./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-29.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/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_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-29.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/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_65d88ce9-a674-4f93-a3f5-fa44105331a3/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 7e3b862ba9a2a4c1c92e3db12119deeccd82c1339b8fd16f8352680fc1302c9d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:36,095 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:36,229 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:47:36,234 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:36,234 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:36,262 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:36,263 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:36,263 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:36,264 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:36,270 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:36,271 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:36,271 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:36,272 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:36,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:36,274 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:47:36,275 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:36,275 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:36,276 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:36,276 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:36,277 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:47:36,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:36,278 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:47:36,278 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:36,279 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:47:36,279 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:36,280 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:36,281 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:36,281 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:36,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:36,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:36,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:36,284 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:47:36,284 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:47:36,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:47:36,284 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:36,284 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:47:36,285 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:36,285 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:36,285 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:36,285 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_65d88ce9-a674-4f93-a3f5-fa44105331a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e3b862ba9a2a4c1c92e3db12119deeccd82c1339b8fd16f8352680fc1302c9d [2023-11-19 07:47:36,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:36,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:36,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:36,691 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:36,692 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:36,693 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-29.i [2023-11-19 07:47:39,977 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:47:40,218 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:47:40,219 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-29.i [2023-11-19 07:47:40,227 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/data/a05b741f8/5e53109496d844a693bd2d77eec26337/FLAG585ba4dcc [2023-11-19 07:47:40,246 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/data/a05b741f8/5e53109496d844a693bd2d77eec26337 [2023-11-19 07:47:40,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:47:40,252 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:47:40,254 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:40,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:47:40,261 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:47:40,262 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:40" (1/1) ... [2023-11-19 07:47:40,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70e6f8da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:40, skipping insertion in model container [2023-11-19 07:47:40,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:40" (1/1) ... [2023-11-19 07:47:40,295 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:40,476 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_65d88ce9-a674-4f93-a3f5-fa44105331a3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-29.i[915,928] [2023-11-19 07:47:40,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:40,532 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:47:40,549 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_65d88ce9-a674-4f93-a3f5-fa44105331a3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-29.i[915,928] [2023-11-19 07:47:40,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:40,592 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:47:40,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:40 WrapperNode [2023-11-19 07:47:40,592 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:40,594 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:40,595 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:47:40,595 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:47:40,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:40" (1/1) ... [2023-11-19 07:47:40,617 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:40" (1/1) ... [2023-11-19 07:47:40,667 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 95 [2023-11-19 07:47:40,668 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:40,669 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:47:40,669 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:47:40,669 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:47:40,682 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:40" (1/1) ... [2023-11-19 07:47:40,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:40" (1/1) ... [2023-11-19 07:47:40,686 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:40" (1/1) ... [2023-11-19 07:47:40,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:40" (1/1) ... [2023-11-19 07:47:40,695 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:40" (1/1) ... [2023-11-19 07:47:40,699 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:40" (1/1) ... [2023-11-19 07:47:40,702 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:40" (1/1) ... [2023-11-19 07:47:40,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:40" (1/1) ... [2023-11-19 07:47:40,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:47:40,709 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:47:40,709 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:47:40,710 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:47:40,711 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:40" (1/1) ... [2023-11-19 07:47:40,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:40,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:40,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:47:40,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:47:40,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:47:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:47:40,860 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:47:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:47:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:47:40,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:47:40,969 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:47:40,973 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:47:41,299 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:47:41,310 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:47:41,310 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:47:41,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:41 BoogieIcfgContainer [2023-11-19 07:47:41,316 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:47:41,319 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:47:41,320 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:47:41,324 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:47:41,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:40" (1/3) ... [2023-11-19 07:47:41,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@663efcba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:41, skipping insertion in model container [2023-11-19 07:47:41,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:40" (2/3) ... [2023-11-19 07:47:41,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@663efcba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:41, skipping insertion in model container [2023-11-19 07:47:41,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:41" (3/3) ... [2023-11-19 07:47:41,330 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-29.i [2023-11-19 07:47:41,351 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:47:41,351 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:47:41,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:41,425 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;@558f30f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:41,425 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:47:41,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 29 states have internal predecessors, (37), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:47:41,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-19 07:47:41,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:41,449 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:41,450 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:41,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:41,458 INFO L85 PathProgramCache]: Analyzing trace with hash 996422294, now seen corresponding path program 1 times [2023-11-19 07:47:41,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:41,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755925245] [2023-11-19 07:47:41,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:41,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:41,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:41,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755925245] [2023-11-19 07:47:41,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:47:41,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171258475] [2023-11-19 07:47:41,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:41,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:41,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:41,822 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:41,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:47:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:42,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:47:42,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-11-19 07:47:42,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:42,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171258475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:42,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:42,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:42,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066444628] [2023-11-19 07:47:42,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:42,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:47:42,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:42,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:47:42,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:47:42,217 INFO L87 Difference]: Start difference. First operand has 47 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 29 states have internal predecessors, (37), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 07:47:42,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:42,287 INFO L93 Difference]: Finished difference Result 87 states and 148 transitions. [2023-11-19 07:47:42,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:47:42,289 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 100 [2023-11-19 07:47:42,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:42,303 INFO L225 Difference]: With dead ends: 87 [2023-11-19 07:47:42,303 INFO L226 Difference]: Without dead ends: 43 [2023-11-19 07:47:42,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:47:42,317 INFO L413 NwaCegarLoop]: 62 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, 62 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:42,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:42,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-19 07:47:42,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-11-19 07:47:42,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:47:42,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 62 transitions. [2023-11-19 07:47:42,389 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 62 transitions. Word has length 100 [2023-11-19 07:47:42,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:42,390 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 62 transitions. [2023-11-19 07:47:42,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 07:47:42,390 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 62 transitions. [2023-11-19 07:47:42,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-19 07:47:42,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:42,397 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:42,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:42,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:47:42,603 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:42,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:42,604 INFO L85 PathProgramCache]: Analyzing trace with hash 686107286, now seen corresponding path program 1 times [2023-11-19 07:47:42,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:42,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41052289] [2023-11-19 07:47:42,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:42,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:42,712 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:42,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22359211] [2023-11-19 07:47:42,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:42,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:42,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:42,740 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:42,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:47:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:42,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:47:42,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:45,613 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-19 07:47:45,613 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:45,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:45,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41052289] [2023-11-19 07:47:45,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:45,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22359211] [2023-11-19 07:47:45,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22359211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:45,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:45,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:47:45,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720999173] [2023-11-19 07:47:45,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:45,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:47:45,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:45,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:47:45,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=30, Unknown=1, NotChecked=0, Total=42 [2023-11-19 07:47:45,619 INFO L87 Difference]: Start difference. First operand 43 states and 62 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-19 07:47:45,918 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse3 (div (mod c_~var_1_3~0 256) (mod c_~var_1_4~0 256)))) (let ((.cse9 (+ .cse3 1))) (and (let ((.cse0 (mod c_~var_1_7~0 256)) (.cse1 (mod c_~var_1_8~0 256))) (or (and (= c_~var_1_1~0 .cse0) (<= (+ .cse0 1) .cse1)) (and (<= .cse1 .cse0) (= c_~var_1_1~0 .cse1)))) (or (exists ((~var_1_5~0 Int)) (and (exists ((~var_1_6~0 Int)) (let ((.cse2 (div ~var_1_5~0 ~var_1_6~0))) (and (<= (+ ~var_1_6~0 1) 0) (<= |c_ULTIMATE.start_property_#t~nondet12#1| .cse2) (<= .cse2 .cse3)))) (<= 0 ~var_1_5~0))) (exists ((~var_1_5~0 Int)) (and (exists ((~var_1_6~0 Int)) (let ((.cse4 (+ (div ~var_1_5~0 ~var_1_6~0) 1))) (and (<= |c_ULTIMATE.start_property_#t~nondet12#1| .cse4) (<= .cse4 .cse3) (not (= (mod ~var_1_5~0 ~var_1_6~0) 0)) (<= 0 ~var_1_6~0)))) (<= (+ ~var_1_5~0 1) 0))) (exists ((~var_1_5~0 Int) (~var_1_6~0 Int)) (let ((.cse5 (div ~var_1_5~0 ~var_1_6~0))) (and (<= (+ ~var_1_6~0 1) 0) (<= |c_ULTIMATE.start_property_#t~nondet12#1| .cse5) (<= .cse5 .cse3) (= (mod ~var_1_5~0 ~var_1_6~0) 0)))) (exists ((~var_1_5~0 Int)) (and (exists ((~var_1_6~0 Int)) (let ((.cse6 (div ~var_1_5~0 ~var_1_6~0))) (and (<= |c_ULTIMATE.start_property_#t~nondet12#1| .cse6) (<= .cse6 .cse3) (<= 0 ~var_1_6~0)))) (<= 0 ~var_1_5~0))) (exists ((~var_1_5~0 Int) (~var_1_6~0 Int)) (let ((.cse7 (div ~var_1_5~0 ~var_1_6~0))) (and (<= |c_ULTIMATE.start_property_#t~nondet12#1| .cse7) (<= .cse7 .cse3) (= (mod ~var_1_5~0 ~var_1_6~0) 0) (<= 0 ~var_1_6~0)))) (exists ((~var_1_5~0 Int)) (and (<= (+ ~var_1_5~0 1) 0) (exists ((~var_1_6~0 Int)) (let ((.cse8 (div ~var_1_5~0 ~var_1_6~0))) (and (<= (+ ~var_1_6~0 1) 0) (not (= (mod ~var_1_5~0 ~var_1_6~0) 0)) (<= .cse8 .cse9) (<= (+ |c_ULTIMATE.start_property_#t~nondet12#1| 1) .cse8))))))) (let ((.cse12 (div c_~var_1_5~0 c_~var_1_6~0)) (.cse11 (+ c_~var_1_5~0 1)) (.cse10 (= (mod c_~var_1_5~0 c_~var_1_6~0) 0))) (or (and (not .cse10) (<= .cse11 0) (or (< .cse12 .cse3) (and (<= (+ c_~var_1_6~0 1) 0) (<= .cse12 .cse9)))) (and (<= .cse12 .cse3) (or (< 0 .cse11) .cse10))))))) is different from true [2023-11-19 07:47:46,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:46,636 INFO L93 Difference]: Finished difference Result 98 states and 140 transitions. [2023-11-19 07:47:46,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:47:46,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 100 [2023-11-19 07:47:46,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:46,640 INFO L225 Difference]: With dead ends: 98 [2023-11-19 07:47:46,640 INFO L226 Difference]: Without dead ends: 96 [2023-11-19 07:47:46,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=25, Invalid=66, Unknown=3, NotChecked=16, Total=110 [2023-11-19 07:47:46,642 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 38 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:46,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 531 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 26 Unknown, 5 Unchecked, 0.7s Time] [2023-11-19 07:47:46,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-19 07:47:46,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 61. [2023-11-19 07:47:46,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 40 states have (on average 1.2) internal successors, (48), 41 states have internal predecessors, (48), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 07:47:46,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 84 transitions. [2023-11-19 07:47:46,680 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 84 transitions. Word has length 100 [2023-11-19 07:47:46,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:46,681 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 84 transitions. [2023-11-19 07:47:46,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-19 07:47:46,682 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 84 transitions. [2023-11-19 07:47:46,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-19 07:47:46,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:46,685 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:46,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:46,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:46,895 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:46,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:46,896 INFO L85 PathProgramCache]: Analyzing trace with hash 687954328, now seen corresponding path program 1 times [2023-11-19 07:47:46,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:46,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497273535] [2023-11-19 07:47:46,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:46,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:46,952 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:46,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363150068] [2023-11-19 07:47:46,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:46,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:46,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:46,960 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:46,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:47:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:47,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:47:47,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:47,545 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-19 07:47:47,545 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:47,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:47,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497273535] [2023-11-19 07:47:47,546 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:47,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363150068] [2023-11-19 07:47:47,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363150068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:47,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:47,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:47,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323721995] [2023-11-19 07:47:47,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:47,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:47,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:47,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:47,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:47,554 INFO L87 Difference]: Start difference. First operand 61 states and 84 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-19 07:47:47,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:47,638 INFO L93 Difference]: Finished difference Result 132 states and 184 transitions. [2023-11-19 07:47:47,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:47,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 100 [2023-11-19 07:47:47,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:47,644 INFO L225 Difference]: With dead ends: 132 [2023-11-19 07:47:47,644 INFO L226 Difference]: Without dead ends: 74 [2023-11-19 07:47:47,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:47,648 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 33 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:47,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 103 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:47,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-19 07:47:47,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2023-11-19 07:47:47,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 46 states have internal predecessors, (53), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:47:47,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 99 transitions. [2023-11-19 07:47:47,686 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 99 transitions. Word has length 100 [2023-11-19 07:47:47,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:47,689 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 99 transitions. [2023-11-19 07:47:47,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-19 07:47:47,690 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 99 transitions. [2023-11-19 07:47:47,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-19 07:47:47,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:47,693 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:47,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:47,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:47,907 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:47,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:47,907 INFO L85 PathProgramCache]: Analyzing trace with hash -123239340, now seen corresponding path program 1 times [2023-11-19 07:47:47,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:47,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743209002] [2023-11-19 07:47:47,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:47,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:47,948 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:47,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191146954] [2023-11-19 07:47:47,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:47,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:47,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:47,957 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:47,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:47:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:48,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:47:48,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:48,429 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-19 07:47:48,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:48,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:48,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743209002] [2023-11-19 07:47:48,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:48,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191146954] [2023-11-19 07:47:48,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191146954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:48,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:48,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:48,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418816248] [2023-11-19 07:47:48,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:48,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:48,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:48,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:48,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:48,435 INFO L87 Difference]: Start difference. First operand 71 states and 99 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-19 07:47:48,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:48,507 INFO L93 Difference]: Finished difference Result 146 states and 200 transitions. [2023-11-19 07:47:48,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:48,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 100 [2023-11-19 07:47:48,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:48,514 INFO L225 Difference]: With dead ends: 146 [2023-11-19 07:47:48,515 INFO L226 Difference]: Without dead ends: 78 [2023-11-19 07:47:48,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:48,518 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 31 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:48,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 136 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:48,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-19 07:47:48,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 56. [2023-11-19 07:47:48,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:47:48,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 75 transitions. [2023-11-19 07:47:48,532 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 75 transitions. Word has length 100 [2023-11-19 07:47:48,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:48,533 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 75 transitions. [2023-11-19 07:47:48,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-19 07:47:48,534 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 75 transitions. [2023-11-19 07:47:48,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-19 07:47:48,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:48,536 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:48,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:48,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:48,758 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:48,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:48,759 INFO L85 PathProgramCache]: Analyzing trace with hash -121392298, now seen corresponding path program 1 times [2023-11-19 07:47:48,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:48,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418203489] [2023-11-19 07:47:48,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:48,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:48,812 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:48,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212538529] [2023-11-19 07:47:48,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:48,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:48,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:48,817 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:48,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:47:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:47:48,903 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:47:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:47:49,000 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:47:49,000 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:47:49,002 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 07:47:49,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:49,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:49,228 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-19 07:47:49,231 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:47:49,291 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-19 07:47:49,293 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet12 could not be translated [2023-11-19 07:47:49,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:47:49 BoogieIcfgContainer [2023-11-19 07:47:49,324 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:47:49,324 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:47:49,325 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:47:49,325 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:47:49,334 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:41" (3/4) ... [2023-11-19 07:47:49,337 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:47:49,338 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:47:49,339 INFO L158 Benchmark]: Toolchain (without parser) took 9086.94ms. Allocated memory was 184.5MB in the beginning and 237.0MB in the end (delta: 52.4MB). Free memory was 137.7MB in the beginning and 119.3MB in the end (delta: 18.4MB). Peak memory consumption was 74.6MB. Max. memory is 16.1GB. [2023-11-19 07:47:49,339 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 184.5MB. Free memory is still 155.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:47:49,339 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.14ms. Allocated memory is still 184.5MB. Free memory was 137.7MB in the beginning and 125.9MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:47:49,340 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.62ms. Allocated memory is still 184.5MB. Free memory was 125.9MB in the beginning and 123.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:47:49,340 INFO L158 Benchmark]: Boogie Preprocessor took 39.83ms. Allocated memory is still 184.5MB. Free memory was 123.8MB in the beginning and 122.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:47:49,341 INFO L158 Benchmark]: RCFGBuilder took 606.87ms. Allocated memory is still 184.5MB. Free memory was 122.6MB in the beginning and 107.1MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 07:47:49,341 INFO L158 Benchmark]: TraceAbstraction took 8004.44ms. Allocated memory was 184.5MB in the beginning and 237.0MB in the end (delta: 52.4MB). Free memory was 106.2MB in the beginning and 119.3MB in the end (delta: -13.0MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. [2023-11-19 07:47:49,341 INFO L158 Benchmark]: Witness Printer took 13.80ms. Allocated memory is still 237.0MB. Free memory was 119.3MB in the beginning and 119.3MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:47:49,344 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 184.5MB. Free memory is still 155.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 339.14ms. Allocated memory is still 184.5MB. Free memory was 137.7MB in the beginning and 125.9MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.62ms. Allocated memory is still 184.5MB. Free memory was 125.9MB in the beginning and 123.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.83ms. Allocated memory is still 184.5MB. Free memory was 123.8MB in the beginning and 122.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 606.87ms. Allocated memory is still 184.5MB. Free memory was 122.6MB in the beginning and 107.1MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8004.44ms. Allocated memory was 184.5MB in the beginning and 237.0MB in the end (delta: 52.4MB). Free memory was 106.2MB in the beginning and 119.3MB in the end (delta: -13.0MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. * Witness Printer took 13.80ms. Allocated memory is still 237.0MB. Free memory was 119.3MB in the beginning and 119.3MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet12 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of shiftRight at line 71. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 0; [L23] unsigned char var_1_2 = 1; [L24] unsigned char var_1_3 = 128; [L25] unsigned char var_1_4 = 32; [L26] signed long int var_1_5 = 0; [L27] signed long int var_1_6 = 4; [L28] unsigned char var_1_7 = 16; [L29] unsigned char var_1_8 = 10; VAL [isInitial=0, var_1_1=0, var_1_2=1, var_1_3=128, var_1_4=32, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L75] isInitial = 1 [L76] FCALL initially() [L77] COND TRUE 1 [L78] FCALL updateLastVariables() [L79] CALL updateVariables() [L44] var_1_2 = __VERIFIER_nondet_uchar() [L45] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=0, var_1_3=128, var_1_4=32, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_1=0, var_1_3=128, var_1_4=32, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L45] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, var_1_1=0, var_1_3=128, var_1_4=32, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L46] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=128, var_1_4=32, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=128, var_1_4=32, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L46] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, var_1_1=0, var_1_2=0, var_1_3=128, var_1_4=32, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L47] var_1_3 = __VERIFIER_nondet_uchar() [L48] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=32, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=32, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L48] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=32, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L49] CALL assume_abort_if_not(var_1_3 <= 255) VAL [\old(cond)=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=32, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=32, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L49] RET assume_abort_if_not(var_1_3 <= 255) VAL [isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=32, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L50] var_1_4 = __VERIFIER_nondet_uchar() [L51] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L51] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L52] CALL assume_abort_if_not(var_1_4 <= 255) VAL [\old(cond)=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L52] RET assume_abort_if_not(var_1_4 <= 255) VAL [isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L53] CALL assume_abort_if_not(var_1_4 != 0) VAL [\old(cond)=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L53] RET assume_abort_if_not(var_1_4 != 0) VAL [isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=0, var_1_6=4, var_1_7=16, var_1_8=10] [L54] var_1_5 = __VERIFIER_nondet_long() [L55] CALL assume_abort_if_not(var_1_5 >= -2147483648) VAL [\old(cond)=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=4, var_1_7=16, var_1_8=10] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=4, var_1_7=16, var_1_8=10] [L55] RET assume_abort_if_not(var_1_5 >= -2147483648) VAL [isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=4, var_1_7=16, var_1_8=10] [L56] CALL assume_abort_if_not(var_1_5 <= 2147483647) VAL [\old(cond)=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=4, var_1_7=16, var_1_8=10] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=4, var_1_7=16, var_1_8=10] [L56] RET assume_abort_if_not(var_1_5 <= 2147483647) VAL [isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=4, var_1_7=16, var_1_8=10] [L57] var_1_6 = __VERIFIER_nondet_long() [L58] CALL assume_abort_if_not(var_1_6 >= -2147483648) VAL [\old(cond)=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=16, var_1_8=10] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=16, var_1_8=10] [L58] RET assume_abort_if_not(var_1_6 >= -2147483648) VAL [isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=16, var_1_8=10] [L59] CALL assume_abort_if_not(var_1_6 <= 2147483647) VAL [\old(cond)=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=16, var_1_8=10] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=16, var_1_8=10] [L59] RET assume_abort_if_not(var_1_6 <= 2147483647) VAL [isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=16, var_1_8=10] [L60] CALL assume_abort_if_not(var_1_6 != 0) VAL [\old(cond)=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=16, var_1_8=10] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=16, var_1_8=10] [L60] RET assume_abort_if_not(var_1_6 != 0) VAL [isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=16, var_1_8=10] [L61] var_1_7 = __VERIFIER_nondet_uchar() [L62] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=1, var_1_8=10] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=1, var_1_8=10] [L62] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=1, var_1_8=10] [L63] CALL assume_abort_if_not(var_1_7 <= 32) VAL [\old(cond)=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=1, var_1_8=10] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=1, var_1_8=10] [L63] RET assume_abort_if_not(var_1_7 <= 32) VAL [isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=1, var_1_8=10] [L64] var_1_8 = __VERIFIER_nondet_uchar() [L65] CALL assume_abort_if_not(var_1_8 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=1, var_1_8=2] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=1, var_1_8=2] [L65] RET assume_abort_if_not(var_1_8 >= 0) VAL [isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=1, var_1_8=2] [L66] CALL assume_abort_if_not(var_1_8 <= 254) VAL [\old(cond)=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=1, var_1_8=2] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=1, var_1_8=2] [L66] RET assume_abort_if_not(var_1_8 <= 254) VAL [isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=1, var_1_8=2] [L79] RET updateVariables() [L80] CALL step() [L33] EXPR (var_1_5 / var_1_6) >> var_1_7 VAL [isInitial=1, var_1_1=0, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=1, var_1_8=2] [L33] COND TRUE (var_1_3 / var_1_4) >= ((var_1_5 / var_1_6) >> var_1_7) [L34] var_1_1 = ((((var_1_7) < (var_1_8)) ? (var_1_7) : (var_1_8))) VAL [isInitial=1, var_1_1=1, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=1, var_1_8=2] [L80] RET step() [L81] CALL, EXPR property() [L71] EXPR (var_1_5 / var_1_6) >> var_1_7 VAL [isInitial=1, var_1_1=1, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=1, var_1_8=2] [L71-L72] return ((var_1_3 / var_1_4) >= ((var_1_5 / var_1_6) >> var_1_7)) ? (var_1_1 == ((unsigned char) ((((var_1_7) < (var_1_8)) ? (var_1_7) : (var_1_8))))) : (var_1_2 ? (var_1_1 == ((unsigned char) var_1_8)) : (var_1_1 == ((unsigned char) var_1_8))) ; [L81] RET, EXPR property() [L81] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_1=1, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=1, var_1_8=2] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_1=1, var_1_2=0, var_1_3=1, var_1_4=1, var_1_5=7, var_1_6=2, var_1_7=1, var_1_8=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.8s, OverallIterations: 5, TraceHistogramMax: 16, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 mSolverCounterUnknown, 118 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 102 mSDsluCounter, 832 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 5 IncrementalHoareTripleChecker+Unchecked, 507 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 174 IncrementalHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 325 mSDtfsCounter, 174 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 400 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=3, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 60 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 600 NumberOfCodeBlocks, 600 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 396 ConstructedInterpolants, 1 QuantifiedInterpolants, 1186 SizeOfPredicates, 16 NumberOfNonLiveVariables, 912 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 1920/1920 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 07:47:49,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/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_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-29.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/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 7e3b862ba9a2a4c1c92e3db12119deeccd82c1339b8fd16f8352680fc1302c9d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:52,111 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:52,222 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-19 07:47:52,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:52,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:52,259 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:52,260 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:52,261 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:52,262 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:52,262 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:52,263 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:52,264 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:52,265 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:52,265 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:52,266 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:47:52,267 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:52,267 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:52,268 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:52,268 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:47:52,269 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:52,269 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:47:52,270 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:47:52,270 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:47:52,271 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:47:52,271 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:52,271 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:47:52,272 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:52,272 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:52,273 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:52,273 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:52,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:52,274 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:52,275 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:52,275 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:47:52,276 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:47:52,276 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:47:52,276 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:52,277 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:47:52,277 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:52,278 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:52,278 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:47:52,279 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:52,279 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_65d88ce9-a674-4f93-a3f5-fa44105331a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e3b862ba9a2a4c1c92e3db12119deeccd82c1339b8fd16f8352680fc1302c9d [2023-11-19 07:47:52,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:52,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:52,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:52,750 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:52,751 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:52,752 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-29.i [2023-11-19 07:47:55,828 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:47:56,111 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:47:56,111 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-29.i [2023-11-19 07:47:56,119 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/data/28c87322f/55a3b8815f1a47bb83f39d96e45b3b81/FLAGda021473a [2023-11-19 07:47:56,134 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/data/28c87322f/55a3b8815f1a47bb83f39d96e45b3b81 [2023-11-19 07:47:56,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:47:56,139 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:47:56,140 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:56,141 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:47:56,146 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:47:56,147 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:56" (1/1) ... [2023-11-19 07:47:56,148 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d46b56d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:56, skipping insertion in model container [2023-11-19 07:47:56,149 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:56" (1/1) ... [2023-11-19 07:47:56,173 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:56,315 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_65d88ce9-a674-4f93-a3f5-fa44105331a3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-29.i[915,928] [2023-11-19 07:47:56,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:56,365 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:47:56,379 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_65d88ce9-a674-4f93-a3f5-fa44105331a3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-29.i[915,928] [2023-11-19 07:47:56,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:56,413 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:47:56,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:56 WrapperNode [2023-11-19 07:47:56,414 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:56,415 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:56,415 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:47:56,416 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:47:56,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:56" (1/1) ... [2023-11-19 07:47:56,436 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:56" (1/1) ... [2023-11-19 07:47:56,460 INFO L138 Inliner]: procedures = 27, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 84 [2023-11-19 07:47:56,461 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:56,462 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:47:56,462 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:47:56,462 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:47:56,472 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:56" (1/1) ... [2023-11-19 07:47:56,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:56" (1/1) ... [2023-11-19 07:47:56,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:56" (1/1) ... [2023-11-19 07:47:56,477 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:56" (1/1) ... [2023-11-19 07:47:56,486 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:56" (1/1) ... [2023-11-19 07:47:56,498 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:56" (1/1) ... [2023-11-19 07:47:56,500 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:56" (1/1) ... [2023-11-19 07:47:56,502 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:56" (1/1) ... [2023-11-19 07:47:56,506 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:47:56,507 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:47:56,507 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:47:56,507 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:47:56,508 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:56" (1/1) ... [2023-11-19 07:47:56,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:56,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:56,548 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:47:56,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:47:56,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:47:56,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:47:56,601 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:47:56,601 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:47:56,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:47:56,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:47:56,702 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:47:56,705 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:47:57,061 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:47:57,070 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:47:57,070 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:47:57,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:57 BoogieIcfgContainer [2023-11-19 07:47:57,074 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:47:57,077 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:47:57,077 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:47:57,081 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:47:57,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:56" (1/3) ... [2023-11-19 07:47:57,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6643db26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:57, skipping insertion in model container [2023-11-19 07:47:57,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:56" (2/3) ... [2023-11-19 07:47:57,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6643db26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:57, skipping insertion in model container [2023-11-19 07:47:57,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:57" (3/3) ... [2023-11-19 07:47:57,085 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-29.i [2023-11-19 07:47:57,112 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:47:57,112 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:47:57,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:57,176 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;@6c92019b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:57,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:47:57,181 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:47:57,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-19 07:47:57,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:57,196 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:57,197 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:57,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:57,203 INFO L85 PathProgramCache]: Analyzing trace with hash 229598373, now seen corresponding path program 1 times [2023-11-19 07:47:57,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:47:57,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463649125] [2023-11-19 07:47:57,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:57,220 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:47:57,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:47:57,224 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:47:57,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 07:47:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:57,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:47:57,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:57,623 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-11-19 07:47:57,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:57,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:47:57,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463649125] [2023-11-19 07:47:57,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463649125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:57,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:57,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:57,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881253583] [2023-11-19 07:47:57,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:57,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:47:57,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:47:57,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:47:57,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:47:57,668 INFO L87 Difference]: Start difference. First operand has 44 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 07:47:57,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:57,698 INFO L93 Difference]: Finished difference Result 81 states and 138 transitions. [2023-11-19 07:47:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:47:57,700 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 97 [2023-11-19 07:47:57,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:57,708 INFO L225 Difference]: With dead ends: 81 [2023-11-19 07:47:57,708 INFO L226 Difference]: Without dead ends: 40 [2023-11-19 07:47:57,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:47:57,718 INFO L413 NwaCegarLoop]: 57 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, 57 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:57,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:57,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-19 07:47:57,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-19 07:47:57,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:47:57,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 57 transitions. [2023-11-19 07:47:57,786 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 57 transitions. Word has length 97 [2023-11-19 07:47:57,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:57,787 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 57 transitions. [2023-11-19 07:47:57,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 07:47:57,788 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 57 transitions. [2023-11-19 07:47:57,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-19 07:47:57,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:57,797 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:57,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:58,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:47:58,004 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:58,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:58,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1601082203, now seen corresponding path program 1 times [2023-11-19 07:47:58,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:47:58,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37301095] [2023-11-19 07:47:58,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:58,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:47:58,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:47:58,032 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:47:58,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 07:47:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:58,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:47:58,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:00,823 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-19 07:48:00,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:00,824 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:48:00,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37301095] [2023-11-19 07:48:00,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37301095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:00,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:00,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:48:00,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637426107] [2023-11-19 07:48:00,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:00,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:00,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:48:00,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:00,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:00,828 INFO L87 Difference]: Start difference. First operand 40 states and 57 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-19 07:48:04,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:04,142 INFO L93 Difference]: Finished difference Result 79 states and 113 transitions. [2023-11-19 07:48:04,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:48:04,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 97 [2023-11-19 07:48:04,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:04,152 INFO L225 Difference]: With dead ends: 79 [2023-11-19 07:48:04,152 INFO L226 Difference]: Without dead ends: 77 [2023-11-19 07:48:04,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:48:04,155 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 28 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:04,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 318 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-19 07:48:04,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-19 07:48:04,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 52. [2023-11-19 07:48:04,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 31 states have (on average 1.096774193548387) internal successors, (34), 32 states have internal predecessors, (34), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 07:48:04,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 70 transitions. [2023-11-19 07:48:04,174 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 70 transitions. Word has length 97 [2023-11-19 07:48:04,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:04,176 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 70 transitions. [2023-11-19 07:48:04,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-19 07:48:04,176 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 70 transitions. [2023-11-19 07:48:04,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-19 07:48:04,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:04,179 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:04,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-19 07:48:04,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:04,385 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:04,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:04,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1961408050, now seen corresponding path program 1 times [2023-11-19 07:48:04,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:48:04,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454279196] [2023-11-19 07:48:04,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:04,387 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:04,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:48:04,393 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:48:04,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 07:48:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:04,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:48:04,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:06,967 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-19 07:48:06,968 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:06,968 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:48:06,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454279196] [2023-11-19 07:48:06,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454279196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:06,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:06,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:48:06,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109691619] [2023-11-19 07:48:06,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:06,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:48:06,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:48:06,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:48:06,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:48:06,972 INFO L87 Difference]: Start difference. First operand 52 states and 70 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-19 07:48:11,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:11,028 INFO L93 Difference]: Finished difference Result 85 states and 120 transitions. [2023-11-19 07:48:11,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:48:11,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 98 [2023-11-19 07:48:11,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:11,036 INFO L225 Difference]: With dead ends: 85 [2023-11-19 07:48:11,036 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 07:48:11,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:48:11,039 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 28 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:11,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 368 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-19 07:48:11,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 07:48:11,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 07:48:11,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:11,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 07:48:11,042 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 98 [2023-11-19 07:48:11,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:11,042 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:48:11,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-19 07:48:11,043 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:48:11,043 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 07:48:11,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 07:48:11,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:11,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:11,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 07:48:11,518 INFO L899 garLoopResultBuilder]: For program point L60(line 60) no Hoare annotation was computed. [2023-11-19 07:48:11,518 INFO L899 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2023-11-19 07:48:11,518 INFO L902 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: true [2023-11-19 07:48:11,518 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-11-19 07:48:11,518 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-11-19 07:48:11,518 INFO L902 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: true [2023-11-19 07:48:11,518 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2023-11-19 07:48:11,519 INFO L902 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: true [2023-11-19 07:48:11,519 INFO L902 garLoopResultBuilder]: At program point L77-2(lines 77 83) the Hoare annotation is: true [2023-11-19 07:48:11,519 INFO L899 garLoopResultBuilder]: For program point L77-3(lines 77 83) no Hoare annotation was computed. [2023-11-19 07:48:11,519 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 74 85) no Hoare annotation was computed. [2023-11-19 07:48:11,519 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 40) no Hoare annotation was computed. [2023-11-19 07:48:11,519 INFO L899 garLoopResultBuilder]: For program point L36-2(lines 32 42) no Hoare annotation was computed. [2023-11-19 07:48:11,519 INFO L902 garLoopResultBuilder]: At program point L65(line 65) the Hoare annotation is: true [2023-11-19 07:48:11,520 INFO L902 garLoopResultBuilder]: At program point L65-1(line 65) the Hoare annotation is: true [2023-11-19 07:48:11,520 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-19 07:48:11,520 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-19 07:48:11,520 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-19 07:48:11,520 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2023-11-19 07:48:11,521 INFO L899 garLoopResultBuilder]: For program point L49(line 49) no Hoare annotation was computed. [2023-11-19 07:48:11,521 INFO L899 garLoopResultBuilder]: For program point property_returnLabel#1(lines 70 73) no Hoare annotation was computed. [2023-11-19 07:48:11,521 INFO L902 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: true [2023-11-19 07:48:11,521 INFO L902 garLoopResultBuilder]: At program point L45-1(line 45) the Hoare annotation is: true [2023-11-19 07:48:11,521 INFO L899 garLoopResultBuilder]: For program point L66(lines 43 67) no Hoare annotation was computed. [2023-11-19 07:48:11,522 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 41) no Hoare annotation was computed. [2023-11-19 07:48:11,522 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 07:48:11,522 INFO L902 garLoopResultBuilder]: At program point L62(line 62) the Hoare annotation is: true [2023-11-19 07:48:11,522 INFO L902 garLoopResultBuilder]: At program point L62-1(line 62) the Hoare annotation is: true [2023-11-19 07:48:11,522 INFO L902 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: true [2023-11-19 07:48:11,523 INFO L902 garLoopResultBuilder]: At program point L58-1(line 58) the Hoare annotation is: true [2023-11-19 07:48:11,523 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-11-19 07:48:11,523 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 07:48:11,523 INFO L899 garLoopResultBuilder]: For program point L63(line 63) no Hoare annotation was computed. [2023-11-19 07:48:11,523 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 31) no Hoare annotation was computed. [2023-11-19 07:48:11,524 INFO L902 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: true [2023-11-19 07:48:11,524 INFO L902 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: true [2023-11-19 07:48:11,524 INFO L902 garLoopResultBuilder]: At program point L55-1(line 55) the Hoare annotation is: true [2023-11-19 07:48:11,524 INFO L902 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: true [2023-11-19 07:48:11,524 INFO L902 garLoopResultBuilder]: At program point L51-1(line 51) the Hoare annotation is: true [2023-11-19 07:48:11,525 INFO L899 garLoopResultBuilder]: For program point L68(lines 68 69) no Hoare annotation was computed. [2023-11-19 07:48:11,525 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-11-19 07:48:11,525 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-11-19 07:48:11,525 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-11-19 07:48:11,525 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-11-19 07:48:11,529 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 07:48:11,531 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:48:11,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:48:11 BoogieIcfgContainer [2023-11-19 07:48:11,539 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:48:11,540 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:48:11,540 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:48:11,540 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:48:11,541 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:57" (3/4) ... [2023-11-19 07:48:11,543 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:48:11,547 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-19 07:48:11,553 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-19 07:48:11,553 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-19 07:48:11,553 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:48:11,554 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:48:11,664 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:48:11,665 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:48:11,665 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:48:11,666 INFO L158 Benchmark]: Toolchain (without parser) took 15526.97ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 59.6MB in the beginning and 38.1MB in the end (delta: 21.6MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. [2023-11-19 07:48:11,666 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 62.9MB. Free memory was 39.1MB in the beginning and 39.1MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:48:11,667 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.96ms. Allocated memory is still 83.9MB. Free memory was 59.4MB in the beginning and 47.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:48:11,668 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.23ms. Allocated memory is still 83.9MB. Free memory was 47.3MB in the beginning and 45.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:48:11,668 INFO L158 Benchmark]: Boogie Preprocessor took 44.03ms. Allocated memory is still 83.9MB. Free memory was 45.6MB in the beginning and 44.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:48:11,669 INFO L158 Benchmark]: RCFGBuilder took 567.94ms. Allocated memory is still 83.9MB. Free memory was 44.0MB in the beginning and 51.3MB in the end (delta: -7.3MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2023-11-19 07:48:11,669 INFO L158 Benchmark]: TraceAbstraction took 14462.26ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 50.3MB in the beginning and 42.4MB in the end (delta: 7.9MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2023-11-19 07:48:11,670 INFO L158 Benchmark]: Witness Printer took 125.51ms. Allocated memory is still 100.7MB. Free memory was 42.4MB in the beginning and 38.1MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:48:11,673 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 62.9MB. Free memory was 39.1MB in the beginning and 39.1MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.96ms. Allocated memory is still 83.9MB. Free memory was 59.4MB in the beginning and 47.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.23ms. Allocated memory is still 83.9MB. Free memory was 47.3MB in the beginning and 45.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.03ms. Allocated memory is still 83.9MB. Free memory was 45.6MB in the beginning and 44.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 567.94ms. Allocated memory is still 83.9MB. Free memory was 44.0MB in the beginning and 51.3MB in the end (delta: -7.3MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * TraceAbstraction took 14462.26ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 50.3MB in the beginning and 42.4MB in the end (delta: 7.9MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. * Witness Printer took 125.51ms. Allocated memory is still 100.7MB. Free memory was 42.4MB in the beginning and 38.1MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.4s, OverallIterations: 3, TraceHistogramMax: 16, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 84 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56 mSDsluCounter, 743 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 483 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 169 IncrementalHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 260 mSDtfsCounter, 169 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 296 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=2, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 25 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 67 PreInvPairs, 104 NumberOfFragments, 18 HoareAnnotationTreeSize, 67 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 18 FomulaSimplificationsInter, 111 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 292 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 289 ConstructedInterpolants, 0 QuantifiedInterpolants, 361 SizeOfPredicates, 20 NumberOfNonLiveVariables, 460 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1440/1440 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 77]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-11-19 07:48:11,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65d88ce9-a674-4f93-a3f5-fa44105331a3/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE