11-19 08:00:41,596 INFO L226 Difference]: Without dead ends: 107 [2023-11-19 08:00:41,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:00:41,611 INFO L413 NwaCegarLoop]: 154 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, 154 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:41,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:41,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-19 08:00:41,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-11-19 08:00:41,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 86 states have (on average 1.3488372093023255) internal successors, (116), 86 states have internal predecessors, (116), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 08:00:41,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 154 transitions. [2023-11-19 08:00:41,665 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 154 transitions. Word has length 153 [2023-11-19 08:00:41,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:41,665 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 154 transitions. [2023-11-19 08:00:41,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-19 08:00:41,666 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 154 transitions. [2023-11-19 08:00:41,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-19 08:00:41,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:41,671 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:41,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:41,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 08:00:41,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:41,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:41,894 INFO L85 PathProgramCache]: Analyzing trace with hash -2058345439, now seen corresponding path program 1 times [2023-11-19 08:00:41,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:41,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413670648] [2023-11-19 08:00:41,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:41,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:42,101 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:42,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974837500] [2023-11-19 08:00:42,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:42,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:42,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:42,118 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:42,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:00:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:42,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:00:42,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:42,546 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-19 08:00:42,547 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:00:42,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:42,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413670648] [2023-11-19 08:00:42,547 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:00:42,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974837500] [2023-11-19 08:00:42,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974837500] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:42,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:42,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:00:42,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731902285] [2023-11-19 08:00:42,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:42,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:00:42,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:42,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:00:42,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:00:42,552 INFO L87 Difference]: Start difference. First operand 107 states and 154 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-19 08:00:42,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:42,632 INFO L93 Difference]: Finished difference Result 215 states and 310 transitions. [2023-11-19 08:00:42,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:00:42,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 153 [2023-11-19 08:00:42,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:42,637 INFO L225 Difference]: With dead ends: 215 [2023-11-19 08:00:42,637 INFO L226 Difference]: Without dead ends: 111 [2023-11-19 08:00:42,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:42,640 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 3 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:42,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 445 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:42,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-19 08:00:42,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2023-11-19 08:00:42,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 88 states have (on average 1.3409090909090908) internal successors, (118), 88 states have internal predecessors, (118), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 08:00:42,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 156 transitions. [2023-11-19 08:00:42,660 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 156 transitions. Word has length 153 [2023-11-19 08:00:42,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:42,662 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 156 transitions. [2023-11-19 08:00:42,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-19 08:00:42,663 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 156 transitions. [2023-11-19 08:00:42,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-19 08:00:42,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:42,666 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:42,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:42,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:42,874 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:42,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:42,874 INFO L85 PathProgramCache]: Analyzing trace with hash -2056498397, now seen corresponding path program 1 times [2023-11-19 08:00:42,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:42,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648789867] [2023-11-19 08:00:42,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:42,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:42,990 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:42,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771997378] [2023-11-19 08:00:42,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:42,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:42,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:42,995 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:43,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:00:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:43,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-19 08:00:43,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:45,691 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 08:00:46,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:46,048 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 08:00:46,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:46,372 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 08:00:46,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:46,426 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 08:00:46,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-19 08:00:46,466 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 1 proven. 307 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2023-11-19 08:00:46,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:46,499 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_366 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| c_~double_Array_0_arraydouble_Array_0arrayVar2_Pointer~0.base v_ArrVal_366) c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.offset) 1))) is different from false [2023-11-19 08:00:46,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:46,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648789867] [2023-11-19 08:00:46,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:00:46,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771997378] [2023-11-19 08:00:46,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771997378] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:46,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:00:46,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-19 08:00:46,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028339219] [2023-11-19 08:00:46,615 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:46,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 08:00:46,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:46,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 08:00:46,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=4, NotChecked=24, Total=210 [2023-11-19 08:00:46,620 INFO L87 Difference]: Start difference. First operand 109 states and 156 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 10 states have internal predecessors, (70), 4 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-19 08:00:47,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:47,626 INFO L93 Difference]: Finished difference Result 225 states and 318 transitions. [2023-11-19 08:00:47,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 08:00:47,627 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 10 states have internal predecessors, (70), 4 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 153 [2023-11-19 08:00:47,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:47,635 INFO L225 Difference]: With dead ends: 225 [2023-11-19 08:00:47,639 INFO L226 Difference]: Without dead ends: 119 [2023-11-19 08:00:47,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=4, NotChecked=44, Total=600 [2023-11-19 08:00:47,646 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 204 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:47,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 532 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 08:00:47,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-19 08:00:47,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 113. [2023-11-19 08:00:47,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 91 states have (on average 1.3186813186813187) internal successors, (120), 91 states have internal predecessors, (120), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 08:00:47,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 158 transitions. [2023-11-19 08:00:47,677 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 158 transitions. Word has length 153 [2023-11-19 08:00:47,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:47,678 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 158 transitions. [2023-11-19 08:00:47,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 10 states have internal predecessors, (70), 4 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-19 08:00:47,679 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 158 transitions. [2023-11-19 08:00:47,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-19 08:00:47,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:47,682 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:47,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:47,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:47,901 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:47,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:47,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1633796571, now seen corresponding path program 1 times [2023-11-19 08:00:47,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:47,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570663976] [2023-11-19 08:00:47,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:47,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:47,999 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:48,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1380408446] [2023-11-19 08:00:48,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:48,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:48,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:48,003 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:48,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:00:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:48,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-19 08:00:48,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:50,030 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 08:00:50,684 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 08:00:51,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-19 08:00:51,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-19 08:00:52,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-19 08:00:52,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:52,957 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 16 [2023-11-19 08:00:53,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:53,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:53,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:53,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:53,720 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 08:00:53,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 34 [2023-11-19 08:00:53,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:53,842 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-19 08:00:53,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-11-19 08:00:53,876 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 224 proven. 337 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-11-19 08:00:53,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:05,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:05,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570663976] [2023-11-19 08:01:05,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:05,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380408446] [2023-11-19 08:01:05,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380408446] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:05,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:01:05,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-19 08:01:05,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675926462] [2023-11-19 08:01:05,756 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:05,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 08:01:05,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:05,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 08:01:05,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=466, Unknown=6, NotChecked=0, Total=552 [2023-11-19 08:01:05,759 INFO L87 Difference]: Start difference. First operand 113 states and 158 transitions. Second operand has 18 states, 16 states have (on average 4.9375) internal successors, (79), 17 states have internal predecessors, (79), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (19), 5 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-19 08:01:07,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:07,510 INFO L93 Difference]: Finished difference Result 244 states and 336 transitions. [2023-11-19 08:01:07,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 08:01:07,517 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.9375) internal successors, (79), 17 states have internal predecessors, (79), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (19), 5 states have call predecessors, (19), 7 states have call successors, (19) Word has length 153 [2023-11-19 08:01:07,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:07,521 INFO L225 Difference]: With dead ends: 244 [2023-11-19 08:01:07,521 INFO L226 Difference]: Without dead ends: 134 [2023-11-19 08:01:07,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=215, Invalid=1039, Unknown=6, NotChecked=0, Total=1260 [2023-11-19 08:01:07,524 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 114 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:07,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 798 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 08:01:07,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-11-19 08:01:07,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 125. [2023-11-19 08:01:07,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 101 states have (on average 1.297029702970297) internal successors, (131), 101 states have internal predecessors, (131), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 08:01:07,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 169 transitions. [2023-11-19 08:01:07,550 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 169 transitions. Word has length 153 [2023-11-19 08:01:07,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:07,551 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 169 transitions. [2023-11-19 08:01:07,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.9375) internal successors, (79), 17 states have internal predecessors, (79), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (19), 5 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-19 08:01:07,551 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 169 transitions. [2023-11-19 08:01:07,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-19 08:01:07,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:07,554 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:07,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:07,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:07,770 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:07,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:07,771 INFO L85 PathProgramCache]: Analyzing trace with hash 855732391, now seen corresponding path program 1 times [2023-11-19 08:01:07,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:07,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164348902] [2023-11-19 08:01:07,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:07,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:07,838 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:07,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857801284] [2023-11-19 08:01:07,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:07,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:07,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:07,843 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:07,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:01:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:08,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-19 08:01:08,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:12,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:12,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:12,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:12,829 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-19 08:01:12,830 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 3 case distinctions, treesize of input 34 treesize of output 28 [2023-11-19 08:01:12,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:12,927 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 27 treesize of output 18 [2023-11-19 08:01:13,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:13,013 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 27 treesize of output 18 [2023-11-19 08:01:13,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:13,064 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 27 treesize of output 18 [2023-11-19 08:01:13,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:13,102 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 27 treesize of output 18 [2023-11-19 08:01:13,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:01:13,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-11-19 08:01:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-19 08:01:13,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:13,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:13,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164348902] [2023-11-19 08:01:13,213 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:13,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857801284] [2023-11-19 08:01:13,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857801284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:13,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:13,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 08:01:13,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269667478] [2023-11-19 08:01:13,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:13,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 08:01:13,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:13,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 08:01:13,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:01:13,216 INFO L87 Difference]: Start difference. First operand 125 states and 169 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-19 08:01:14,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:14,014 INFO L93 Difference]: Finished difference Result 325 states and 446 transitions. [2023-11-19 08:01:14,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:01:14,015 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 153 [2023-11-19 08:01:14,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:14,018 INFO L225 Difference]: With dead ends: 325 [2023-11-19 08:01:14,018 INFO L226 Difference]: Without dead ends: 203 [2023-11-19 08:01:14,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-19 08:01:14,019 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 458 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:14,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 463 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 08:01:14,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-11-19 08:01:14,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 138. [2023-11-19 08:01:14,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 114 states have (on average 1.3070175438596492) internal successors, (149), 114 states have internal predecessors, (149), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 08:01:14,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 187 transitions. [2023-11-19 08:01:14,048 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 187 transitions. Word has length 153 [2023-11-19 08:01:14,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:14,049 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 187 transitions. [2023-11-19 08:01:14,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-19 08:01:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 187 transitions. [2023-11-19 08:01:14,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-19 08:01:14,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:14,052 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:14,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:14,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:14,266 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:14,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:14,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2135596069, now seen corresponding path program 1 times [2023-11-19 08:01:14,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:14,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226668148] [2023-11-19 08:01:14,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:14,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:14,312 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:14,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [635269453] [2023-11-19 08:01:14,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:14,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:14,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:14,314 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:14,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d53ab0e-19d3-4082-803f-b5887f213e60/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:01:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:14,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 123 conjunts are in the unsatisfiable core [2023-11-19 08:01:14,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:18,431 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 08:01:19,589 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 08:01:21,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-19 08:01:22,316 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 37 treesize of output 31 [2023-11-19 08:01:24,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44 [2023-11-19 08:01:25,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:25,814 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 51 treesize of output 36 [2023-11-19 08:01:28,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 113 [2023-11-19 08:01:28,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:28,818 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 170 treesize of output 121 [2023-11-19 08:01:29,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:29,712 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 177 treesize of output 126 [2023-11-19 08:01:30,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:30,010 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 177 treesize of output 126 [2023-11-19 08:01:30,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:30,293 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 177 treesize of output 126 [2023-11-19 08:01:30,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 85 [2023-11-19 08:01:31,005 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 285 proven. 324 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-19 08:01:31,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:31,393 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_756 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| c_~float_Array_0_arrayfloat_Array_0arrayVar0_Pointer~0.base v_ArrVal_756))) (let ((.cse1 (mod (+ (* (select (select .cse2 c_~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.offset) 255) (select (select .cse2 c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.offset) (select (select .cse2 c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.offset)) 256)) (.cse0 (select (select .cse2 c_~signed_char_Array_0_arraysigned_char_Array_0Var5_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var5_Pointer~0.offset))) (or (= (+ 256 .cse0) .cse1) (= .cse1 .cse0))))) (forall ((v_ArrVal_756 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| c_~float_Array_0_arrayfloat_Array_0arrayVar0_Pointer~0.base v_ArrVal_756))) (let ((.cse3 (mod (+ (* (select (select .cse4 c_~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.offset) 255) (select (select .cse4 c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.offset) (select (select .cse4 c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.offset)) 256))) (or (< 127 .cse3) (= .cse3 (select (select .cse4 c_~signed_char_Array_0_arraysigned_char_Array_0Var5_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var5_Pointer~0.offset)))))) (forall ((v_ArrVal_756 (Array Int Int))) (let ((.cse5 (store |c_#memory_int| c_~float_Array_0_arrayfloat_Array_0arrayVar0_Pointer~0.base v_ArrVal_756))) (let ((.cse6 (mod (+ (* (select (select .cse5 c_~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.offset) 255) (select (select .cse5 c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.offset) (select (select .cse5 c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.offset)) 256))) (or (= (+ 256 (select (select .cse5 c_~signed_char_Array_0_arraysigned_char_Array_0Var5_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var5_Pointer~0.offset)) .cse6) (< .cse6 128)))))) is different from false [2023-11-19 08:01:31,460 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_755 (Array Int Int)) (v_ArrVal_756 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| c_~BOOL_unsigned_char_Array_0_arrayBOOL_unsigned_char_Array_0Var0_Pointer~0.base v_ArrVal_755) c_~float_Array_0_arrayfloat_Array_0arrayVar0_Pointer~0.base v_ArrVal_756))) (let ((.cse0 (mod (+ (select (select .cse1 c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.offset) (select (select .cse1 c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.offset) (* 255 (select (select .cse1 c_~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.offset))) 256))) (or (< 127 .cse0) (= (select (select .cse1 c_~signed_char_Array_0_arraysigned_char_Array_0Var5_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var5_Pointer~0.offset) .cse0))))) (forall ((v_ArrVal_755 (Array Int Int)) (v_ArrVal_756 (Array Int Int))) (let ((.cse4 (store (store |c_#memory_int| c_~BOOL_unsigned_char_Array_0_arrayBOOL_unsigned_char_Array_0Var0_Pointer~0.base v_ArrVal_755) c_~float_Array_0_arrayfloat_Array_0arrayVar0_Pointer~0.base v_ArrVal_756))) (let ((.cse2 (select (select .cse4 c_~signed_char_Array_0_arraysigned_char_Array_0Var5_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var5_Pointer~0.offset)) (.cse3 (mod (+ (select (select .cse4 c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.offset) (select (select .cse4 c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.offset) (* 255 (select (select .cse4 c_~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.offset))) 256))) (or (= .cse2 .cse3) (= (+ .cse2 256) .cse3))))) (forall ((v_ArrVal_755 (Array Int Int)) (v_ArrVal_756 (Array Int Int))) (let ((.cse6 (store (store |c_#memory_int| c_~BOOL_unsigned_char_Array_0_arrayBOOL_unsigned_char_Array_0Var0_Pointer~0.base v_ArrVal_755) c_~float_Array_0_arrayfloat_Array_0arrayVar0_Pointer~0.base v_ArrVal_756))) (let ((.cse5 (mod (+ (select (select .cse6 c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.offset) (select (select .cse6 c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.offset) (* 255 (select (select .cse6 c_~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.offset))) 256))) (or (< .cse5 128) (= (+ (select (select .cse6 c_~signed_char_Array_0_arraysigned_char_Array_0Var5_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var5_Pointer~0.offset) 256) .cse5)))))) is different from false [2023-11-19 08:01:31,531 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_755 (Array Int Int)) (v_ArrVal_754 (Array Int Int)) (v_ArrVal_756 (Array Int Int))) (let ((.cse0 (store (store (store |c_#memory_int| c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_754) c_~BOOL_unsigned_char_Array_0_arrayBOOL_unsigned_char_Array_0Var0_Pointer~0.base v_ArrVal_755) c_~float_Array_0_arrayfloat_Array_0arrayVar0_Pointer~0.base v_ArrVal_756))) (let ((.cse1 (mod (+ (select (select .cse0 c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.offset) (* (select (select .cse0 c_~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.offset) 255) (select (select .cse0 c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.offset)) 256))) (or (= (+ 256 (select (select .cse0 c_~signed_char_Array_0_arraysigned_char_Array_0Var5_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var5_Pointer~0.offset)) .cse1) (< .cse1 128))))) (forall ((v_ArrVal_755 (Array Int Int)) (v_ArrVal_754 (Array Int Int)) (v_ArrVal_756 (Array Int Int))) (let ((.cse3 (store (store (store |c_#memory_int| c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_754) c_~BOOL_unsigned_char_Array_0_arrayBOOL_unsigned_char_Array_0Var0_Pointer~0.base v_ArrVal_755) c_~float_Array_0_arrayfloat_Array_0arrayVar0_Pointer~0.base v_ArrVal_756))) (let ((.cse2 (mod (+ (select (select .cse3 c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.offset) (* (select (select .cse3 c_~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.offset) 255) (select (select .cse3 c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.offset)) 256))) (or (< 127 .cse2) (= .cse2 (select (select .cse3 c_~signed_char_Array_0_arraysigned_char_Array_0Var5_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var5_Pointer~0.offset)))))) (forall ((v_ArrVal_755 (Array Int Int)) (v_ArrVal_754 (Array Int Int)) (v_ArrVal_756 (Array Int Int))) (let ((.cse6 (store (store (store |c_#memory_int| c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_754) c_~BOOL_unsigned_char_Array_0_arrayBOOL_unsigned_char_Array_0Var0_Pointer~0.base v_ArrVal_755) c_~float_Array_0_arrayfloat_Array_0arrayVar0_Pointer~0.base v_ArrVal_756))) (let ((.cse5 (mod (+ (select (select .cse6 c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var4_Pointer~0.offset) (* (select (select .cse6 c_~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.offset) 255) (select (select .cse6 c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.offset)) 256)) (.cse4 (select (select .cse6 c_~signed_char_Array_0_arraysigned_char_Array_0Var5_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var5_Pointer~0.offset))) (or (= (+ 256 .cse4) .cse5) (= .cse5 .cse4)))))) is different from false