./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-58.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/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_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-58.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/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_7e730381-f85c-43b7-93b2-fd23816b8eb0/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 5be1985e273f5c8eee31a67418035a8392c7bd6f53e92cf10ee992185aae91b7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:44:20,218 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:44:20,296 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:44:20,301 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:44:20,302 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:44:20,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:44:20,332 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:44:20,333 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:44:20,334 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:44:20,335 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:44:20,337 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:44:20,338 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:44:20,338 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:44:20,343 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:44:20,344 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:44:20,345 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:44:20,346 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:44:20,347 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:44:20,347 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:44:20,347 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:44:20,348 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:44:20,348 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:44:20,349 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:44:20,351 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:44:20,351 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:44:20,352 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:44:20,352 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:44:20,353 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:44:20,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:44:20,354 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:44:20,355 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:44:20,355 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:44:20,356 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:44:20,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:44:20,356 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:44:20,356 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:44:20,357 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:44:20,357 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:44:20,357 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:44:20,357 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_7e730381-f85c-43b7-93b2-fd23816b8eb0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5be1985e273f5c8eee31a67418035a8392c7bd6f53e92cf10ee992185aae91b7 [2023-11-06 22:44:20,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:44:20,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:44:20,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:44:20,646 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:44:20,647 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:44:20,648 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-58.i [2023-11-06 22:44:23,754 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:44:24,156 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:44:24,157 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-58.i [2023-11-06 22:44:24,176 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/data/37bca43f1/ddf073f8b55a43b79615e65b4ea9ac4d/FLAG9c6548574 [2023-11-06 22:44:24,194 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/data/37bca43f1/ddf073f8b55a43b79615e65b4ea9ac4d [2023-11-06 22:44:24,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:44:24,203 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:44:24,208 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:44:24,209 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:44:24,215 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:44:24,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:24" (1/1) ... [2023-11-06 22:44:24,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49fc35fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24, skipping insertion in model container [2023-11-06 22:44:24,219 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:24" (1/1) ... [2023-11-06 22:44:24,287 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:44:24,490 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_7e730381-f85c-43b7-93b2-fd23816b8eb0/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-58.i[916,929] [2023-11-06 22:44:24,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:44:24,751 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:44:24,768 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_7e730381-f85c-43b7-93b2-fd23816b8eb0/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-58.i[916,929] [2023-11-06 22:44:24,947 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:44:24,980 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:44:24,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24 WrapperNode [2023-11-06 22:44:24,981 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:44:24,982 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:44:24,983 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:44:24,983 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:44:24,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2023-11-06 22:44:25,018 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2023-11-06 22:44:25,188 INFO L138 Inliner]: procedures = 26, calls = 119, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 839 [2023-11-06 22:44:25,189 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:44:25,190 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:44:25,190 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:44:25,190 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:44:25,200 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2023-11-06 22:44:25,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2023-11-06 22:44:25,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2023-11-06 22:44:25,218 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2023-11-06 22:44:25,251 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2023-11-06 22:44:25,260 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2023-11-06 22:44:25,266 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2023-11-06 22:44:25,274 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2023-11-06 22:44:25,287 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:44:25,288 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:44:25,288 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:44:25,288 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:44:25,289 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (1/1) ... [2023-11-06 22:44:25,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:44:25,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:25,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:44:25,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:44:25,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:44:25,391 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:44:25,391 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:44:25,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:44:25,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:44:25,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:44:25,600 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:44:25,602 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:44:26,930 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:44:26,947 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:44:26,947 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:44:26,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:26 BoogieIcfgContainer [2023-11-06 22:44:26,951 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:44:26,956 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:44:26,956 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:44:26,961 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:44:26,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:24" (1/3) ... [2023-11-06 22:44:26,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5775022b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:26, skipping insertion in model container [2023-11-06 22:44:26,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24" (2/3) ... [2023-11-06 22:44:26,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5775022b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:26, skipping insertion in model container [2023-11-06 22:44:26,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:26" (3/3) ... [2023-11-06 22:44:26,965 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-58.i [2023-11-06 22:44:26,984 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:44:26,985 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:44:27,057 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:44:27,064 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;@d30af02, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:44:27,065 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:44:27,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 333 states, 224 states have (on average 1.6339285714285714) internal successors, (366), 225 states have internal predecessors, (366), 106 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) [2023-11-06 22:44:27,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2023-11-06 22:44:27,132 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:27,134 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:27,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:27,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:27,140 INFO L85 PathProgramCache]: Analyzing trace with hash -428967094, now seen corresponding path program 1 times [2023-11-06 22:44:27,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:27,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264115168] [2023-11-06 22:44:27,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:27,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:27,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:27,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264115168] [2023-11-06 22:44:27,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:44:27,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297154633] [2023-11-06 22:44:27,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:27,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:27,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:27,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:27,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:44:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:28,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:44:28,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:28,413 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 22050 trivial. 0 not checked. [2023-11-06 22:44:28,413 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:28,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297154633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:28,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:28,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:44:28,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229938435] [2023-11-06 22:44:28,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:28,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:44:28,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:28,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:44:28,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:44:28,468 INFO L87 Difference]: Start difference. First operand has 333 states, 224 states have (on average 1.6339285714285714) internal successors, (366), 225 states have internal predecessors, (366), 106 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) Second operand has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 2 states have call successors, (106), 2 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 2 states have call successors, (106) [2023-11-06 22:44:28,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:28,550 INFO L93 Difference]: Finished difference Result 659 states and 1256 transitions. [2023-11-06 22:44:28,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:44:28,553 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 2 states have call successors, (106), 2 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 2 states have call successors, (106) Word has length 683 [2023-11-06 22:44:28,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:28,566 INFO L225 Difference]: With dead ends: 659 [2023-11-06 22:44:28,566 INFO L226 Difference]: Without dead ends: 329 [2023-11-06 22:44:28,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:44:28,578 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:28,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:28,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-11-06 22:44:28,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2023-11-06 22:44:28,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 221 states have (on average 1.6199095022624435) internal successors, (358), 221 states have internal predecessors, (358), 106 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) [2023-11-06 22:44:28,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 570 transitions. [2023-11-06 22:44:28,770 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 570 transitions. Word has length 683 [2023-11-06 22:44:28,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:28,771 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 570 transitions. [2023-11-06 22:44:28,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 2 states have call successors, (106), 2 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 2 states have call successors, (106) [2023-11-06 22:44:28,772 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 570 transitions. [2023-11-06 22:44:28,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2023-11-06 22:44:28,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:28,807 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:28,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:29,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:44:29,017 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:29,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:29,018 INFO L85 PathProgramCache]: Analyzing trace with hash 72086914, now seen corresponding path program 1 times [2023-11-06 22:44:29,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:29,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928970795] [2023-11-06 22:44:29,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:29,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:29,220 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:29,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [460848045] [2023-11-06 22:44:29,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:29,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:29,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:29,226 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:29,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:44:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:29,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:44:29,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22260 trivial. 0 not checked. [2023-11-06 22:44:29,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:29,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:29,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928970795] [2023-11-06 22:44:29,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:29,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460848045] [2023-11-06 22:44:29,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460848045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:29,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:29,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:44:29,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623780618] [2023-11-06 22:44:29,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:29,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:29,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:29,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:29,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:29,819 INFO L87 Difference]: Start difference. First operand 329 states and 570 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-11-06 22:44:30,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:30,036 INFO L93 Difference]: Finished difference Result 960 states and 1663 transitions. [2023-11-06 22:44:30,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:30,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) Word has length 683 [2023-11-06 22:44:30,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:30,055 INFO L225 Difference]: With dead ends: 960 [2023-11-06 22:44:30,056 INFO L226 Difference]: Without dead ends: 634 [2023-11-06 22:44:30,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 681 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 22:44:30,060 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 527 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:30,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 1078 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:44:30,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2023-11-06 22:44:30,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 332. [2023-11-06 22:44:30,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 224 states have (on average 1.6205357142857142) internal successors, (363), 224 states have internal predecessors, (363), 106 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) [2023-11-06 22:44:30,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 575 transitions. [2023-11-06 22:44:30,160 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 575 transitions. Word has length 683 [2023-11-06 22:44:30,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:30,164 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 575 transitions. [2023-11-06 22:44:30,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-11-06 22:44:30,165 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 575 transitions. [2023-11-06 22:44:30,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2023-11-06 22:44:30,173 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:30,174 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:30,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:30,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:30,382 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:30,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:30,383 INFO L85 PathProgramCache]: Analyzing trace with hash 358384781, now seen corresponding path program 1 times [2023-11-06 22:44:30,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:30,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094034504] [2023-11-06 22:44:30,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:30,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:30,527 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:30,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470819631] [2023-11-06 22:44:30,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:30,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:30,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:30,533 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:30,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:44:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:31,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:44:31,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:31,569 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 10912 proven. 0 refuted. 0 times theorem prover too weak. 11348 trivial. 0 not checked. [2023-11-06 22:44:31,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:31,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:31,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094034504] [2023-11-06 22:44:31,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:31,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470819631] [2023-11-06 22:44:31,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470819631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:31,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:31,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:31,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676148679] [2023-11-06 22:44:31,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:31,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:31,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:31,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:31,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:31,581 INFO L87 Difference]: Start difference. First operand 332 states and 575 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2023-11-06 22:44:31,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:31,667 INFO L93 Difference]: Finished difference Result 661 states and 1147 transitions. [2023-11-06 22:44:31,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:44:31,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) Word has length 683 [2023-11-06 22:44:31,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:31,673 INFO L225 Difference]: With dead ends: 661 [2023-11-06 22:44:31,673 INFO L226 Difference]: Without dead ends: 332 [2023-11-06 22:44:31,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 680 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:31,676 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 424 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:31,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1102 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:31,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-11-06 22:44:31,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2023-11-06 22:44:31,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 224 states have (on average 1.6160714285714286) internal successors, (362), 224 states have internal predecessors, (362), 106 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) [2023-11-06 22:44:31,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 574 transitions. [2023-11-06 22:44:31,714 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 574 transitions. Word has length 683 [2023-11-06 22:44:31,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:31,716 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 574 transitions. [2023-11-06 22:44:31,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2023-11-06 22:44:31,717 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 574 transitions. [2023-11-06 22:44:31,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2023-11-06 22:44:31,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:31,725 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:31,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:31,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-06 22:44:31,937 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:31,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:31,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1975007857, now seen corresponding path program 1 times [2023-11-06 22:44:31,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:31,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549727851] [2023-11-06 22:44:31,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:31,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:32,063 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:32,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406703376] [2023-11-06 22:44:32,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:32,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:32,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:32,066 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:32,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:44:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:32,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:44:32,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:32,654 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22260 trivial. 0 not checked. [2023-11-06 22:44:32,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:32,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:32,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549727851] [2023-11-06 22:44:32,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:32,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406703376] [2023-11-06 22:44:32,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406703376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:32,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:32,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:44:32,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182961326] [2023-11-06 22:44:32,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:32,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:32,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:32,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:32,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:32,660 INFO L87 Difference]: Start difference. First operand 332 states and 574 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-11-06 22:44:32,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:32,763 INFO L93 Difference]: Finished difference Result 988 states and 1712 transitions. [2023-11-06 22:44:32,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:32,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) Word has length 683 [2023-11-06 22:44:32,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:32,771 INFO L225 Difference]: With dead ends: 988 [2023-11-06 22:44:32,772 INFO L226 Difference]: Without dead ends: 659 [2023-11-06 22:44:32,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 681 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 22:44:32,778 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 553 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:32,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 1459 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:32,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-11-06 22:44:32,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 657. [2023-11-06 22:44:32,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 442 states have (on average 1.6085972850678734) internal successors, (711), 442 states have internal predecessors, (711), 212 states have call successors, (212), 2 states have call predecessors, (212), 2 states have return successors, (212), 212 states have call predecessors, (212), 212 states have call successors, (212) [2023-11-06 22:44:32,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1135 transitions. [2023-11-06 22:44:32,909 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1135 transitions. Word has length 683 [2023-11-06 22:44:32,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:32,913 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 1135 transitions. [2023-11-06 22:44:32,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-11-06 22:44:32,914 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1135 transitions. [2023-11-06 22:44:32,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2023-11-06 22:44:32,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:32,922 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:32,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:33,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:33,131 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:33,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:33,132 INFO L85 PathProgramCache]: Analyzing trace with hash -240903407, now seen corresponding path program 1 times [2023-11-06 22:44:33,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:33,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147053879] [2023-11-06 22:44:33,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:33,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:33,228 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:33,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960946127] [2023-11-06 22:44:33,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:33,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:33,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:33,230 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:33,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:44:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:33,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:44:33,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:34,721 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22260 trivial. 0 not checked. [2023-11-06 22:44:34,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:34,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:34,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147053879] [2023-11-06 22:44:34,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:34,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960946127] [2023-11-06 22:44:34,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960946127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:34,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:34,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:44:34,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062818826] [2023-11-06 22:44:34,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:34,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:34,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:34,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:34,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:34,727 INFO L87 Difference]: Start difference. First operand 657 states and 1135 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-11-06 22:44:34,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:34,834 INFO L93 Difference]: Finished difference Result 1965 states and 3399 transitions. [2023-11-06 22:44:34,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:34,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) Word has length 683 [2023-11-06 22:44:34,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:34,847 INFO L225 Difference]: With dead ends: 1965 [2023-11-06 22:44:34,848 INFO L226 Difference]: Without dead ends: 1311 [2023-11-06 22:44:34,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 681 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 22:44:34,852 INFO L413 NwaCegarLoop]: 644 mSDtfsCounter, 236 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:34,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 1202 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:34,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2023-11-06 22:44:35,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1309. [2023-11-06 22:44:35,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 880 states have (on average 1.6090909090909091) internal successors, (1416), 880 states have internal predecessors, (1416), 424 states have call successors, (424), 4 states have call predecessors, (424), 4 states have return successors, (424), 424 states have call predecessors, (424), 424 states have call successors, (424) [2023-11-06 22:44:35,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 2264 transitions. [2023-11-06 22:44:35,123 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 2264 transitions. Word has length 683 [2023-11-06 22:44:35,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:35,125 INFO L495 AbstractCegarLoop]: Abstraction has 1309 states and 2264 transitions. [2023-11-06 22:44:35,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-11-06 22:44:35,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 2264 transitions. [2023-11-06 22:44:35,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2023-11-06 22:44:35,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:35,134 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:35,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:35,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:35,351 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:35,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:35,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1441529804, now seen corresponding path program 1 times [2023-11-06 22:44:35,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:35,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295942490] [2023-11-06 22:44:35,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:35,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:35,445 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:35,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749588720] [2023-11-06 22:44:35,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:35,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:35,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:35,447 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:35,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:44:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:35,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:44:35,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22260 trivial. 0 not checked. [2023-11-06 22:44:36,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:36,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:36,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295942490] [2023-11-06 22:44:36,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:36,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749588720] [2023-11-06 22:44:36,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749588720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:36,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:36,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:44:36,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894047968] [2023-11-06 22:44:36,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:36,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:36,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:36,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:36,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:36,050 INFO L87 Difference]: Start difference. First operand 1309 states and 2264 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-11-06 22:44:36,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:36,265 INFO L93 Difference]: Finished difference Result 3917 states and 6778 transitions. [2023-11-06 22:44:36,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:36,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) Word has length 684 [2023-11-06 22:44:36,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:36,288 INFO L225 Difference]: With dead ends: 3917 [2023-11-06 22:44:36,289 INFO L226 Difference]: Without dead ends: 2611 [2023-11-06 22:44:36,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 682 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 22:44:36,295 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 548 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:36,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 1533 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:36,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2023-11-06 22:44:36,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2609. [2023-11-06 22:44:36,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 1752 states have (on average 1.6027397260273972) internal successors, (2808), 1752 states have internal predecessors, (2808), 848 states have call successors, (848), 8 states have call predecessors, (848), 8 states have return successors, (848), 848 states have call predecessors, (848), 848 states have call successors, (848) [2023-11-06 22:44:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 4504 transitions. [2023-11-06 22:44:36,823 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 4504 transitions. Word has length 684 [2023-11-06 22:44:36,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:36,825 INFO L495 AbstractCegarLoop]: Abstraction has 2609 states and 4504 transitions. [2023-11-06 22:44:36,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-11-06 22:44:36,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 4504 transitions. [2023-11-06 22:44:36,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-06 22:44:36,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:36,834 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:36,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-06 22:44:37,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:44:37,044 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:37,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:37,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1504918712, now seen corresponding path program 1 times [2023-11-06 22:44:37,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:37,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772447977] [2023-11-06 22:44:37,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:37,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:37,132 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:37,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766091325] [2023-11-06 22:44:37,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:37,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:37,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:37,134 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:37,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:44:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:37,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:44:37,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:37,795 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22260 trivial. 0 not checked. [2023-11-06 22:44:37,795 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:37,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:37,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772447977] [2023-11-06 22:44:37,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:37,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766091325] [2023-11-06 22:44:37,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766091325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:37,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:37,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:44:37,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798940452] [2023-11-06 22:44:37,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:37,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:37,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:37,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:37,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:37,800 INFO L87 Difference]: Start difference. First operand 2609 states and 4504 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-11-06 22:44:38,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:38,100 INFO L93 Difference]: Finished difference Result 5369 states and 9302 transitions. [2023-11-06 22:44:38,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:38,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) Word has length 685 [2023-11-06 22:44:38,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:38,125 INFO L225 Difference]: With dead ends: 5369 [2023-11-06 22:44:38,126 INFO L226 Difference]: Without dead ends: 2763 [2023-11-06 22:44:38,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 683 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 22:44:38,138 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 507 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:38,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 1310 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:38,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2023-11-06 22:44:38,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2761. [2023-11-06 22:44:38,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2761 states, 1904 states have (on average 1.6218487394957983) internal successors, (3088), 1904 states have internal predecessors, (3088), 848 states have call successors, (848), 8 states have call predecessors, (848), 8 states have return successors, (848), 848 states have call predecessors, (848), 848 states have call successors, (848) [2023-11-06 22:44:38,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2761 states to 2761 states and 4784 transitions. [2023-11-06 22:44:38,686 INFO L78 Accepts]: Start accepts. Automaton has 2761 states and 4784 transitions. Word has length 685 [2023-11-06 22:44:38,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:38,688 INFO L495 AbstractCegarLoop]: Abstraction has 2761 states and 4784 transitions. [2023-11-06 22:44:38,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-11-06 22:44:38,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2761 states and 4784 transitions. [2023-11-06 22:44:38,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-06 22:44:38,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:38,698 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:38,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:38,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:38,907 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:38,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:38,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1638932218, now seen corresponding path program 1 times [2023-11-06 22:44:38,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:38,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858271526] [2023-11-06 22:44:38,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:38,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:38,995 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:38,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526523976] [2023-11-06 22:44:38,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:38,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:38,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:38,997 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:39,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:44:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:44:39,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:39,624 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22260 trivial. 0 not checked. [2023-11-06 22:44:39,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:39,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:39,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858271526] [2023-11-06 22:44:39,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:39,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526523976] [2023-11-06 22:44:39,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526523976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:39,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:39,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:39,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529995780] [2023-11-06 22:44:39,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:39,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:39,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:39,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:39,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:39,630 INFO L87 Difference]: Start difference. First operand 2761 states and 4784 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-11-06 22:44:40,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:40,755 INFO L93 Difference]: Finished difference Result 10695 states and 18483 transitions. [2023-11-06 22:44:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:44:40,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) Word has length 685 [2023-11-06 22:44:40,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:40,818 INFO L225 Difference]: With dead ends: 10695 [2023-11-06 22:44:40,818 INFO L226 Difference]: Without dead ends: 7937 [2023-11-06 22:44:40,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:40,889 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 1070 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:40,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 1709 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:44:40,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7937 states. [2023-11-06 22:44:42,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7937 to 3001. [2023-11-06 22:44:42,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3001 states, 2144 states have (on average 1.6492537313432836) internal successors, (3536), 2144 states have internal predecessors, (3536), 848 states have call successors, (848), 8 states have call predecessors, (848), 8 states have return successors, (848), 848 states have call predecessors, (848), 848 states have call successors, (848) [2023-11-06 22:44:42,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 5232 transitions. [2023-11-06 22:44:42,216 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 5232 transitions. Word has length 685 [2023-11-06 22:44:42,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:42,218 INFO L495 AbstractCegarLoop]: Abstraction has 3001 states and 5232 transitions. [2023-11-06 22:44:42,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-11-06 22:44:42,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 5232 transitions. [2023-11-06 22:44:42,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-06 22:44:42,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:42,227 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:42,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:42,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:42,437 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:42,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:42,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1585522127, now seen corresponding path program 1 times [2023-11-06 22:44:42,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:42,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725846291] [2023-11-06 22:44:42,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:42,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:42,584 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:42,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1460185415] [2023-11-06 22:44:42,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:42,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:42,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:42,586 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:42,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:44:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:44:43,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:43,313 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22260 trivial. 0 not checked. [2023-11-06 22:44:43,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:43,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:43,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725846291] [2023-11-06 22:44:43,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:43,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460185415] [2023-11-06 22:44:43,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460185415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:43,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:43,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:43,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986377086] [2023-11-06 22:44:43,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:43,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:43,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:43,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:43,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:43,318 INFO L87 Difference]: Start difference. First operand 3001 states and 5232 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-11-06 22:44:44,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:44,243 INFO L93 Difference]: Finished difference Result 9711 states and 17015 transitions. [2023-11-06 22:44:44,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:44:44,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) Word has length 685 [2023-11-06 22:44:44,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:44,292 INFO L225 Difference]: With dead ends: 9711 [2023-11-06 22:44:44,292 INFO L226 Difference]: Without dead ends: 6713 [2023-11-06 22:44:44,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:44,305 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 874 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:44,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1462 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:44:44,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6713 states. [2023-11-06 22:44:45,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6713 to 6693. [2023-11-06 22:44:45,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6693 states, 5244 states have (on average 1.6941266209000763) internal successors, (8884), 5260 states have internal predecessors, (8884), 1424 states have call successors, (1424), 24 states have call predecessors, (1424), 24 states have return successors, (1424), 1408 states have call predecessors, (1424), 1424 states have call successors, (1424) [2023-11-06 22:44:45,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6693 states to 6693 states and 11732 transitions. [2023-11-06 22:44:45,351 INFO L78 Accepts]: Start accepts. Automaton has 6693 states and 11732 transitions. Word has length 685 [2023-11-06 22:44:45,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:45,352 INFO L495 AbstractCegarLoop]: Abstraction has 6693 states and 11732 transitions. [2023-11-06 22:44:45,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-11-06 22:44:45,353 INFO L276 IsEmpty]: Start isEmpty. Operand 6693 states and 11732 transitions. [2023-11-06 22:44:45,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-06 22:44:45,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:45,422 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:45,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:45,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:45,623 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:45,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:45,623 INFO L85 PathProgramCache]: Analyzing trace with hash 864078003, now seen corresponding path program 1 times [2023-11-06 22:44:45,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:45,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542734206] [2023-11-06 22:44:45,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:45,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:45,731 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:45,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1461471363] [2023-11-06 22:44:45,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:45,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:45,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:45,734 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:45,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:44:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:44:46,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:47,210 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22260 trivial. 0 not checked. [2023-11-06 22:44:47,210 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:47,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:47,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542734206] [2023-11-06 22:44:47,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:47,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461471363] [2023-11-06 22:44:47,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461471363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:47,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:47,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:44:47,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793511097] [2023-11-06 22:44:47,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:47,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:47,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:47,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:47,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:47,216 INFO L87 Difference]: Start difference. First operand 6693 states and 11732 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-11-06 22:44:48,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:48,524 INFO L93 Difference]: Finished difference Result 15597 states and 27275 transitions. [2023-11-06 22:44:48,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:44:48,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) Word has length 685 [2023-11-06 22:44:48,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:48,602 INFO L225 Difference]: With dead ends: 15597 [2023-11-06 22:44:48,602 INFO L226 Difference]: Without dead ends: 12251 [2023-11-06 22:44:48,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:48,617 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 834 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:48,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 1465 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:44:48,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12251 states. [2023-11-06 22:44:50,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12251 to 12237. [2023-11-06 22:44:50,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12237 states, 9572 states have (on average 1.6863769327204345) internal successors, (16142), 9608 states have internal predecessors, (16142), 2616 states have call successors, (2616), 48 states have call predecessors, (2616), 48 states have return successors, (2616), 2580 states have call predecessors, (2616), 2616 states have call successors, (2616) [2023-11-06 22:44:50,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12237 states to 12237 states and 21374 transitions. [2023-11-06 22:44:50,260 INFO L78 Accepts]: Start accepts. Automaton has 12237 states and 21374 transitions. Word has length 685 [2023-11-06 22:44:50,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:50,261 INFO L495 AbstractCegarLoop]: Abstraction has 12237 states and 21374 transitions. [2023-11-06 22:44:50,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-11-06 22:44:50,261 INFO L276 IsEmpty]: Start isEmpty. Operand 12237 states and 21374 transitions. [2023-11-06 22:44:50,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-06 22:44:50,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:50,278 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:50,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:50,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:50,494 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:50,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:50,495 INFO L85 PathProgramCache]: Analyzing trace with hash 910795797, now seen corresponding path program 1 times [2023-11-06 22:44:50,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:50,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563836873] [2023-11-06 22:44:50,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:50,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:50,583 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:50,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2065539571] [2023-11-06 22:44:50,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:50,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:50,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:50,585 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:50,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:44:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:44:51,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22260 trivial. 0 not checked. [2023-11-06 22:44:52,176 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:52,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:52,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563836873] [2023-11-06 22:44:52,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:52,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065539571] [2023-11-06 22:44:52,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065539571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:52,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:52,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:52,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455109977] [2023-11-06 22:44:52,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:52,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:52,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:52,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:52,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:52,180 INFO L87 Difference]: Start difference. First operand 12237 states and 21374 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-11-06 22:44:55,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:55,113 INFO L93 Difference]: Finished difference Result 34521 states and 60456 transitions. [2023-11-06 22:44:55,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:44:55,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) Word has length 685 [2023-11-06 22:44:55,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:55,183 INFO L225 Difference]: With dead ends: 34521 [2023-11-06 22:44:55,183 INFO L226 Difference]: Without dead ends: 20859 [2023-11-06 22:44:55,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:44:55,225 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 1772 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:55,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1772 Valid, 2001 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 22:44:55,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20859 states. [2023-11-06 22:44:57,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20859 to 20331. [2023-11-06 22:44:57,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20331 states, 16370 states have (on average 1.6835675015271838) internal successors, (27560), 16454 states have internal predecessors, (27560), 3864 states have call successors, (3864), 96 states have call predecessors, (3864), 96 states have return successors, (3864), 3780 states have call predecessors, (3864), 3864 states have call successors, (3864) [2023-11-06 22:44:57,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20331 states to 20331 states and 35288 transitions. [2023-11-06 22:44:57,231 INFO L78 Accepts]: Start accepts. Automaton has 20331 states and 35288 transitions. Word has length 685 [2023-11-06 22:44:57,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:57,233 INFO L495 AbstractCegarLoop]: Abstraction has 20331 states and 35288 transitions. [2023-11-06 22:44:57,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-11-06 22:44:57,233 INFO L276 IsEmpty]: Start isEmpty. Operand 20331 states and 35288 transitions. [2023-11-06 22:44:57,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-06 22:44:57,257 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:57,257 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:57,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:57,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:57,467 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:57,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:57,467 INFO L85 PathProgramCache]: Analyzing trace with hash -110272557, now seen corresponding path program 1 times [2023-11-06 22:44:57,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:57,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477923619] [2023-11-06 22:44:57,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:57,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:57,554 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:57,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [986266319] [2023-11-06 22:44:57,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:57,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:57,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:57,556 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:57,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:44:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:58,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:44:58,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:59,144 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22260 trivial. 0 not checked. [2023-11-06 22:44:59,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:59,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:59,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477923619] [2023-11-06 22:44:59,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:59,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986266319] [2023-11-06 22:44:59,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986266319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:59,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:59,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:59,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603482248] [2023-11-06 22:44:59,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:59,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:59,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:59,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:59,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:59,148 INFO L87 Difference]: Start difference. First operand 20331 states and 35288 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-11-06 22:45:04,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:04,474 INFO L93 Difference]: Finished difference Result 77591 states and 134436 transitions. [2023-11-06 22:45:04,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:45:04,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) Word has length 685 [2023-11-06 22:45:04,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:04,654 INFO L225 Difference]: With dead ends: 77591 [2023-11-06 22:45:04,654 INFO L226 Difference]: Without dead ends: 57263 [2023-11-06 22:45:04,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:45:04,697 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 1589 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:04,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 1600 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 22:45:04,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57263 states. [2023-11-06 22:45:10,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57263 to 57233. [2023-11-06 22:45:10,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57233 states, 46048 states have (on average 1.676250868658791) internal successors, (77188), 46312 states have internal predecessors, (77188), 10896 states have call successors, (10896), 288 states have call predecessors, (10896), 288 states have return successors, (10896), 10632 states have call predecessors, (10896), 10896 states have call successors, (10896) [2023-11-06 22:45:10,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57233 states to 57233 states and 98980 transitions. [2023-11-06 22:45:10,763 INFO L78 Accepts]: Start accepts. Automaton has 57233 states and 98980 transitions. Word has length 685 [2023-11-06 22:45:10,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:10,765 INFO L495 AbstractCegarLoop]: Abstraction has 57233 states and 98980 transitions. [2023-11-06 22:45:10,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-11-06 22:45:10,765 INFO L276 IsEmpty]: Start isEmpty. Operand 57233 states and 98980 transitions. [2023-11-06 22:45:10,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-06 22:45:10,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:10,808 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:45:10,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:45:11,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:11,017 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:11,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:11,018 INFO L85 PathProgramCache]: Analyzing trace with hash -87640303, now seen corresponding path program 1 times [2023-11-06 22:45:11,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:11,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762666910] [2023-11-06 22:45:11,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:11,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:11,125 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:45:11,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169370357] [2023-11-06 22:45:11,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:11,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:11,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:11,127 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:11,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e730381-f85c-43b7-93b2-fd23816b8eb0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:45:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-06 22:45:11,783 INFO L285 TraceCheckSpWp]: Computing forward predicates...