./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-81.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6d1c02b3372a206bee55669628072c3bed3eaa07fdec8b30d7cf878b8d085487 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:33:15,711 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:33:15,784 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:33:15,790 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:33:15,791 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:33:15,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:33:15,837 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:33:15,838 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:33:15,840 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:33:15,845 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:33:15,847 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:33:15,848 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:33:15,848 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:33:15,850 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:33:15,851 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:33:15,852 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:33:15,852 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:33:15,853 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:33:15,853 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:33:15,854 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:33:15,854 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:33:15,855 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:33:15,855 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:33:15,856 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:33:15,856 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:33:15,857 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:33:15,858 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:33:15,858 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:33:15,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:33:15,860 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:33:15,861 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:33:15,861 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:33:15,862 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:33:15,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:33:15,862 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:33:15,863 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:33:15,863 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:33:15,864 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:33:15,864 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:33:15,864 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_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d1c02b3372a206bee55669628072c3bed3eaa07fdec8b30d7cf878b8d085487 [2023-11-12 02:33:16,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:33:16,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:33:16,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:33:16,258 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:33:16,259 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:33:16,261 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-81.i [2023-11-12 02:33:19,556 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:33:19,801 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:33:19,802 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-81.i [2023-11-12 02:33:19,814 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/data/1b495ec43/589b7eee73984e3e97c6ab23bece25be/FLAGa50ca8aa8 [2023-11-12 02:33:19,831 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/data/1b495ec43/589b7eee73984e3e97c6ab23bece25be [2023-11-12 02:33:19,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:33:19,836 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:33:19,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:33:19,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:33:19,845 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:33:19,846 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:33:19" (1/1) ... [2023-11-12 02:33:19,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ed744e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:19, skipping insertion in model container [2023-11-12 02:33:19,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:33:19" (1/1) ... [2023-11-12 02:33:19,888 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:33:20,098 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_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-81.i[915,928] [2023-11-12 02:33:20,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:33:20,207 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:33:20,230 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_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-81.i[915,928] [2023-11-12 02:33:20,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:33:20,307 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:33:20,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:20 WrapperNode [2023-11-12 02:33:20,308 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:33:20,309 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:33:20,309 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:33:20,310 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:33:20,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:20" (1/1) ... [2023-11-12 02:33:20,333 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:20" (1/1) ... [2023-11-12 02:33:20,386 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 181 [2023-11-12 02:33:20,386 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:33:20,387 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:33:20,387 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:33:20,387 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:33:20,399 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:20" (1/1) ... [2023-11-12 02:33:20,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:20" (1/1) ... [2023-11-12 02:33:20,404 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:20" (1/1) ... [2023-11-12 02:33:20,404 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:20" (1/1) ... [2023-11-12 02:33:20,421 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:20" (1/1) ... [2023-11-12 02:33:20,425 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:20" (1/1) ... [2023-11-12 02:33:20,429 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:20" (1/1) ... [2023-11-12 02:33:20,432 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:20" (1/1) ... [2023-11-12 02:33:20,439 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:33:20,440 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:33:20,441 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:33:20,441 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:33:20,442 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:20" (1/1) ... [2023-11-12 02:33:20,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:33:20,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:20,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:33:20,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:33:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:33:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:33:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:33:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:33:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:33:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:33:20,661 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:33:20,664 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:33:21,324 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:33:21,331 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:33:21,333 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:33:21,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:33:21 BoogieIcfgContainer [2023-11-12 02:33:21,336 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:33:21,339 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:33:21,339 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:33:21,343 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:33:21,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:33:19" (1/3) ... [2023-11-12 02:33:21,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563770c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:33:21, skipping insertion in model container [2023-11-12 02:33:21,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:20" (2/3) ... [2023-11-12 02:33:21,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563770c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:33:21, skipping insertion in model container [2023-11-12 02:33:21,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:33:21" (3/3) ... [2023-11-12 02:33:21,347 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-81.i [2023-11-12 02:33:21,368 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:33:21,368 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:33:21,432 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:33:21,442 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@14a8bb44, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:33:21,442 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:33:21,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 46 states have (on average 1.391304347826087) internal successors, (64), 47 states have internal predecessors, (64), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-12 02:33:21,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-12 02:33:21,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:33:21,470 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:21,471 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:33:21,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:21,479 INFO L85 PathProgramCache]: Analyzing trace with hash -319097942, now seen corresponding path program 1 times [2023-11-12 02:33:21,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:21,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547205106] [2023-11-12 02:33:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:21,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:21,776 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:33:21,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612753876] [2023-11-12 02:33:21,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:21,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:21,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:21,783 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:33:21,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:33:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:22,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 02:33:22,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:33:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 610 proven. 117 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2023-11-12 02:33:23,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:33:23,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 27 proven. 120 refuted. 0 times theorem prover too weak. 1153 trivial. 0 not checked. [2023-11-12 02:33:23,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:23,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547205106] [2023-11-12 02:33:23,652 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:33:23,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612753876] [2023-11-12 02:33:23,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612753876] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:33:23,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:33:23,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-12 02:33:23,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770523982] [2023-11-12 02:33:23,658 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:33:23,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-12 02:33:23,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:23,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-12 02:33:23,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:33:23,726 INFO L87 Difference]: Start difference. First operand has 75 states, 46 states have (on average 1.391304347826087) internal successors, (64), 47 states have internal predecessors, (64), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 5 states have call successors, (51), 3 states have call predecessors, (51), 7 states have return successors, (52), 4 states have call predecessors, (52), 5 states have call successors, (52) [2023-11-12 02:33:24,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:33:24,955 INFO L93 Difference]: Finished difference Result 240 states and 413 transitions. [2023-11-12 02:33:24,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-12 02:33:24,959 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 5 states have call successors, (51), 3 states have call predecessors, (51), 7 states have return successors, (52), 4 states have call predecessors, (52), 5 states have call successors, (52) Word has length 163 [2023-11-12 02:33:24,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:33:24,978 INFO L225 Difference]: With dead ends: 240 [2023-11-12 02:33:24,978 INFO L226 Difference]: Without dead ends: 168 [2023-11-12 02:33:24,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=340, Invalid=782, Unknown=0, NotChecked=0, Total=1122 [2023-11-12 02:33:24,989 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 348 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:33:24,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 315 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 02:33:25,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-12 02:33:25,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 120. [2023-11-12 02:33:25,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 79 states have internal predecessors, (98), 36 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-12 02:33:25,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 170 transitions. [2023-11-12 02:33:25,064 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 170 transitions. Word has length 163 [2023-11-12 02:33:25,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:33:25,066 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 170 transitions. [2023-11-12 02:33:25,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 5 states have call successors, (51), 3 states have call predecessors, (51), 7 states have return successors, (52), 4 states have call predecessors, (52), 5 states have call successors, (52) [2023-11-12 02:33:25,067 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 170 transitions. [2023-11-12 02:33:25,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-12 02:33:25,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:33:25,071 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:25,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:33:25,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 02:33:25,288 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:33:25,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:25,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1110446480, now seen corresponding path program 1 times [2023-11-12 02:33:25,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:25,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001425297] [2023-11-12 02:33:25,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:25,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:25,358 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:33:25,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741007529] [2023-11-12 02:33:25,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:25,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:25,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:25,360 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:33:25,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:33:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:25,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 02:33:25,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:33:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 585 proven. 51 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2023-11-12 02:33:25,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:33:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 24 proven. 51 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-11-12 02:33:26,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:26,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001425297] [2023-11-12 02:33:26,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:33:26,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741007529] [2023-11-12 02:33:26,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741007529] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:33:26,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:33:26,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2023-11-12 02:33:26,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258529073] [2023-11-12 02:33:26,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:33:26,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:33:26,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:26,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:33:26,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:33:26,071 INFO L87 Difference]: Start difference. First operand 120 states and 170 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2023-11-12 02:33:26,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:33:26,878 INFO L93 Difference]: Finished difference Result 326 states and 455 transitions. [2023-11-12 02:33:26,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-12 02:33:26,879 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 164 [2023-11-12 02:33:26,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:33:26,885 INFO L225 Difference]: With dead ends: 326 [2023-11-12 02:33:26,885 INFO L226 Difference]: Without dead ends: 209 [2023-11-12 02:33:26,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2023-11-12 02:33:26,889 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 150 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:33:26,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 425 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 02:33:26,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-12 02:33:26,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 162. [2023-11-12 02:33:26,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 103 states have (on average 1.174757281553398) internal successors, (121), 105 states have internal predecessors, (121), 47 states have call successors, (47), 11 states have call predecessors, (47), 11 states have return successors, (47), 45 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-12 02:33:26,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 215 transitions. [2023-11-12 02:33:26,979 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 215 transitions. Word has length 164 [2023-11-12 02:33:26,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:33:26,981 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 215 transitions. [2023-11-12 02:33:26,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2023-11-12 02:33:26,982 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 215 transitions. [2023-11-12 02:33:26,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-12 02:33:26,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:33:26,993 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:27,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:33:27,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:27,202 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:33:27,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:27,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1286110825, now seen corresponding path program 1 times [2023-11-12 02:33:27,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:27,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800615494] [2023-11-12 02:33:27,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:27,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:27,282 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:33:27,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164150816] [2023-11-12 02:33:27,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:27,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:27,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:27,285 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:33:27,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:33:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:27,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 02:33:27,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:33:28,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-12 02:33:28,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:33:28,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-11-12 02:33:28,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:28,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800615494] [2023-11-12 02:33:28,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:33:28,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164150816] [2023-11-12 02:33:28,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164150816] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:33:28,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:33:28,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-11-12 02:33:28,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518326154] [2023-11-12 02:33:28,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:33:28,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-12 02:33:28,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:28,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-12 02:33:28,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:33:28,898 INFO L87 Difference]: Start difference. First operand 162 states and 215 transitions. Second operand has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) [2023-11-12 02:33:30,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:33:30,916 INFO L93 Difference]: Finished difference Result 435 states and 588 transitions. [2023-11-12 02:33:30,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-12 02:33:30,917 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) Word has length 165 [2023-11-12 02:33:30,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:33:30,922 INFO L225 Difference]: With dead ends: 435 [2023-11-12 02:33:30,922 INFO L226 Difference]: Without dead ends: 310 [2023-11-12 02:33:30,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=432, Invalid=1128, Unknown=0, NotChecked=0, Total=1560 [2023-11-12 02:33:30,925 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 714 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:33:30,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 430 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-12 02:33:30,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-12 02:33:31,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 244. [2023-11-12 02:33:31,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 154 states have (on average 1.155844155844156) internal successors, (178), 156 states have internal predecessors, (178), 73 states have call successors, (73), 16 states have call predecessors, (73), 16 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-12 02:33:31,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 324 transitions. [2023-11-12 02:33:31,004 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 324 transitions. Word has length 165 [2023-11-12 02:33:31,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:33:31,005 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 324 transitions. [2023-11-12 02:33:31,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) [2023-11-12 02:33:31,006 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 324 transitions. [2023-11-12 02:33:31,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-12 02:33:31,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:33:31,009 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:31,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:33:31,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:31,216 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:33:31,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:31,217 INFO L85 PathProgramCache]: Analyzing trace with hash 265042471, now seen corresponding path program 1 times [2023-11-12 02:33:31,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:31,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585808364] [2023-11-12 02:33:31,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:31,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:31,269 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:33:31,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542859474] [2023-11-12 02:33:31,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:31,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:33:31,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:31,280 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:33:31,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:33:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:31,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-12 02:33:31,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:33:47,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 52 proven. 144 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-11-12 02:33:47,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:33:57,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-12 02:33:57,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:57,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585808364] [2023-11-12 02:33:57,013 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:33:57,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542859474] [2023-11-12 02:33:57,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542859474] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:33:57,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:33:57,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 24 [2023-11-12 02:33:57,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719650827] [2023-11-12 02:33:57,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:57,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:33:57,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:57,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:33:57,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2023-11-12 02:33:57,017 INFO L87 Difference]: Start difference. First operand 244 states and 324 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-12 02:34:03,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:34:03,029 INFO L93 Difference]: Finished difference Result 524 states and 679 transitions. [2023-11-12 02:34:03,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:34:03,032 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 165 [2023-11-12 02:34:03,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:34:03,037 INFO L225 Difference]: With dead ends: 524 [2023-11-12 02:34:03,037 INFO L226 Difference]: Without dead ends: 361 [2023-11-12 02:34:03,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=249, Invalid=941, Unknown=0, NotChecked=0, Total=1190 [2023-11-12 02:34:03,040 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 254 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:34:03,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 496 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-12 02:34:03,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-11-12 02:34:03,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 262. [2023-11-12 02:34:03,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 172 states have (on average 1.1744186046511629) internal successors, (202), 174 states have internal predecessors, (202), 73 states have call successors, (73), 16 states have call predecessors, (73), 16 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-12 02:34:03,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 348 transitions. [2023-11-12 02:34:03,103 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 348 transitions. Word has length 165 [2023-11-12 02:34:03,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:34:03,104 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 348 transitions. [2023-11-12 02:34:03,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-12 02:34:03,105 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 348 transitions. [2023-11-12 02:34:03,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-12 02:34:03,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:34:03,107 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:34:03,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:34:03,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:34:03,316 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:34:03,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:34:03,317 INFO L85 PathProgramCache]: Analyzing trace with hash 523207909, now seen corresponding path program 1 times [2023-11-12 02:34:03,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:34:03,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167450208] [2023-11-12 02:34:03,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:03,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:34:03,362 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:34:03,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1397602488] [2023-11-12 02:34:03,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:03,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:34:03,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:34:03,370 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:34:03,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:34:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:03,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:34:03,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:34:03,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-12 02:34:03,537 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:34:03,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:34:03,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167450208] [2023-11-12 02:34:03,537 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:34:03,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397602488] [2023-11-12 02:34:03,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397602488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:34:03,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:34:03,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:34:03,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063803377] [2023-11-12 02:34:03,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:34:03,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:34:03,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:34:03,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:34:03,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:34:03,541 INFO L87 Difference]: Start difference. First operand 262 states and 348 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-12 02:34:03,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:34:03,657 INFO L93 Difference]: Finished difference Result 537 states and 694 transitions. [2023-11-12 02:34:03,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:34:03,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 165 [2023-11-12 02:34:03,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:34:03,661 INFO L225 Difference]: With dead ends: 537 [2023-11-12 02:34:03,662 INFO L226 Difference]: Without dead ends: 360 [2023-11-12 02:34:03,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:34:03,664 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 30 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:34:03,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 207 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:34:03,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-11-12 02:34:03,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 355. [2023-11-12 02:34:03,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 246 states have (on average 1.1544715447154472) internal successors, (284), 251 states have internal predecessors, (284), 85 states have call successors, (85), 23 states have call predecessors, (85), 23 states have return successors, (85), 80 states have call predecessors, (85), 85 states have call successors, (85) [2023-11-12 02:34:03,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 454 transitions. [2023-11-12 02:34:03,740 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 454 transitions. Word has length 165 [2023-11-12 02:34:03,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:34:03,741 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 454 transitions. [2023-11-12 02:34:03,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-12 02:34:03,741 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 454 transitions. [2023-11-12 02:34:03,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-12 02:34:03,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:34:03,744 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:34:03,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:34:03,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:34:03,951 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:34:03,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:34:03,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1251799453, now seen corresponding path program 1 times [2023-11-12 02:34:03,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:34:03,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263289271] [2023-11-12 02:34:03,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:03,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:34:03,977 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:34:03,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1656058097] [2023-11-12 02:34:03,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:03,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:34:03,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:34:03,979 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:34:04,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:34:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:04,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:34:04,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:34:04,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-12 02:34:04,158 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:34:04,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:34:04,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263289271] [2023-11-12 02:34:04,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:34:04,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656058097] [2023-11-12 02:34:04,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656058097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:34:04,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:34:04,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:34:04,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664308428] [2023-11-12 02:34:04,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:34:04,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:34:04,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:34:04,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:34:04,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:34:04,162 INFO L87 Difference]: Start difference. First operand 355 states and 454 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-12 02:34:04,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:34:04,350 INFO L93 Difference]: Finished difference Result 628 states and 798 transitions. [2023-11-12 02:34:04,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:34:04,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 165 [2023-11-12 02:34:04,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:34:04,354 INFO L225 Difference]: With dead ends: 628 [2023-11-12 02:34:04,354 INFO L226 Difference]: Without dead ends: 382 [2023-11-12 02:34:04,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:34:04,356 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 67 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:34:04,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 291 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:34:04,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-11-12 02:34:04,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 306. [2023-11-12 02:34:04,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 212 states have (on average 1.150943396226415) internal successors, (244), 214 states have internal predecessors, (244), 73 states have call successors, (73), 20 states have call predecessors, (73), 20 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-12 02:34:04,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 390 transitions. [2023-11-12 02:34:04,418 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 390 transitions. Word has length 165 [2023-11-12 02:34:04,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:34:04,419 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 390 transitions. [2023-11-12 02:34:04,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-12 02:34:04,420 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 390 transitions. [2023-11-12 02:34:04,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-12 02:34:04,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:34:04,422 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:34:04,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:34:04,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-12 02:34:04,629 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:34:04,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:34:04,629 INFO L85 PathProgramCache]: Analyzing trace with hash -321763543, now seen corresponding path program 1 times [2023-11-12 02:34:04,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:34:04,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592973248] [2023-11-12 02:34:04,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:04,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:34:04,653 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:34:04,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1909106056] [2023-11-12 02:34:04,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:04,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:34:04,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:34:04,656 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:34:04,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbe4b6e-6024-4bda-8a36-bbf2df4444da/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:34:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:04,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-12 02:34:04,974 INFO L285 TraceCheckSpWp]: Computing forward predicates...