./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-89.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-89.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b61474e3055b599a740acd844baa39c957b5e0efc678fbcea6f4ee1ccd6cc136 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:14:30,305 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:14:30,376 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:14:30,382 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:14:30,382 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:14:30,410 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:14:30,410 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:14:30,411 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:14:30,412 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:14:30,413 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:14:30,414 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:14:30,415 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:14:30,415 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:14:30,416 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:14:30,417 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:14:30,417 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:14:30,418 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:14:30,419 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:14:30,419 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:14:30,420 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:14:30,421 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:14:30,428 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:14:30,429 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:14:30,429 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:14:30,430 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:14:30,430 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:14:30,431 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:14:30,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:14:30,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:30,432 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:14:30,433 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:14:30,433 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:14:30,434 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:14:30,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:14:30,435 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:14:30,435 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:14:30,437 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:14:30,438 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:14:30,439 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:14:30,439 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_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b61474e3055b599a740acd844baa39c957b5e0efc678fbcea6f4ee1ccd6cc136 [2023-11-06 21:14:30,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:14:30,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:14:30,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:14:30,791 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:14:30,792 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:14:30,793 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-89.i [2023-11-06 21:14:33,906 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:14:34,200 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:14:34,200 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-89.i [2023-11-06 21:14:34,210 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/data/5f8ce98d7/5269e5e198b54149888e7feedbefb9a7/FLAGf6eb3a316 [2023-11-06 21:14:34,227 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/data/5f8ce98d7/5269e5e198b54149888e7feedbefb9a7 [2023-11-06 21:14:34,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:14:34,232 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:14:34,234 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:34,234 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:14:34,242 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:14:34,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e18141f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34, skipping insertion in model container [2023-11-06 21:14:34,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,286 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:14:34,480 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_2754bb45-3174-4934-9d20-df491a74b899/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-89.i[917,930] [2023-11-06 21:14:34,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:34,535 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:14:34,552 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_2754bb45-3174-4934-9d20-df491a74b899/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-89.i[917,930] [2023-11-06 21:14:34,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:34,608 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:14:34,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34 WrapperNode [2023-11-06 21:14:34,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:34,610 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:34,611 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:14:34,611 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:14:34,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,632 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,677 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 144 [2023-11-06 21:14:34,678 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:34,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:14:34,679 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:14:34,679 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:14:34,689 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,693 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,693 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,703 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,707 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,711 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,713 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,717 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:14:34,718 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:14:34,718 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:14:34,719 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:14:34,719 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (1/1) ... [2023-11-06 21:14:34,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:34,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:34,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:34,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:14:34,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:14:34,790 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 21:14:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 21:14:34,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:14:34,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:14:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:14:34,872 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:14:34,874 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:14:35,269 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:14:35,277 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:14:35,278 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 21:14:35,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:35 BoogieIcfgContainer [2023-11-06 21:14:35,280 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:14:35,283 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:14:35,283 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:14:35,286 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:14:35,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:14:34" (1/3) ... [2023-11-06 21:14:35,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41507e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:35, skipping insertion in model container [2023-11-06 21:14:35,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:34" (2/3) ... [2023-11-06 21:14:35,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41507e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:35, skipping insertion in model container [2023-11-06 21:14:35,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:35" (3/3) ... [2023-11-06 21:14:35,290 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_has-floats_file-89.i [2023-11-06 21:14:35,311 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:14:35,312 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:14:35,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:14:35,378 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@160e2fa9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:14:35,378 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:14:35,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 46 states have internal predecessors, (66), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:14:35,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-06 21:14:35,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:35,397 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:35,397 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:35,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:35,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1392838253, now seen corresponding path program 1 times [2023-11-06 21:14:35,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:35,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685691912] [2023-11-06 21:14:35,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:35,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:35,591 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:14:35,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [828613560] [2023-11-06 21:14:35,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:35,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:35,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:35,596 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:35,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:14:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:35,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:14:35,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:14:40,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:14:40,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:40,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685691912] [2023-11-06 21:14:40,347 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:14:40,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828613560] [2023-11-06 21:14:40,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828613560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:40,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:40,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:14:40,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559420472] [2023-11-06 21:14:40,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:40,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:14:40,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:40,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:14:40,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:14:40,391 INFO L87 Difference]: Start difference. First operand has 61 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 46 states have internal predecessors, (66), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:41,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:41,235 INFO L93 Difference]: Finished difference Result 190 states and 319 transitions. [2023-11-06 21:14:41,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:14:41,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 87 [2023-11-06 21:14:41,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:41,255 INFO L225 Difference]: With dead ends: 190 [2023-11-06 21:14:41,256 INFO L226 Difference]: Without dead ends: 132 [2023-11-06 21:14:41,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:14:41,265 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 173 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:41,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 240 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 21:14:41,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-06 21:14:41,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 111. [2023-11-06 21:14:41,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 86 states have (on average 1.4069767441860466) internal successors, (121), 87 states have internal predecessors, (121), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 21:14:41,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 165 transitions. [2023-11-06 21:14:41,374 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 165 transitions. Word has length 87 [2023-11-06 21:14:41,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:41,377 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 165 transitions. [2023-11-06 21:14:41,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:41,377 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 165 transitions. [2023-11-06 21:14:41,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-06 21:14:41,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:41,384 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:41,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 21:14:41,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 21:14:41,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:41,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:41,591 INFO L85 PathProgramCache]: Analyzing trace with hash 2072896623, now seen corresponding path program 1 times [2023-11-06 21:14:41,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:41,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518627246] [2023-11-06 21:14:41,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:41,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:41,657 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:14:41,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209218317] [2023-11-06 21:14:41,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:41,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:41,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:41,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:41,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:14:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:41,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:14:41,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:45,063 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:14:45,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:14:45,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:45,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518627246] [2023-11-06 21:14:45,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:14:45,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209218317] [2023-11-06 21:14:45,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209218317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:45,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:45,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:14:45,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451336905] [2023-11-06 21:14:45,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:45,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:14:45,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:45,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:14:45,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:14:45,070 INFO L87 Difference]: Start difference. First operand 111 states and 165 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:45,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:45,843 INFO L93 Difference]: Finished difference Result 240 states and 352 transitions. [2023-11-06 21:14:45,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:14:45,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 87 [2023-11-06 21:14:45,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:45,850 INFO L225 Difference]: With dead ends: 240 [2023-11-06 21:14:45,850 INFO L226 Difference]: Without dead ends: 132 [2023-11-06 21:14:45,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:14:45,853 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 128 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:45,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 299 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 21:14:45,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-06 21:14:45,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 101. [2023-11-06 21:14:45,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 76 states have (on average 1.368421052631579) internal successors, (104), 77 states have internal predecessors, (104), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 21:14:45,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 148 transitions. [2023-11-06 21:14:45,874 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 148 transitions. Word has length 87 [2023-11-06 21:14:45,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:45,875 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 148 transitions. [2023-11-06 21:14:45,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:45,875 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 148 transitions. [2023-11-06 21:14:45,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-06 21:14:45,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:45,877 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:45,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:46,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:46,083 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:46,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:46,084 INFO L85 PathProgramCache]: Analyzing trace with hash 2093902831, now seen corresponding path program 1 times [2023-11-06 21:14:46,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:46,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818379343] [2023-11-06 21:14:46,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:46,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:46,116 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:14:46,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407178340] [2023-11-06 21:14:46,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:46,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:46,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:46,118 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:46,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:14:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:46,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:14:46,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:14:46,694 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:14:46,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:46,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818379343] [2023-11-06 21:14:46,695 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:14:46,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407178340] [2023-11-06 21:14:46,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407178340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:46,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:46,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 21:14:46,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034367681] [2023-11-06 21:14:46,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:46,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:14:46,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:46,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:14:46,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:14:46,699 INFO L87 Difference]: Start difference. First operand 101 states and 148 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:47,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:47,052 INFO L93 Difference]: Finished difference Result 228 states and 333 transitions. [2023-11-06 21:14:47,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:14:47,053 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 87 [2023-11-06 21:14:47,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:47,056 INFO L225 Difference]: With dead ends: 228 [2023-11-06 21:14:47,056 INFO L226 Difference]: Without dead ends: 130 [2023-11-06 21:14:47,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:14:47,059 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 138 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:47,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 343 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:14:47,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-06 21:14:47,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 111. [2023-11-06 21:14:47,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 87 states have internal predecessors, (120), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 21:14:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 164 transitions. [2023-11-06 21:14:47,082 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 164 transitions. Word has length 87 [2023-11-06 21:14:47,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:47,083 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 164 transitions. [2023-11-06 21:14:47,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:47,083 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 164 transitions. [2023-11-06 21:14:47,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-06 21:14:47,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:47,086 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:47,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:47,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-06 21:14:47,294 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:47,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:47,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1521006095, now seen corresponding path program 1 times [2023-11-06 21:14:47,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:47,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180974187] [2023-11-06 21:14:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:47,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:47,325 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:14:47,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404793174] [2023-11-06 21:14:47,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:47,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:47,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:47,335 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:47,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:14:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:47,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:14:47,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:47,861 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:14:47,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:14:47,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:47,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180974187] [2023-11-06 21:14:47,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:14:47,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404793174] [2023-11-06 21:14:47,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404793174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:47,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:47,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 21:14:47,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100352293] [2023-11-06 21:14:47,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:47,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:14:47,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:47,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:14:47,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:14:47,866 INFO L87 Difference]: Start difference. First operand 111 states and 164 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:48,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:48,144 INFO L93 Difference]: Finished difference Result 238 states and 348 transitions. [2023-11-06 21:14:48,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:14:48,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 87 [2023-11-06 21:14:48,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:48,148 INFO L225 Difference]: With dead ends: 238 [2023-11-06 21:14:48,148 INFO L226 Difference]: Without dead ends: 130 [2023-11-06 21:14:48,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:14:48,150 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 110 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:48,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 412 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:14:48,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-06 21:14:48,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 101. [2023-11-06 21:14:48,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 76 states have (on average 1.355263157894737) internal successors, (103), 77 states have internal predecessors, (103), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 21:14:48,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 147 transitions. [2023-11-06 21:14:48,171 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 147 transitions. Word has length 87 [2023-11-06 21:14:48,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:48,172 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 147 transitions. [2023-11-06 21:14:48,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:48,173 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 147 transitions. [2023-11-06 21:14:48,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-06 21:14:48,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:48,175 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:48,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:48,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:48,381 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:48,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:48,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1464857895, now seen corresponding path program 1 times [2023-11-06 21:14:48,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:48,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990969734] [2023-11-06 21:14:48,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:48,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:48,407 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:14:48,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1276879823] [2023-11-06 21:14:48,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:48,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:48,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:48,409 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:48,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 21:14:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:48,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 21:14:48,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:48,851 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 96 proven. 30 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-06 21:14:48,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:14:49,109 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:14:49,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:49,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990969734] [2023-11-06 21:14:49,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:14:49,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276879823] [2023-11-06 21:14:49,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276879823] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:14:49,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:14:49,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-11-06 21:14:49,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151548406] [2023-11-06 21:14:49,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:49,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:14:49,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:49,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:14:49,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-11-06 21:14:49,117 INFO L87 Difference]: Start difference. First operand 101 states and 147 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:49,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:49,561 INFO L93 Difference]: Finished difference Result 198 states and 295 transitions. [2023-11-06 21:14:49,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 21:14:49,562 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 89 [2023-11-06 21:14:49,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:49,564 INFO L225 Difference]: With dead ends: 198 [2023-11-06 21:14:49,564 INFO L226 Difference]: Without dead ends: 196 [2023-11-06 21:14:49,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2023-11-06 21:14:49,566 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 143 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:49,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 370 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:14:49,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-06 21:14:49,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 109. [2023-11-06 21:14:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 84 states have (on average 1.3214285714285714) internal successors, (111), 85 states have internal predecessors, (111), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 21:14:49,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 155 transitions. [2023-11-06 21:14:49,595 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 155 transitions. Word has length 89 [2023-11-06 21:14:49,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:49,596 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 155 transitions. [2023-11-06 21:14:49,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:49,596 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 155 transitions. [2023-11-06 21:14:49,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-06 21:14:49,598 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:49,598 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:49,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:49,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:49,804 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:49,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:49,805 INFO L85 PathProgramCache]: Analyzing trace with hash 331186694, now seen corresponding path program 1 times [2023-11-06 21:14:49,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:49,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980153353] [2023-11-06 21:14:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:49,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:49,847 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:14:49,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823165560] [2023-11-06 21:14:49,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:49,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:49,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:49,868 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:49,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 21:14:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:49,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:14:49,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:50,046 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:14:50,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:14:50,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:50,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980153353] [2023-11-06 21:14:50,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:14:50,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823165560] [2023-11-06 21:14:50,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823165560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:50,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:50,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:14:50,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467619003] [2023-11-06 21:14:50,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:50,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:14:50,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:50,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:14:50,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:14:50,050 INFO L87 Difference]: Start difference. First operand 109 states and 155 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:50,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:50,119 INFO L93 Difference]: Finished difference Result 227 states and 321 transitions. [2023-11-06 21:14:50,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:14:50,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 91 [2023-11-06 21:14:50,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:50,123 INFO L225 Difference]: With dead ends: 227 [2023-11-06 21:14:50,123 INFO L226 Difference]: Without dead ends: 121 [2023-11-06 21:14:50,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:14:50,125 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 7 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:50,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 144 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:14:50,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-06 21:14:50,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2023-11-06 21:14:50,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 90 states have (on average 1.3) internal successors, (117), 91 states have internal predecessors, (117), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 21:14:50,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 161 transitions. [2023-11-06 21:14:50,149 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 161 transitions. Word has length 91 [2023-11-06 21:14:50,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:50,149 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 161 transitions. [2023-11-06 21:14:50,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:50,150 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 161 transitions. [2023-11-06 21:14:50,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-06 21:14:50,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:50,152 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:50,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:50,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:50,358 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:50,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1753538749, now seen corresponding path program 1 times [2023-11-06 21:14:50,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:50,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198124232] [2023-11-06 21:14:50,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:50,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:50,388 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:14:50,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1874903661] [2023-11-06 21:14:50,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:50,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:50,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:50,389 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:50,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 21:14:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:50,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 21:14:50,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:50,830 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 63 proven. 63 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-06 21:14:50,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:14:51,161 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:14:51,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:51,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198124232] [2023-11-06 21:14:51,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:14:51,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874903661] [2023-11-06 21:14:51,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874903661] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:14:51,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:14:51,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 19 [2023-11-06 21:14:51,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617452569] [2023-11-06 21:14:51,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:51,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 21:14:51,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:51,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 21:14:51,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-11-06 21:14:51,165 INFO L87 Difference]: Start difference. First operand 115 states and 161 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:51,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:51,772 INFO L93 Difference]: Finished difference Result 216 states and 313 transitions. [2023-11-06 21:14:51,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 21:14:51,772 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-11-06 21:14:51,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:51,775 INFO L225 Difference]: With dead ends: 216 [2023-11-06 21:14:51,775 INFO L226 Difference]: Without dead ends: 214 [2023-11-06 21:14:51,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2023-11-06 21:14:51,777 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 167 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:51,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 406 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 21:14:51,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-06 21:14:51,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 117. [2023-11-06 21:14:51,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 92 states have (on average 1.2934782608695652) internal successors, (119), 93 states have internal predecessors, (119), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 21:14:51,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 163 transitions. [2023-11-06 21:14:51,815 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 163 transitions. Word has length 92 [2023-11-06 21:14:51,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:51,816 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 163 transitions. [2023-11-06 21:14:51,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:51,816 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 163 transitions. [2023-11-06 21:14:51,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 21:14:51,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:51,818 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:51,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:52,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:52,024 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:52,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:52,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1908839435, now seen corresponding path program 1 times [2023-11-06 21:14:52,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:52,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410404330] [2023-11-06 21:14:52,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:52,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:52,045 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:14:52,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457446158] [2023-11-06 21:14:52,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:52,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:52,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:52,047 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:52,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 21:14:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:52,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:14:52,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:52,169 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:14:52,170 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:14:52,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:52,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410404330] [2023-11-06 21:14:52,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:14:52,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457446158] [2023-11-06 21:14:52,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457446158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:52,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:52,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:14:52,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011077449] [2023-11-06 21:14:52,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:52,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:14:52,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:52,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:14:52,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:14:52,174 INFO L87 Difference]: Start difference. First operand 117 states and 163 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:52,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:52,244 INFO L93 Difference]: Finished difference Result 281 states and 389 transitions. [2023-11-06 21:14:52,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:14:52,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2023-11-06 21:14:52,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:52,246 INFO L225 Difference]: With dead ends: 281 [2023-11-06 21:14:52,246 INFO L226 Difference]: Without dead ends: 167 [2023-11-06 21:14:52,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:14:52,248 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 31 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:52,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 154 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:14:52,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-11-06 21:14:52,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 165. [2023-11-06 21:14:52,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 124 states have (on average 1.2338709677419355) internal successors, (153), 127 states have internal predecessors, (153), 36 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 33 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-06 21:14:52,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 225 transitions. [2023-11-06 21:14:52,296 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 225 transitions. Word has length 94 [2023-11-06 21:14:52,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:52,297 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 225 transitions. [2023-11-06 21:14:52,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:52,297 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 225 transitions. [2023-11-06 21:14:52,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-06 21:14:52,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:52,303 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:52,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:52,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:52,509 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:52,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:52,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1072875547, now seen corresponding path program 1 times [2023-11-06 21:14:52,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:52,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3785383] [2023-11-06 21:14:52,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:52,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:52,539 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:14:52,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [578165185] [2023-11-06 21:14:52,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:52,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:52,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:52,551 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:52,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 21:14:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:52,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 21:14:52,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:52,713 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 156 proven. 12 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-06 21:14:52,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:14:52,829 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-06 21:14:52,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:52,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3785383] [2023-11-06 21:14:52,830 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:14:52,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578165185] [2023-11-06 21:14:52,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578165185] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:14:52,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:14:52,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 21:14:52,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520074175] [2023-11-06 21:14:52,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 21:14:52,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:14:52,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:52,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:14:52,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:14:52,838 INFO L87 Difference]: Start difference. First operand 165 states and 225 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-06 21:14:53,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:53,006 INFO L93 Difference]: Finished difference Result 305 states and 404 transitions. [2023-11-06 21:14:53,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:14:53,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 95 [2023-11-06 21:14:53,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:53,007 INFO L225 Difference]: With dead ends: 305 [2023-11-06 21:14:53,007 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 21:14:53,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:14:53,009 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 57 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:53,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 97 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:14:53,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 21:14:53,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 21:14:53,010 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) [2023-11-06 21:14:53,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 21:14:53,011 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 95 [2023-11-06 21:14:53,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:53,011 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:14:53,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-06 21:14:53,012 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 21:14:53,012 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 21:14:53,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 21:14:53,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:53,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:53,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-06 21:14:57,563 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 62) no Hoare annotation was computed. [2023-11-06 21:14:57,563 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-11-06 21:14:57,563 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-11-06 21:14:57,564 INFO L895 garLoopResultBuilder]: At program point L19-3(line 19) the Hoare annotation is: (let ((.cse0 (= (mod ~var_1_14~0 65536) (mod ~var_1_8~0 65536))) (.cse1 (= ~var_1_13~0 ~var_1_10~0)) (.cse2 (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0))) (.cse14 (<= (mod ~var_1_7~0 256) 0)) (.cse15 (= (mod ~var_1_15~0 65536) (mod ~var_1_3~0 256)))) (or (and .cse0 .cse1 .cse2 (let ((.cse13 (<= (+ ~var_1_10~0 4) ~var_1_9~0)) (.cse10 (+ 256 ~var_1_8~0)) (.cse12 (mod ~var_1_10~0 256))) (let ((.cse6 (<= 128 .cse12)) (.cse4 (and .cse13 (= .cse10 .cse12))) (.cse8 (and .cse13 (= ~var_1_8~0 .cse12))) (.cse7 (<= .cse12 127)) (.cse9 (<= ~var_1_9~0 (+ 3 ~var_1_10~0))) (.cse3 (mod (+ 252 ~var_1_9~0) 256))) (or (and (<= 128 .cse3) (let ((.cse5 (and .cse9 (= .cse10 .cse3)))) (or (and (or .cse4 .cse5) .cse6) (and .cse7 (or .cse5 .cse8))))) (and (let ((.cse11 (and (= ~var_1_8~0 .cse3) .cse9))) (or (and .cse6 (or .cse11 .cse4)) (and (or .cse11 .cse8) .cse7))) (<= .cse3 127))))) .cse14 .cse15) (and (<= (mod ~last_1_var_1_14~0 65536) (mod ~last_1_var_1_15~0 65536)) .cse0 .cse1 .cse2 .cse14 .cse15))) [2023-11-06 21:14:57,564 INFO L902 garLoopResultBuilder]: At program point L77(line 77) the Hoare annotation is: true [2023-11-06 21:14:57,564 INFO L902 garLoopResultBuilder]: At program point L77-1(line 77) the Hoare annotation is: true [2023-11-06 21:14:57,564 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 48) no Hoare annotation was computed. [2023-11-06 21:14:57,565 INFO L899 garLoopResultBuilder]: For program point L44-2(lines 44 48) no Hoare annotation was computed. [2023-11-06 21:14:57,565 INFO L895 garLoopResultBuilder]: At program point main_returnLabel#1(lines 94 105) the Hoare annotation is: false [2023-11-06 21:14:57,565 INFO L899 garLoopResultBuilder]: For program point L69(line 69) no Hoare annotation was computed. [2023-11-06 21:14:57,565 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2023-11-06 21:14:57,565 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-06 21:14:57,565 INFO L899 garLoopResultBuilder]: For program point L86(lines 86 89) no Hoare annotation was computed. [2023-11-06 21:14:57,565 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 61) no Hoare annotation was computed. [2023-11-06 21:14:57,565 INFO L899 garLoopResultBuilder]: For program point L78(line 78) no Hoare annotation was computed. [2023-11-06 21:14:57,565 INFO L899 garLoopResultBuilder]: For program point L54(line 54) no Hoare annotation was computed. [2023-11-06 21:14:57,565 INFO L899 garLoopResultBuilder]: For program point L54-2(line 54) no Hoare annotation was computed. [2023-11-06 21:14:57,565 INFO L899 garLoopResultBuilder]: For program point L54-4(line 54) no Hoare annotation was computed. [2023-11-06 21:14:57,565 INFO L899 garLoopResultBuilder]: For program point L54-6(lines 54 58) no Hoare annotation was computed. [2023-11-06 21:14:57,566 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-06 21:14:57,566 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-11-06 21:14:57,566 INFO L895 garLoopResultBuilder]: At program point L71-1(line 71) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-11-06 21:14:57,566 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 64) no Hoare annotation was computed. [2023-11-06 21:14:57,566 INFO L895 garLoopResultBuilder]: At program point L80(line 80) the Hoare annotation is: (<= (mod ~var_1_7~0 256) 0) [2023-11-06 21:14:57,566 INFO L895 garLoopResultBuilder]: At program point L80-1(line 80) the Hoare annotation is: (<= (mod ~var_1_7~0 256) 0) [2023-11-06 21:14:57,566 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2023-11-06 21:14:57,567 INFO L895 garLoopResultBuilder]: At program point L97-2(lines 97 103) the Hoare annotation is: (let ((.cse0 (<= (mod ~var_1_7~0 256) 0))) (or (and (<= (mod ~last_1_var_1_14~0 65536) (mod ~last_1_var_1_15~0 65536)) .cse0) (and (= (mod ~var_1_14~0 65536) (mod ~var_1_8~0 65536)) (= ~var_1_13~0 ~var_1_10~0) (let ((.cse11 (<= (+ ~var_1_10~0 4) ~var_1_9~0)) (.cse8 (+ 256 ~var_1_8~0)) (.cse10 (mod ~var_1_10~0 256))) (let ((.cse4 (<= 128 .cse10)) (.cse2 (and .cse11 (= .cse8 .cse10))) (.cse6 (and .cse11 (= ~var_1_8~0 .cse10))) (.cse5 (<= .cse10 127)) (.cse7 (<= ~var_1_9~0 (+ 3 ~var_1_10~0))) (.cse1 (mod (+ 252 ~var_1_9~0) 256))) (or (and (<= 128 .cse1) (let ((.cse3 (and .cse7 (= .cse8 .cse1)))) (or (and (or .cse2 .cse3) .cse4) (and .cse5 (or .cse3 .cse6))))) (and (let ((.cse9 (and (= ~var_1_8~0 .cse1) .cse7))) (or (and .cse4 (or .cse9 .cse2)) (and (or .cse9 .cse6) .cse5))) (<= .cse1 127))))) .cse0 (= (mod ~var_1_15~0 65536) (mod ~var_1_3~0 256))))) [2023-11-06 21:14:57,567 INFO L899 garLoopResultBuilder]: For program point L97-3(lines 97 103) no Hoare annotation was computed. [2023-11-06 21:14:57,567 INFO L899 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2023-11-06 21:14:57,567 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2023-11-06 21:14:57,567 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2023-11-06 21:14:57,567 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-06 21:14:57,576 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-06 21:14:57,576 INFO L895 garLoopResultBuilder]: At program point property_returnLabel#1(lines 90 93) the Hoare annotation is: (let ((.cse0 (= (mod ~var_1_14~0 65536) (mod ~var_1_8~0 65536))) (.cse1 (not (= |ULTIMATE.start_property_#res#1| 0))) (.cse2 (= ~var_1_13~0 ~var_1_10~0)) (.cse14 (<= (mod ~var_1_7~0 256) 0)) (.cse15 (= (mod ~var_1_15~0 65536) (mod ~var_1_3~0 256)))) (or (and .cse0 .cse1 .cse2 (let ((.cse13 (<= (+ ~var_1_10~0 4) ~var_1_9~0)) (.cse10 (+ 256 ~var_1_8~0)) (.cse12 (mod ~var_1_10~0 256))) (let ((.cse6 (<= 128 .cse12)) (.cse4 (and .cse13 (= .cse10 .cse12))) (.cse8 (and .cse13 (= ~var_1_8~0 .cse12))) (.cse7 (<= .cse12 127)) (.cse9 (<= ~var_1_9~0 (+ 3 ~var_1_10~0))) (.cse3 (mod (+ 252 ~var_1_9~0) 256))) (or (and (<= 128 .cse3) (let ((.cse5 (and .cse9 (= .cse10 .cse3)))) (or (and (or .cse4 .cse5) .cse6) (and .cse7 (or .cse5 .cse8))))) (and (let ((.cse11 (and (= ~var_1_8~0 .cse3) .cse9))) (or (and .cse6 (or .cse11 .cse4)) (and (or .cse11 .cse8) .cse7))) (<= .cse3 127))))) .cse14 .cse15) (and (<= (mod ~last_1_var_1_14~0 65536) (mod ~last_1_var_1_15~0 65536)) .cse0 .cse1 .cse2 .cse14 .cse15))) [2023-11-06 21:14:57,576 INFO L895 garLoopResultBuilder]: At program point L74(line 74) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-11-06 21:14:57,576 INFO L895 garLoopResultBuilder]: At program point L74-1(line 74) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-11-06 21:14:57,577 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-06 21:14:57,577 INFO L899 garLoopResultBuilder]: For program point L91(line 91) no Hoare annotation was computed. [2023-11-06 21:14:57,577 INFO L899 garLoopResultBuilder]: For program point L91-1(line 91) no Hoare annotation was computed. [2023-11-06 21:14:57,577 INFO L899 garLoopResultBuilder]: For program point L91-2(line 91) no Hoare annotation was computed. [2023-11-06 21:14:57,577 INFO L899 garLoopResultBuilder]: For program point L91-3(line 91) no Hoare annotation was computed. [2023-11-06 21:14:57,577 INFO L899 garLoopResultBuilder]: For program point L91-4(line 91) no Hoare annotation was computed. [2023-11-06 21:14:57,577 INFO L899 garLoopResultBuilder]: For program point L91-6(line 91) no Hoare annotation was computed. [2023-11-06 21:14:57,577 INFO L895 garLoopResultBuilder]: At program point L83(line 83) the Hoare annotation is: (<= (mod ~var_1_7~0 256) 0) [2023-11-06 21:14:57,577 INFO L899 garLoopResultBuilder]: For program point L91-8(line 91) no Hoare annotation was computed. [2023-11-06 21:14:57,577 INFO L895 garLoopResultBuilder]: At program point L83-1(line 83) the Hoare annotation is: (<= (mod ~var_1_7~0 256) 0) [2023-11-06 21:14:57,578 INFO L899 garLoopResultBuilder]: For program point L91-10(line 91) no Hoare annotation was computed. [2023-11-06 21:14:57,578 INFO L899 garLoopResultBuilder]: For program point L91-12(line 91) no Hoare annotation was computed. [2023-11-06 21:14:57,578 INFO L899 garLoopResultBuilder]: For program point L91-14(line 91) no Hoare annotation was computed. [2023-11-06 21:14:57,578 INFO L899 garLoopResultBuilder]: For program point L75(line 75) no Hoare annotation was computed. [2023-11-06 21:14:57,578 INFO L899 garLoopResultBuilder]: For program point L91-16(line 91) no Hoare annotation was computed. [2023-11-06 21:14:57,578 INFO L899 garLoopResultBuilder]: For program point L91-18(line 91) no Hoare annotation was computed. [2023-11-06 21:14:57,578 INFO L895 garLoopResultBuilder]: At program point L67(line 67) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-11-06 21:14:57,578 INFO L895 garLoopResultBuilder]: At program point L67-1(line 67) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-11-06 21:14:57,578 INFO L899 garLoopResultBuilder]: For program point L84(lines 65 85) no Hoare annotation was computed. [2023-11-06 21:14:57,578 INFO L899 garLoopResultBuilder]: For program point L51(lines 51 63) no Hoare annotation was computed. [2023-11-06 21:14:57,578 INFO L895 garLoopResultBuilder]: At program point L68(line 68) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-11-06 21:14:57,579 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-11-06 21:14:57,579 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-11-06 21:14:57,579 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-11-06 21:14:57,579 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-11-06 21:14:57,584 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:57,587 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:14:57,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:14:57 BoogieIcfgContainer [2023-11-06 21:14:57,639 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:14:57,640 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:14:57,640 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:14:57,640 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:14:57,641 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:35" (3/4) ... [2023-11-06 21:14:57,643 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 21:14:57,649 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-06 21:14:57,661 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-06 21:14:57,662 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 21:14:57,662 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 21:14:57,663 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 21:14:57,702 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((var_1_14 % 65536) == (var_1_8 % 65536)) && !((\result == 0))) && (var_1_13 == var_1_10)) && (((128 <= ((252 + var_1_9) % 256)) && ((((((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))) || ((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256)))) && (128 <= (var_1_10 % 256))) || (((var_1_10 % 256) <= 127) && (((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256))))))) || ((((128 <= (var_1_10 % 256)) && (((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))))) || ((((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256)))) && ((var_1_10 % 256) <= 127))) && (((252 + var_1_9) % 256) <= 127)))) && ((var_1_7 % 256) <= 0)) && ((var_1_15 % 65536) == (var_1_3 % 256))) || (((((((last_1_var_1_14 % 65536) <= (last_1_var_1_15 % 65536)) && ((var_1_14 % 65536) == (var_1_8 % 65536))) && !((\result == 0))) && (var_1_13 == var_1_10)) && ((var_1_7 % 256) <= 0)) && ((var_1_15 % 65536) == (var_1_3 % 256)))) [2023-11-06 21:14:57,751 WARN L115 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((var_1_14 % 65536) == (var_1_8 % 65536)) && !((\result == 0))) && (var_1_13 == var_1_10)) && (((128 <= ((252 + var_1_9) % 256)) && ((((((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))) || ((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256)))) && (128 <= (var_1_10 % 256))) || (((var_1_10 % 256) <= 127) && (((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256))))))) || ((((128 <= (var_1_10 % 256)) && (((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))))) || ((((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256)))) && ((var_1_10 % 256) <= 127))) && (((252 + var_1_9) % 256) <= 127)))) && ((var_1_7 % 256) <= 0)) && ((var_1_15 % 65536) == (var_1_3 % 256))) || (((((((last_1_var_1_14 % 65536) <= (last_1_var_1_15 % 65536)) && ((var_1_14 % 65536) == (var_1_8 % 65536))) && !((\result == 0))) && (var_1_13 == var_1_10)) && ((var_1_7 % 256) <= 0)) && ((var_1_15 % 65536) == (var_1_3 % 256)))) [2023-11-06 21:14:57,772 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 21:14:57,772 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 21:14:57,773 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:14:57,773 INFO L158 Benchmark]: Toolchain (without parser) took 23541.52ms. Allocated memory was 138.4MB in the beginning and 385.9MB in the end (delta: 247.5MB). Free memory was 108.4MB in the beginning and 310.6MB in the end (delta: -202.2MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. [2023-11-06 21:14:57,774 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 138.4MB. Free memory is still 94.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:14:57,774 INFO L158 Benchmark]: CACSL2BoogieTranslator took 376.02ms. Allocated memory is still 138.4MB. Free memory was 108.4MB in the beginning and 95.7MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 21:14:57,774 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.28ms. Allocated memory is still 138.4MB. Free memory was 95.7MB in the beginning and 92.7MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 21:14:57,775 INFO L158 Benchmark]: Boogie Preprocessor took 39.07ms. Allocated memory is still 138.4MB. Free memory was 92.7MB in the beginning and 91.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:14:57,776 INFO L158 Benchmark]: RCFGBuilder took 562.32ms. Allocated memory is still 138.4MB. Free memory was 91.0MB in the beginning and 71.7MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 21:14:57,776 INFO L158 Benchmark]: TraceAbstraction took 22356.31ms. Allocated memory was 138.4MB in the beginning and 385.9MB in the end (delta: 247.5MB). Free memory was 71.3MB in the beginning and 315.9MB in the end (delta: -244.5MB). Peak memory consumption was 194.4MB. Max. memory is 16.1GB. [2023-11-06 21:14:57,777 INFO L158 Benchmark]: Witness Printer took 133.09ms. Allocated memory is still 385.9MB. Free memory was 315.9MB in the beginning and 310.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 21:14:57,779 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 138.4MB. Free memory is still 94.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 376.02ms. Allocated memory is still 138.4MB. Free memory was 108.4MB in the beginning and 95.7MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.28ms. Allocated memory is still 138.4MB. Free memory was 95.7MB in the beginning and 92.7MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.07ms. Allocated memory is still 138.4MB. Free memory was 92.7MB in the beginning and 91.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 562.32ms. Allocated memory is still 138.4MB. Free memory was 91.0MB in the beginning and 71.7MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 22356.31ms. Allocated memory was 138.4MB in the beginning and 385.9MB in the end (delta: 247.5MB). Free memory was 71.3MB in the beginning and 315.9MB in the end (delta: -244.5MB). Peak memory consumption was 194.4MB. Max. memory is 16.1GB. * Witness Printer took 133.09ms. Allocated memory is still 385.9MB. Free memory was 315.9MB in the beginning and 310.6MB in the end (delta: 5.2MB). 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, 61 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.2s, OverallIterations: 9, TraceHistogramMax: 13, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 961 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 954 mSDsluCounter, 2465 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1653 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1263 IncrementalHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 812 mSDtfsCounter, 1263 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1105 GetRequests, 1023 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=8, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 292 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 212 PreInvPairs, 260 NumberOfFragments, 673 HoareAnnotationTreeSize, 212 FomulaSimplifications, 43819 FormulaSimplificationTreeSizeReduction, 2.2s HoareSimplificationTime, 18 FomulaSimplificationsInter, 17891 FormulaSimplificationTreeSizeReductionInter, 2.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 809 NumberOfCodeBlocks, 809 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1073 ConstructedInterpolants, 0 QuantifiedInterpolants, 4729 SizeOfPredicates, 67 NumberOfNonLiveVariables, 2023 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 3627/3744 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: 94]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: ((((((((var_1_14 % 65536) == (var_1_8 % 65536)) && !((\result == 0))) && (var_1_13 == var_1_10)) && (((128 <= ((252 + var_1_9) % 256)) && ((((((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))) || ((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256)))) && (128 <= (var_1_10 % 256))) || (((var_1_10 % 256) <= 127) && (((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256))))))) || ((((128 <= (var_1_10 % 256)) && (((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))))) || ((((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256)))) && ((var_1_10 % 256) <= 127))) && (((252 + var_1_9) % 256) <= 127)))) && ((var_1_7 % 256) <= 0)) && ((var_1_15 % 65536) == (var_1_3 % 256))) || (((((((last_1_var_1_14 % 65536) <= (last_1_var_1_15 % 65536)) && ((var_1_14 % 65536) == (var_1_8 % 65536))) && !((\result == 0))) && (var_1_13 == var_1_10)) && ((var_1_7 % 256) <= 0)) && ((var_1_15 % 65536) == (var_1_3 % 256)))) - InvariantResult [Line: 97]: Loop Invariant Derived loop invariant: ((((last_1_var_1_14 % 65536) <= (last_1_var_1_15 % 65536)) && ((var_1_7 % 256) <= 0)) || ((((((var_1_14 % 65536) == (var_1_8 % 65536)) && (var_1_13 == var_1_10)) && (((128 <= ((252 + var_1_9) % 256)) && ((((((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))) || ((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256)))) && (128 <= (var_1_10 % 256))) || (((var_1_10 % 256) <= 127) && (((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256))))))) || ((((128 <= (var_1_10 % 256)) && (((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))))) || ((((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256)))) && ((var_1_10 % 256) <= 127))) && (((252 + var_1_9) % 256) <= 127)))) && ((var_1_7 % 256) <= 0)) && ((var_1_15 % 65536) == (var_1_3 % 256)))) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((((((((var_1_14 % 65536) == (var_1_8 % 65536)) && (var_1_13 == var_1_10)) && !((cond == 0))) && (((128 <= ((252 + var_1_9) % 256)) && ((((((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))) || ((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256)))) && (128 <= (var_1_10 % 256))) || (((var_1_10 % 256) <= 127) && (((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256))))))) || ((((128 <= (var_1_10 % 256)) && (((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))))) || ((((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256)))) && ((var_1_10 % 256) <= 127))) && (((252 + var_1_9) % 256) <= 127)))) && ((var_1_7 % 256) <= 0)) && ((var_1_15 % 65536) == (var_1_3 % 256))) || (((((((last_1_var_1_14 % 65536) <= (last_1_var_1_15 % 65536)) && ((var_1_14 % 65536) == (var_1_8 % 65536))) && (var_1_13 == var_1_10)) && !((cond == 0))) && ((var_1_7 % 256) <= 0)) && ((var_1_15 % 65536) == (var_1_3 % 256)))) RESULT: Ultimate proved your program to be correct! [2023-11-06 21:14:57,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2754bb45-3174-4934-9d20-df491a74b899/bin/uautomizer-verify-WvqO1wxjHP/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