./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-programs/partial_mod_count_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-programs/partial_mod_count_3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a8f602fe3f26a1a48cfc4520a058a139a989329a9c65c27b1560937231a92c27 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:48:37,829 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:48:37,936 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:48:37,947 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:48:37,947 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:48:38,005 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:48:38,007 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:48:38,008 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:48:38,009 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:48:38,014 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:48:38,015 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:48:38,016 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:48:38,016 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:48:38,018 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:48:38,019 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:48:38,019 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:48:38,020 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:48:38,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:48:38,021 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:48:38,021 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:48:38,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:48:38,023 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:48:38,023 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:48:38,023 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:48:38,024 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:48:38,025 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:48:38,025 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:48:38,026 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:48:38,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:38,035 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:48:38,036 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:48:38,036 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:48:38,036 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:48:38,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:48:38,037 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:48:38,037 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:48:38,037 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:48:38,038 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:48:38,038 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:48:38,038 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_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8f602fe3f26a1a48cfc4520a058a139a989329a9c65c27b1560937231a92c27 [2023-11-19 07:48:38,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:48:38,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:48:38,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:48:38,415 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:48:38,416 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:48:38,417 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/array-programs/partial_mod_count_3.c [2023-11-19 07:48:41,488 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:48:41,801 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:48:41,802 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/sv-benchmarks/c/array-programs/partial_mod_count_3.c [2023-11-19 07:48:41,811 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/data/96f7a18a3/2520e98484844a5eafa50741c726ecdc/FLAGea4b92cfa [2023-11-19 07:48:41,874 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/data/96f7a18a3/2520e98484844a5eafa50741c726ecdc [2023-11-19 07:48:41,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:48:41,891 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:48:41,918 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:41,918 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:48:41,926 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:48:41,927 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:41" (1/1) ... [2023-11-19 07:48:41,929 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6084c93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:41, skipping insertion in model container [2023-11-19 07:48:41,929 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:41" (1/1) ... [2023-11-19 07:48:41,975 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:48:42,174 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_6dba0370-17a1-45fd-ba07-d2068f875b5d/sv-benchmarks/c/array-programs/partial_mod_count_3.c[323,336] [2023-11-19 07:48:42,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:42,211 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:48:42,228 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_6dba0370-17a1-45fd-ba07-d2068f875b5d/sv-benchmarks/c/array-programs/partial_mod_count_3.c[323,336] [2023-11-19 07:48:42,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:42,267 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:48:42,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42 WrapperNode [2023-11-19 07:48:42,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:42,270 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:42,270 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:48:42,270 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:48:42,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,290 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,320 INFO L138 Inliner]: procedures = 13, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 52 [2023-11-19 07:48:42,321 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:42,322 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:48:42,322 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:48:42,323 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:48:42,330 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,333 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,333 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,338 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,342 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,343 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,344 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:48:42,347 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:48:42,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:48:42,348 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:48:42,348 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:42,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:42,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:42,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:48:42,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:48:42,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:48:42,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:48:42,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:48:42,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:48:42,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:48:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:48:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:48:42,500 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:48:42,502 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:48:42,670 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:48:42,678 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:48:42,678 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:48:42,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:42 BoogieIcfgContainer [2023-11-19 07:48:42,685 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:48:42,688 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:48:42,689 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:48:42,693 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:48:42,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:48:41" (1/3) ... [2023-11-19 07:48:42,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fd090a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:42, skipping insertion in model container [2023-11-19 07:48:42,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (2/3) ... [2023-11-19 07:48:42,697 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fd090a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:42, skipping insertion in model container [2023-11-19 07:48:42,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:42" (3/3) ... [2023-11-19 07:48:42,699 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_3.c [2023-11-19 07:48:42,722 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:48:42,723 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:48:42,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:48:42,792 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3922fbf4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:48:42,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:48:42,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:42,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 07:48:42,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:42,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:42,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:42,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:42,810 INFO L85 PathProgramCache]: Analyzing trace with hash -694175938, now seen corresponding path program 1 times [2023-11-19 07:48:42,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:42,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653874923] [2023-11-19 07:48:42,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:42,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:43,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:43,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:43,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653874923] [2023-11-19 07:48:43,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653874923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:43,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:43,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:48:43,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618851137] [2023-11-19 07:48:43,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:43,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:48:43,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:43,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:48:43,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:48:43,106 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:43,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:43,125 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2023-11-19 07:48:43,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:48:43,127 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 07:48:43,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:43,135 INFO L225 Difference]: With dead ends: 31 [2023-11-19 07:48:43,136 INFO L226 Difference]: Without dead ends: 14 [2023-11-19 07:48:43,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:48:43,145 INFO L413 NwaCegarLoop]: 21 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, 21 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:43,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:48:43,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-19 07:48:43,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-19 07:48:43,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:43,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2023-11-19 07:48:43,182 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2023-11-19 07:48:43,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:43,183 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2023-11-19 07:48:43,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:43,184 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2023-11-19 07:48:43,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 07:48:43,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:43,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:43,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:48:43,187 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:43,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:43,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1866781837, now seen corresponding path program 1 times [2023-11-19 07:48:43,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:43,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102016834] [2023-11-19 07:48:43,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:43,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:43,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:43,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102016834] [2023-11-19 07:48:43,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102016834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:43,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:43,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:43,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662803438] [2023-11-19 07:48:43,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:43,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:48:43,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:43,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:48:43,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:48:43,444 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:43,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:43,517 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2023-11-19 07:48:43,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:48:43,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 07:48:43,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:43,519 INFO L225 Difference]: With dead ends: 37 [2023-11-19 07:48:43,520 INFO L226 Difference]: Without dead ends: 25 [2023-11-19 07:48:43,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:48:43,525 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 37 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:43,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 14 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:48:43,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-19 07:48:43,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2023-11-19 07:48:43,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:43,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2023-11-19 07:48:43,537 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2023-11-19 07:48:43,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:43,538 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2023-11-19 07:48:43,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:43,538 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2023-11-19 07:48:43,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 07:48:43,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:43,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:43,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:48:43,541 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:43,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:43,542 INFO L85 PathProgramCache]: Analyzing trace with hash 97563565, now seen corresponding path program 1 times [2023-11-19 07:48:43,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:43,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042701363] [2023-11-19 07:48:43,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:43,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:43,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:43,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:43,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042701363] [2023-11-19 07:48:43,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042701363] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:48:43,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429968933] [2023-11-19 07:48:43,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:43,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:43,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:43,732 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:43,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:48:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:43,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:48:43,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:44,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:44,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:44,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:44,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429968933] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:44,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:48:44,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-19 07:48:44,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227225079] [2023-11-19 07:48:44,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:44,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:48:44,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:44,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:48:44,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:48:44,061 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:44,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:44,233 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2023-11-19 07:48:44,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:48:44,234 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 07:48:44,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:44,235 INFO L225 Difference]: With dead ends: 61 [2023-11-19 07:48:44,235 INFO L226 Difference]: Without dead ends: 49 [2023-11-19 07:48:44,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:48:44,238 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 191 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:44,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 32 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:48:44,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-19 07:48:44,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 24. [2023-11-19 07:48:44,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:44,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-11-19 07:48:44,246 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 12 [2023-11-19 07:48:44,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:44,247 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-11-19 07:48:44,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:44,247 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-11-19 07:48:44,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 07:48:44,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:44,249 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:44,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:44,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:44,464 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:44,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:44,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1361285581, now seen corresponding path program 1 times [2023-11-19 07:48:44,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:44,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108645236] [2023-11-19 07:48:44,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:44,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:44,491 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:44,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1137953378] [2023-11-19 07:48:44,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:44,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:44,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:44,493 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:44,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:48:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:44,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:48:44,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:44,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:44,789 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:44,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:44,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108645236] [2023-11-19 07:48:44,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:44,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137953378] [2023-11-19 07:48:44,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137953378] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:44,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:48:44,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-19 07:48:44,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528050007] [2023-11-19 07:48:44,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:44,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:48:44,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:44,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:48:44,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:48:44,794 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:45,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:45,078 INFO L93 Difference]: Finished difference Result 131 states and 157 transitions. [2023-11-19 07:48:45,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:48:45,079 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-19 07:48:45,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:45,082 INFO L225 Difference]: With dead ends: 131 [2023-11-19 07:48:45,082 INFO L226 Difference]: Without dead ends: 117 [2023-11-19 07:48:45,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:48:45,084 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 383 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:45,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 62 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:48:45,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-19 07:48:45,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 42. [2023-11-19 07:48:45,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:45,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2023-11-19 07:48:45,096 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 21 [2023-11-19 07:48:45,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:45,097 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2023-11-19 07:48:45,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:45,097 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2023-11-19 07:48:45,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 07:48:45,098 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:45,099 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:45,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:45,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:45,312 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:45,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:45,313 INFO L85 PathProgramCache]: Analyzing trace with hash 194524081, now seen corresponding path program 2 times [2023-11-19 07:48:45,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:45,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577137893] [2023-11-19 07:48:45,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:45,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:45,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:45,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332238087] [2023-11-19 07:48:45,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:48:45,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:45,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:45,347 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:45,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:48:45,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:48:45,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:48:45,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:48:45,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:48:45,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:45,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:45,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577137893] [2023-11-19 07:48:45,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:45,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332238087] [2023-11-19 07:48:45,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332238087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:45,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:45,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:48:45,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617375547] [2023-11-19 07:48:45,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:45,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:48:45,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:45,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:48:45,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:48:45,664 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:45,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:45,726 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2023-11-19 07:48:45,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:48:45,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-11-19 07:48:45,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:45,728 INFO L225 Difference]: With dead ends: 56 [2023-11-19 07:48:45,728 INFO L226 Difference]: Without dead ends: 54 [2023-11-19 07:48:45,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:48:45,730 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 30 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:45,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 26 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:48:45,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-19 07:48:45,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-19 07:48:45,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:45,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2023-11-19 07:48:45,744 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 39 [2023-11-19 07:48:45,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:45,744 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2023-11-19 07:48:45,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:45,745 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2023-11-19 07:48:45,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 07:48:45,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:45,746 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:45,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:45,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:45,973 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:45,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:45,973 INFO L85 PathProgramCache]: Analyzing trace with hash -838184220, now seen corresponding path program 1 times [2023-11-19 07:48:45,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:45,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111602974] [2023-11-19 07:48:45,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:45,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:46,008 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:46,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566513140] [2023-11-19 07:48:46,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:46,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:46,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:46,010 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:46,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:48:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:46,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:48:46,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:48:46,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:46,715 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:48:46,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:46,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111602974] [2023-11-19 07:48:46,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:46,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566513140] [2023-11-19 07:48:46,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566513140] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:46,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:48:46,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-11-19 07:48:46,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985865406] [2023-11-19 07:48:46,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:46,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-19 07:48:46,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:46,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-19 07:48:46,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2023-11-19 07:48:46,726 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 25 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:47,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:47,484 INFO L93 Difference]: Finished difference Result 547 states and 646 transitions. [2023-11-19 07:48:47,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-19 07:48:47,485 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 25 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-11-19 07:48:47,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:47,489 INFO L225 Difference]: With dead ends: 547 [2023-11-19 07:48:47,489 INFO L226 Difference]: Without dead ends: 512 [2023-11-19 07:48:47,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=589, Invalid=743, Unknown=0, NotChecked=0, Total=1332 [2023-11-19 07:48:47,492 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 739 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:47,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 134 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:48:47,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2023-11-19 07:48:47,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 90. [2023-11-19 07:48:47,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.1797752808988764) internal successors, (105), 89 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:47,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions. [2023-11-19 07:48:47,519 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 45 [2023-11-19 07:48:47,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:47,519 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 105 transitions. [2023-11-19 07:48:47,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 25 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:47,520 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions. [2023-11-19 07:48:47,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 07:48:47,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:47,523 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:47,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:47,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:47,749 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:47,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:47,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1895724964, now seen corresponding path program 2 times [2023-11-19 07:48:47,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:47,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10538399] [2023-11-19 07:48:47,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:47,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:47,790 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:47,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [969350767] [2023-11-19 07:48:47,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:48:47,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:47,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:47,792 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:47,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:48:47,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:48:47,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:48:47,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 07:48:47,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:48,736 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:48:48,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:49,676 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:48:49,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:49,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10538399] [2023-11-19 07:48:49,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:49,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969350767] [2023-11-19 07:48:49,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969350767] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:49,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:48:49,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2023-11-19 07:48:49,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000532783] [2023-11-19 07:48:49,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:49,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-19 07:48:49,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:49,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-19 07:48:49,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1179, Invalid=1271, Unknown=0, NotChecked=0, Total=2450 [2023-11-19 07:48:49,682 INFO L87 Difference]: Start difference. First operand 90 states and 105 transitions. Second operand has 50 states, 50 states have (on average 2.94) internal successors, (147), 49 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:52,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:52,024 INFO L93 Difference]: Finished difference Result 1135 states and 1342 transitions. [2023-11-19 07:48:52,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-19 07:48:52,026 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.94) internal successors, (147), 49 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-11-19 07:48:52,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:52,032 INFO L225 Difference]: With dead ends: 1135 [2023-11-19 07:48:52,032 INFO L226 Difference]: Without dead ends: 1082 [2023-11-19 07:48:52,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2329, Invalid=2927, Unknown=0, NotChecked=0, Total=5256 [2023-11-19 07:48:52,038 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1609 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:52,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 278 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:48:52,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2023-11-19 07:48:52,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 162. [2023-11-19 07:48:52,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.173913043478261) internal successors, (189), 161 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:52,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 189 transitions. [2023-11-19 07:48:52,092 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 189 transitions. Word has length 81 [2023-11-19 07:48:52,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:52,094 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 189 transitions. [2023-11-19 07:48:52,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.94) internal successors, (147), 49 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:52,096 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 189 transitions. [2023-11-19 07:48:52,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-19 07:48:52,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:52,107 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 23, 23, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:52,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:52,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:52,308 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:52,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:52,308 INFO L85 PathProgramCache]: Analyzing trace with hash 694735140, now seen corresponding path program 3 times [2023-11-19 07:48:52,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:52,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27604863] [2023-11-19 07:48:52,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:52,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:52,396 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:52,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350782929] [2023-11-19 07:48:52,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:48:52,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:52,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:52,400 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:52,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:48:52,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 07:48:52,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:48:52,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:48:52,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:53,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3155 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2023-11-19 07:48:53,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3155 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2023-11-19 07:48:55,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:55,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27604863] [2023-11-19 07:48:55,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:55,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350782929] [2023-11-19 07:48:55,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350782929] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:55,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:48:55,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-19 07:48:55,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684049111] [2023-11-19 07:48:55,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:55,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:48:55,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:55,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:48:55,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:48:55,215 INFO L87 Difference]: Start difference. First operand 162 states and 189 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:55,439 INFO L93 Difference]: Finished difference Result 188 states and 222 transitions. [2023-11-19 07:48:55,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:48:55,440 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2023-11-19 07:48:55,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:55,442 INFO L225 Difference]: With dead ends: 188 [2023-11-19 07:48:55,442 INFO L226 Difference]: Without dead ends: 186 [2023-11-19 07:48:55,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 294 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=228, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:48:55,443 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 115 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:55,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 42 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:48:55,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-11-19 07:48:55,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-11-19 07:48:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.172972972972973) internal successors, (217), 185 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 217 transitions. [2023-11-19 07:48:55,475 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 217 transitions. Word has length 153 [2023-11-19 07:48:55,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:55,476 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 217 transitions. [2023-11-19 07:48:55,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,476 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 217 transitions. [2023-11-19 07:48:55,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-19 07:48:55,478 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:55,478 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 23, 23, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:55,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:55,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:48:55,700 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:55,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:55,700 INFO L85 PathProgramCache]: Analyzing trace with hash -86837392, now seen corresponding path program 4 times [2023-11-19 07:48:55,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:55,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728367442] [2023-11-19 07:48:55,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:55,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:55,776 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:55,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [67010901] [2023-11-19 07:48:55,777 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:48:55,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:55,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:55,778 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:55,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:49:02,218 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:49:02,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:49:02,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-19 07:49:02,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:04,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3231 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-19 07:49:04,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3231 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-19 07:49:07,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:07,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728367442] [2023-11-19 07:49:07,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:07,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67010901] [2023-11-19 07:49:07,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67010901] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:49:07,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:49:07,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 97 [2023-11-19 07:49:07,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023685717] [2023-11-19 07:49:07,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:49:07,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-11-19 07:49:07,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:07,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-11-19 07:49:07,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4659, Invalid=4847, Unknown=0, NotChecked=0, Total=9506 [2023-11-19 07:49:07,185 INFO L87 Difference]: Start difference. First operand 186 states and 217 transitions. Second operand has 98 states, 98 states have (on average 2.9693877551020407) internal successors, (291), 97 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:16,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:16,008 INFO L93 Difference]: Finished difference Result 4495 states and 5280 transitions. [2023-11-19 07:49:16,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-11-19 07:49:16,009 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.9693877551020407) internal successors, (291), 97 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2023-11-19 07:49:16,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:16,037 INFO L225 Difference]: With dead ends: 4495 [2023-11-19 07:49:16,037 INFO L226 Difference]: Without dead ends: 4382 [2023-11-19 07:49:16,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4465 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=9265, Invalid=11615, Unknown=0, NotChecked=0, Total=20880 [2023-11-19 07:49:16,047 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 4213 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4213 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:16,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4213 Valid, 560 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 07:49:16,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2023-11-19 07:49:16,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 330. [2023-11-19 07:49:16,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.1702127659574468) internal successors, (385), 329 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:16,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 385 transitions. [2023-11-19 07:49:16,140 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 385 transitions. Word has length 177 [2023-11-19 07:49:16,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:16,141 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 385 transitions. [2023-11-19 07:49:16,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.9693877551020407) internal successors, (291), 97 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:16,141 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 385 transitions. [2023-11-19 07:49:16,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2023-11-19 07:49:16,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:16,147 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 47, 47, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:16,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:16,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 07:49:16,370 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:16,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:16,370 INFO L85 PathProgramCache]: Analyzing trace with hash -97064336, now seen corresponding path program 5 times [2023-11-19 07:49:16,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:16,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877559683] [2023-11-19 07:49:16,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:16,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:16,522 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:16,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [378502992] [2023-11-19 07:49:16,522 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-19 07:49:16,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:16,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:16,524 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:16,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dba0370-17a1-45fd-ba07-d2068f875b5d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process