./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-35.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-35.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c178e26bd16106920ac3430faa853163075f2c78c2a5a24c5798639d4db107ab --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:47:30,801 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:47:30,916 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:47:30,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:47:30,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:47:30,965 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:47:30,966 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:47:30,967 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:47:30,968 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:47:30,973 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:47:30,975 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:47:30,975 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:47:30,976 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:47:30,978 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:47:30,978 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:47:30,979 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:47:30,979 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:47:30,980 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:47:30,980 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:47:30,981 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:47:30,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:47:30,982 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:47:30,982 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:47:30,982 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:47:30,983 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:47:30,984 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:47:30,984 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:47:30,985 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:47:30,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:47:30,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:47:30,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:47:30,987 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:47:30,988 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:47:30,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:47:30,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:47:30,988 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:47:30,989 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:47:30,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:47:30,989 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:47:30,990 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_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c178e26bd16106920ac3430faa853163075f2c78c2a5a24c5798639d4db107ab [2023-11-06 22:47:31,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:47:31,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:47:31,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:47:31,382 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:47:31,382 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:47:31,384 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-35.i [2023-11-06 22:47:34,389 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:47:34,747 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:47:34,748 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-35.i [2023-11-06 22:47:34,769 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/data/55168e770/938d9e1965734155b2a4214ad4bbe905/FLAG2a724b08b [2023-11-06 22:47:34,784 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/data/55168e770/938d9e1965734155b2a4214ad4bbe905 [2023-11-06 22:47:34,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:47:34,789 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:47:34,790 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:47:34,790 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:47:34,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:47:34,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:47:34" (1/1) ... [2023-11-06 22:47:34,805 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@320c8c43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:34, skipping insertion in model container [2023-11-06 22:47:34,805 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:47:34" (1/1) ... [2023-11-06 22:47:34,875 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:47:35,050 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_150e8c31-a203-4461-a9d1-fa960dbc9017/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-35.i[916,929] [2023-11-06 22:47:35,220 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:47:35,238 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:47:35,251 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_150e8c31-a203-4461-a9d1-fa960dbc9017/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-35.i[916,929] [2023-11-06 22:47:35,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:47:35,410 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:47:35,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:35 WrapperNode [2023-11-06 22:47:35,410 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:47:35,412 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:47:35,412 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:47:35,412 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:47:35,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:35" (1/1) ... [2023-11-06 22:47:35,445 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:35" (1/1) ... [2023-11-06 22:47:35,530 INFO L138 Inliner]: procedures = 26, calls = 107, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 639 [2023-11-06 22:47:35,530 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:47:35,531 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:47:35,531 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:47:35,531 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:47:35,542 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:35" (1/1) ... [2023-11-06 22:47:35,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:35" (1/1) ... [2023-11-06 22:47:35,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:35" (1/1) ... [2023-11-06 22:47:35,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:35" (1/1) ... [2023-11-06 22:47:35,589 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:35" (1/1) ... [2023-11-06 22:47:35,625 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:35" (1/1) ... [2023-11-06 22:47:35,632 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:35" (1/1) ... [2023-11-06 22:47:35,639 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:35" (1/1) ... [2023-11-06 22:47:35,667 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:47:35,668 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:47:35,668 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:47:35,668 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:47:35,669 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:35" (1/1) ... [2023-11-06 22:47:35,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:47:35,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:35,708 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:47:35,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:47:35,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:47:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:47:35,752 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:47:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:47:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:47:35,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:47:35,927 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:47:35,930 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:47:37,135 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:47:37,146 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:47:37,146 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:47:37,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:47:37 BoogieIcfgContainer [2023-11-06 22:47:37,150 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:47:37,154 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:47:37,154 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:47:37,157 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:47:37,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:47:34" (1/3) ... [2023-11-06 22:47:37,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b40eaf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:47:37, skipping insertion in model container [2023-11-06 22:47:37,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:35" (2/3) ... [2023-11-06 22:47:37,162 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b40eaf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:47:37, skipping insertion in model container [2023-11-06 22:47:37,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:47:37" (3/3) ... [2023-11-06 22:47:37,163 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-35.i [2023-11-06 22:47:37,183 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:47:37,183 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:47:37,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:47:37,268 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@265c714e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:47:37,269 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:47:37,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 252 states, 155 states have (on average 1.5290322580645161) internal successors, (237), 156 states have internal predecessors, (237), 94 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-06 22:47:37,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-11-06 22:47:37,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:37,323 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:37,324 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:37,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:37,330 INFO L85 PathProgramCache]: Analyzing trace with hash 801435895, now seen corresponding path program 1 times [2023-11-06 22:47:37,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:37,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256295238] [2023-11-06 22:47:37,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:37,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:37,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:37,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256295238] [2023-11-06 22:47:37,881 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:47:37,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243962864] [2023-11-06 22:47:37,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:37,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:37,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:37,888 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:37,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:47:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:38,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:47:38,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:38,524 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 17298 trivial. 0 not checked. [2023-11-06 22:47:38,525 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:47:38,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243962864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:38,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:38,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:47:38,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096747711] [2023-11-06 22:47:38,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:38,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:47:38,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:38,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:47:38,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:47:38,586 INFO L87 Difference]: Start difference. First operand has 252 states, 155 states have (on average 1.5290322580645161) internal successors, (237), 156 states have internal predecessors, (237), 94 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 2 states, 2 states have (on average 59.0) internal successors, (118), 2 states have internal predecessors, (118), 2 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 2 states have call successors, (94) [2023-11-06 22:47:38,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:38,696 INFO L93 Difference]: Finished difference Result 496 states and 936 transitions. [2023-11-06 22:47:38,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:47:38,699 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 59.0) internal successors, (118), 2 states have internal predecessors, (118), 2 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 2 states have call successors, (94) Word has length 583 [2023-11-06 22:47:38,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:38,719 INFO L225 Difference]: With dead ends: 496 [2023-11-06 22:47:38,720 INFO L226 Difference]: Without dead ends: 247 [2023-11-06 22:47:38,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:47:38,730 INFO L413 NwaCegarLoop]: 414 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, 414 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:38,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:47:38,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-11-06 22:47:38,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2023-11-06 22:47:38,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 151 states have (on average 1.4966887417218544) internal successors, (226), 151 states have internal predecessors, (226), 94 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-06 22:47:38,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 414 transitions. [2023-11-06 22:47:38,881 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 414 transitions. Word has length 583 [2023-11-06 22:47:38,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:38,884 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 414 transitions. [2023-11-06 22:47:38,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 59.0) internal successors, (118), 2 states have internal predecessors, (118), 2 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 2 states have call successors, (94) [2023-11-06 22:47:38,885 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 414 transitions. [2023-11-06 22:47:38,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-11-06 22:47:38,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:38,913 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:38,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:39,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:47:39,121 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:39,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:39,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2012681981, now seen corresponding path program 1 times [2023-11-06 22:47:39,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:39,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205364710] [2023-11-06 22:47:39,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:39,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:39,380 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:47:39,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193285629] [2023-11-06 22:47:39,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:39,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:39,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:39,383 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:39,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:47:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:39,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:47:39,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:39,958 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-11-06 22:47:39,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:47:39,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:39,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205364710] [2023-11-06 22:47:39,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:47:39,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193285629] [2023-11-06 22:47:39,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193285629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:39,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:39,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:47:39,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138189900] [2023-11-06 22:47:39,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:39,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:47:39,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:39,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:47:39,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:47:39,975 INFO L87 Difference]: Start difference. First operand 247 states and 414 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-11-06 22:47:40,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:40,072 INFO L93 Difference]: Finished difference Result 491 states and 825 transitions. [2023-11-06 22:47:40,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:47:40,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 583 [2023-11-06 22:47:40,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:40,089 INFO L225 Difference]: With dead ends: 491 [2023-11-06 22:47:40,089 INFO L226 Difference]: Without dead ends: 247 [2023-11-06 22:47:40,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:47:40,094 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 18 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:40,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 802 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:47:40,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-11-06 22:47:40,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2023-11-06 22:47:40,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 151 states have (on average 1.490066225165563) internal successors, (225), 151 states have internal predecessors, (225), 94 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-06 22:47:40,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 413 transitions. [2023-11-06 22:47:40,159 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 413 transitions. Word has length 583 [2023-11-06 22:47:40,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:40,165 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 413 transitions. [2023-11-06 22:47:40,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-11-06 22:47:40,167 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 413 transitions. [2023-11-06 22:47:40,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2023-11-06 22:47:40,176 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:40,177 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:40,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:40,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:40,385 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:40,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:40,386 INFO L85 PathProgramCache]: Analyzing trace with hash 603326214, now seen corresponding path program 1 times [2023-11-06 22:47:40,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:40,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170352472] [2023-11-06 22:47:40,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:40,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:40,528 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:47:40,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306554867] [2023-11-06 22:47:40,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:40,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:40,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:40,534 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:40,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:47:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:40,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:47:40,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:41,084 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-11-06 22:47:41,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:47:41,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:41,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170352472] [2023-11-06 22:47:41,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:47:41,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306554867] [2023-11-06 22:47:41,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306554867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:41,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:41,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:47:41,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117401722] [2023-11-06 22:47:41,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:41,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:47:41,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:41,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:47:41,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:47:41,090 INFO L87 Difference]: Start difference. First operand 247 states and 413 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-11-06 22:47:41,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:41,149 INFO L93 Difference]: Finished difference Result 641 states and 1069 transitions. [2023-11-06 22:47:41,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:47:41,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 584 [2023-11-06 22:47:41,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:41,156 INFO L225 Difference]: With dead ends: 641 [2023-11-06 22:47:41,156 INFO L226 Difference]: Without dead ends: 397 [2023-11-06 22:47:41,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:47:41,159 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 246 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:41,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 874 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:47:41,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-11-06 22:47:41,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 394. [2023-11-06 22:47:41,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 243 states have internal predecessors, (358), 149 states have call successors, (149), 2 states have call predecessors, (149), 2 states have return successors, (149), 148 states have call predecessors, (149), 149 states have call successors, (149) [2023-11-06 22:47:41,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 656 transitions. [2023-11-06 22:47:41,217 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 656 transitions. Word has length 584 [2023-11-06 22:47:41,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:41,220 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 656 transitions. [2023-11-06 22:47:41,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-11-06 22:47:41,220 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 656 transitions. [2023-11-06 22:47:41,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2023-11-06 22:47:41,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:41,227 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:41,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:41,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:41,437 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:41,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:41,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1632685512, now seen corresponding path program 1 times [2023-11-06 22:47:41,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:41,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806022031] [2023-11-06 22:47:41,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:41,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:41,536 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:47:41,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682018916] [2023-11-06 22:47:41,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:41,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:41,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:41,539 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:41,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:47:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:41,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:47:41,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:42,113 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-11-06 22:47:42,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:47:42,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:42,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806022031] [2023-11-06 22:47:42,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:47:42,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682018916] [2023-11-06 22:47:42,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682018916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:42,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:42,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:47:42,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997924605] [2023-11-06 22:47:42,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:42,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:47:42,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:42,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:47:42,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:47:42,118 INFO L87 Difference]: Start difference. First operand 394 states and 656 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-11-06 22:47:42,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:42,332 INFO L93 Difference]: Finished difference Result 915 states and 1491 transitions. [2023-11-06 22:47:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:47:42,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 584 [2023-11-06 22:47:42,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:42,341 INFO L225 Difference]: With dead ends: 915 [2023-11-06 22:47:42,341 INFO L226 Difference]: Without dead ends: 524 [2023-11-06 22:47:42,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:47:42,344 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 93 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:42,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1609 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:47:42,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-11-06 22:47:42,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 474. [2023-11-06 22:47:42,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 306 states have (on average 1.457516339869281) internal successors, (446), 309 states have internal predecessors, (446), 163 states have call successors, (163), 4 states have call predecessors, (163), 4 states have return successors, (163), 160 states have call predecessors, (163), 163 states have call successors, (163) [2023-11-06 22:47:42,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 772 transitions. [2023-11-06 22:47:42,411 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 772 transitions. Word has length 584 [2023-11-06 22:47:42,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:42,413 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 772 transitions. [2023-11-06 22:47:42,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-11-06 22:47:42,413 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 772 transitions. [2023-11-06 22:47:42,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2023-11-06 22:47:42,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:42,420 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:42,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:42,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:42,629 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:42,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:42,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1982223414, now seen corresponding path program 1 times [2023-11-06 22:47:42,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:42,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996528395] [2023-11-06 22:47:42,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:42,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:42,734 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:47:42,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [278072738] [2023-11-06 22:47:42,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:42,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:42,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:42,736 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:42,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:47:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:43,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:47:43,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 5865 proven. 57 refuted. 0 times theorem prover too weak. 11562 trivial. 0 not checked. [2023-11-06 22:47:43,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:47:43,951 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 222 proven. 57 refuted. 0 times theorem prover too weak. 17205 trivial. 0 not checked. [2023-11-06 22:47:43,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:43,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996528395] [2023-11-06 22:47:43,952 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:47:43,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278072738] [2023-11-06 22:47:43,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278072738] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:47:43,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:47:43,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 22:47:43,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251509403] [2023-11-06 22:47:43,957 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:47:43,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:47:43,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:43,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:47:43,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:47:43,966 INFO L87 Difference]: Start difference. First operand 474 states and 772 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 2 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2023-11-06 22:47:44,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:44,609 INFO L93 Difference]: Finished difference Result 959 states and 1554 transitions. [2023-11-06 22:47:44,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:47:44,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 2 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) Word has length 584 [2023-11-06 22:47:44,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:44,616 INFO L225 Difference]: With dead ends: 959 [2023-11-06 22:47:44,617 INFO L226 Difference]: Without dead ends: 488 [2023-11-06 22:47:44,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1170 GetRequests, 1160 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:47:44,620 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 426 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:44,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 743 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:47:44,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-06 22:47:44,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 478. [2023-11-06 22:47:44,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 309 states have (on average 1.4466019417475728) internal successors, (447), 312 states have internal predecessors, (447), 163 states have call successors, (163), 5 states have call predecessors, (163), 5 states have return successors, (163), 160 states have call predecessors, (163), 163 states have call successors, (163) [2023-11-06 22:47:44,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 773 transitions. [2023-11-06 22:47:44,709 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 773 transitions. Word has length 584 [2023-11-06 22:47:44,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:44,710 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 773 transitions. [2023-11-06 22:47:44,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 2 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2023-11-06 22:47:44,711 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 773 transitions. [2023-11-06 22:47:44,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2023-11-06 22:47:44,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:44,717 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:44,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:44,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:44,926 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:44,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:44,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1997701212, now seen corresponding path program 1 times [2023-11-06 22:47:44,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:44,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179655015] [2023-11-06 22:47:44,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:44,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:45,012 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:47:45,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274675328] [2023-11-06 22:47:45,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:45,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:45,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:45,015 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:45,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:47:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:45,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:47:45,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-11-06 22:47:45,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:47:45,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:45,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179655015] [2023-11-06 22:47:45,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:47:45,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274675328] [2023-11-06 22:47:45,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274675328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:45,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:45,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:47:45,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823340517] [2023-11-06 22:47:45,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:45,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:47:45,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:45,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:47:45,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:47:45,624 INFO L87 Difference]: Start difference. First operand 478 states and 773 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-11-06 22:47:46,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:46,037 INFO L93 Difference]: Finished difference Result 1546 states and 2485 transitions. [2023-11-06 22:47:46,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:47:46,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 585 [2023-11-06 22:47:46,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:46,049 INFO L225 Difference]: With dead ends: 1546 [2023-11-06 22:47:46,049 INFO L226 Difference]: Without dead ends: 1071 [2023-11-06 22:47:46,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:47:46,054 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 367 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:46,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1760 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:47:46,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2023-11-06 22:47:46,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 791. [2023-11-06 22:47:46,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 558 states have (on average 1.4910394265232976) internal successors, (832), 565 states have internal predecessors, (832), 223 states have call successors, (223), 9 states have call predecessors, (223), 9 states have return successors, (223), 216 states have call predecessors, (223), 223 states have call successors, (223) [2023-11-06 22:47:46,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1278 transitions. [2023-11-06 22:47:46,162 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1278 transitions. Word has length 585 [2023-11-06 22:47:46,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:46,163 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 1278 transitions. [2023-11-06 22:47:46,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-11-06 22:47:46,164 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1278 transitions. [2023-11-06 22:47:46,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2023-11-06 22:47:46,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:46,171 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:46,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:46,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:47:46,381 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:46,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:46,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1902899298, now seen corresponding path program 1 times [2023-11-06 22:47:46,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:46,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349401952] [2023-11-06 22:47:46,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:46,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:46,464 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:47:46,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149448477] [2023-11-06 22:47:46,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:46,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:46,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:46,467 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:46,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:47:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:46,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-06 22:47:46,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:49,675 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 10979 proven. 225 refuted. 0 times theorem prover too weak. 6280 trivial. 0 not checked. [2023-11-06 22:47:49,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:47:51,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:51,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349401952] [2023-11-06 22:47:51,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:47:51,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149448477] [2023-11-06 22:47:51,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149448477] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:51,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:47:51,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-06 22:47:51,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335405987] [2023-11-06 22:47:51,504 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:47:51,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:47:51,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:51,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:47:51,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2023-11-06 22:47:51,507 INFO L87 Difference]: Start difference. First operand 791 states and 1278 transitions. Second operand has 18 states, 18 states have (on average 7.222222222222222) internal successors, (130), 18 states have internal predecessors, (130), 3 states have call successors, (94), 3 states have call predecessors, (94), 5 states have return successors, (94), 3 states have call predecessors, (94), 3 states have call successors, (94) [2023-11-06 22:47:57,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:48:01,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:48:05,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:48:10,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:48:14,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:48:16,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:48:26,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:48:29,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:48:32,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:48:34,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:48:37,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:48:39,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:48:41,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:48:43,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:48:47,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:48:49,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:48:51,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:48:54,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:48:56,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:48:58,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:49:00,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:49:03,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:49:06,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:49:08,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:49:10,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:49:16,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:16,614 INFO L93 Difference]: Finished difference Result 5477 states and 8615 transitions. [2023-11-06 22:49:16,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-06 22:49:16,615 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.222222222222222) internal successors, (130), 18 states have internal predecessors, (130), 3 states have call successors, (94), 3 states have call predecessors, (94), 5 states have return successors, (94), 3 states have call predecessors, (94), 3 states have call successors, (94) Word has length 585 [2023-11-06 22:49:16,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:16,652 INFO L225 Difference]: With dead ends: 5477 [2023-11-06 22:49:16,652 INFO L226 Difference]: Without dead ends: 4689 [2023-11-06 22:49:16,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=1058, Invalid=3496, Unknown=2, NotChecked=0, Total=4556 [2023-11-06 22:49:16,659 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 2239 mSDsluCounter, 3156 mSDsCounter, 0 mSdLazyCounter, 3653 mSolverCounterSat, 554 mSolverCounterUnsat, 24 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2355 SdHoareTripleChecker+Valid, 3575 SdHoareTripleChecker+Invalid, 4231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 3653 IncrementalHoareTripleChecker+Invalid, 24 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:16,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2355 Valid, 3575 Invalid, 4231 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [554 Valid, 3653 Invalid, 24 Unknown, 0 Unchecked, 68.0s Time] [2023-11-06 22:49:16,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4689 states. [2023-11-06 22:49:17,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4689 to 2590. [2023-11-06 22:49:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2590 states, 1947 states have (on average 1.500256805341551) internal successors, (2921), 1978 states have internal predecessors, (2921), 603 states have call successors, (603), 39 states have call predecessors, (603), 39 states have return successors, (603), 572 states have call predecessors, (603), 603 states have call successors, (603) [2023-11-06 22:49:17,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2590 states to 2590 states and 4127 transitions. [2023-11-06 22:49:17,187 INFO L78 Accepts]: Start accepts. Automaton has 2590 states and 4127 transitions. Word has length 585 [2023-11-06 22:49:17,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:17,189 INFO L495 AbstractCegarLoop]: Abstraction has 2590 states and 4127 transitions. [2023-11-06 22:49:17,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.222222222222222) internal successors, (130), 18 states have internal predecessors, (130), 3 states have call successors, (94), 3 states have call predecessors, (94), 5 states have return successors, (94), 3 states have call predecessors, (94), 3 states have call successors, (94) [2023-11-06 22:49:17,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2590 states and 4127 transitions. [2023-11-06 22:49:17,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2023-11-06 22:49:17,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:17,201 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:17,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:17,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:17,410 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:17,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:17,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1732536476, now seen corresponding path program 1 times [2023-11-06 22:49:17,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:17,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021116621] [2023-11-06 22:49:17,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:17,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:17,572 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:49:17,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [865393832] [2023-11-06 22:49:17,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:17,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:17,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:17,574 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:17,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:49:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:18,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:49:18,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:18,065 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-11-06 22:49:18,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:18,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:18,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021116621] [2023-11-06 22:49:18,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:49:18,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865393832] [2023-11-06 22:49:18,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865393832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:18,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:18,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:49:18,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872879241] [2023-11-06 22:49:18,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:18,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:49:18,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:18,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:49:18,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:49:18,070 INFO L87 Difference]: Start difference. First operand 2590 states and 4127 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-11-06 22:49:18,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:18,954 INFO L93 Difference]: Finished difference Result 7519 states and 11915 transitions. [2023-11-06 22:49:18,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:49:18,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 585 [2023-11-06 22:49:18,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:18,989 INFO L225 Difference]: With dead ends: 7519 [2023-11-06 22:49:18,990 INFO L226 Difference]: Without dead ends: 4932 [2023-11-06 22:49:18,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:19,001 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 297 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:19,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1717 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:19,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4932 states. [2023-11-06 22:49:19,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4932 to 3718. [2023-11-06 22:49:19,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3718 states, 2798 states have (on average 1.48927805575411) internal successors, (4167), 2845 states have internal predecessors, (4167), 863 states have call successors, (863), 56 states have call predecessors, (863), 56 states have return successors, (863), 816 states have call predecessors, (863), 863 states have call successors, (863) [2023-11-06 22:49:19,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3718 states to 3718 states and 5893 transitions. [2023-11-06 22:49:19,778 INFO L78 Accepts]: Start accepts. Automaton has 3718 states and 5893 transitions. Word has length 585 [2023-11-06 22:49:19,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:19,779 INFO L495 AbstractCegarLoop]: Abstraction has 3718 states and 5893 transitions. [2023-11-06 22:49:19,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-11-06 22:49:19,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3718 states and 5893 transitions. [2023-11-06 22:49:19,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2023-11-06 22:49:19,789 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:19,790 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:19,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:19,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:19,999 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:19,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:20,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1804923034, now seen corresponding path program 1 times [2023-11-06 22:49:20,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:20,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009928202] [2023-11-06 22:49:20,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:20,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:20,090 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:49:20,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [528760227] [2023-11-06 22:49:20,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:20,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:20,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:20,092 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:20,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:49:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:20,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:49:20,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 6855 proven. 72 refuted. 0 times theorem prover too weak. 10557 trivial. 0 not checked. [2023-11-06 22:49:20,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 207 proven. 72 refuted. 0 times theorem prover too weak. 17205 trivial. 0 not checked. [2023-11-06 22:49:21,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:21,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009928202] [2023-11-06 22:49:21,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:49:21,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528760227] [2023-11-06 22:49:21,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528760227] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:49:21,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:49:21,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-06 22:49:21,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640766328] [2023-11-06 22:49:21,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:21,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:49:21,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:21,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:49:21,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:49:21,424 INFO L87 Difference]: Start difference. First operand 3718 states and 5893 transitions. Second operand has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 3 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 3 states have call predecessors, (119), 3 states have call successors, (119) [2023-11-06 22:49:23,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:23,629 INFO L93 Difference]: Finished difference Result 8761 states and 13773 transitions. [2023-11-06 22:49:23,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:49:23,630 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 3 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 3 states have call predecessors, (119), 3 states have call successors, (119) Word has length 585 [2023-11-06 22:49:23,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:23,665 INFO L225 Difference]: With dead ends: 8761 [2023-11-06 22:49:23,665 INFO L226 Difference]: Without dead ends: 5046 [2023-11-06 22:49:23,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1175 GetRequests, 1160 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:49:23,678 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 510 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:23,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 1507 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:49:23,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5046 states. [2023-11-06 22:49:24,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5046 to 4903. [2023-11-06 22:49:24,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4903 states, 3644 states have (on average 1.4733809001097695) internal successors, (5369), 3707 states have internal predecessors, (5369), 1180 states have call successors, (1180), 78 states have call predecessors, (1180), 78 states have return successors, (1180), 1117 states have call predecessors, (1180), 1180 states have call successors, (1180) [2023-11-06 22:49:24,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4903 states to 4903 states and 7729 transitions. [2023-11-06 22:49:24,653 INFO L78 Accepts]: Start accepts. Automaton has 4903 states and 7729 transitions. Word has length 585 [2023-11-06 22:49:24,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:24,654 INFO L495 AbstractCegarLoop]: Abstraction has 4903 states and 7729 transitions. [2023-11-06 22:49:24,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 3 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 3 states have call predecessors, (119), 3 states have call successors, (119) [2023-11-06 22:49:24,655 INFO L276 IsEmpty]: Start isEmpty. Operand 4903 states and 7729 transitions. [2023-11-06 22:49:24,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2023-11-06 22:49:24,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:24,666 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:24,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:24,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:24,875 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:24,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:24,875 INFO L85 PathProgramCache]: Analyzing trace with hash 318447522, now seen corresponding path program 1 times [2023-11-06 22:49:24,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:24,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808935940] [2023-11-06 22:49:24,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:24,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:24,986 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:49:24,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1050163976] [2023-11-06 22:49:24,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:24,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:24,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:24,989 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:25,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:49:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:25,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:49:25,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:26,524 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 8079 proven. 180 refuted. 0 times theorem prover too weak. 9225 trivial. 0 not checked. [2023-11-06 22:49:26,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:27,362 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 99 proven. 180 refuted. 0 times theorem prover too weak. 17205 trivial. 0 not checked. [2023-11-06 22:49:27,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:27,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808935940] [2023-11-06 22:49:27,363 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:49:27,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050163976] [2023-11-06 22:49:27,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050163976] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:49:27,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:49:27,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-06 22:49:27,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713639362] [2023-11-06 22:49:27,366 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:27,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:49:27,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:27,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:49:27,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:49:27,379 INFO L87 Difference]: Start difference. First operand 4903 states and 7729 transitions. Second operand has 16 states, 16 states have (on average 12.0) internal successors, (192), 16 states have internal predecessors, (192), 3 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 3 states have call predecessors, (155), 3 states have call successors, (155) [2023-11-06 22:49:35,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:35,933 INFO L93 Difference]: Finished difference Result 26448 states and 41031 transitions. [2023-11-06 22:49:35,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-06 22:49:35,934 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.0) internal successors, (192), 16 states have internal predecessors, (192), 3 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 3 states have call predecessors, (155), 3 states have call successors, (155) Word has length 585 [2023-11-06 22:49:35,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:36,046 INFO L225 Difference]: With dead ends: 26448 [2023-11-06 22:49:36,046 INFO L226 Difference]: Without dead ends: 21548 [2023-11-06 22:49:36,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1212 GetRequests, 1160 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=679, Invalid=2183, Unknown=0, NotChecked=0, Total=2862 [2023-11-06 22:49:36,069 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 2725 mSDsluCounter, 3165 mSDsCounter, 0 mSdLazyCounter, 2721 mSolverCounterSat, 1062 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2783 SdHoareTripleChecker+Valid, 3719 SdHoareTripleChecker+Invalid, 3783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1062 IncrementalHoareTripleChecker+Valid, 2721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:36,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2783 Valid, 3719 Invalid, 3783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1062 Valid, 2721 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-06 22:49:36,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21548 states. [2023-11-06 22:49:37,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21548 to 6330. [2023-11-06 22:49:37,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6330 states, 4780 states have (on average 1.4949790794979079) internal successors, (7146), 4860 states have internal predecessors, (7146), 1453 states have call successors, (1453), 96 states have call predecessors, (1453), 96 states have return successors, (1453), 1373 states have call predecessors, (1453), 1453 states have call successors, (1453) [2023-11-06 22:49:37,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6330 states to 6330 states and 10052 transitions. [2023-11-06 22:49:37,976 INFO L78 Accepts]: Start accepts. Automaton has 6330 states and 10052 transitions. Word has length 585 [2023-11-06 22:49:37,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:37,978 INFO L495 AbstractCegarLoop]: Abstraction has 6330 states and 10052 transitions. [2023-11-06 22:49:37,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.0) internal successors, (192), 16 states have internal predecessors, (192), 3 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 3 states have call predecessors, (155), 3 states have call successors, (155) [2023-11-06 22:49:37,978 INFO L276 IsEmpty]: Start isEmpty. Operand 6330 states and 10052 transitions. [2023-11-06 22:49:37,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2023-11-06 22:49:37,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:37,992 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:38,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:38,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:38,200 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:38,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:38,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1968421276, now seen corresponding path program 1 times [2023-11-06 22:49:38,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:38,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052014577] [2023-11-06 22:49:38,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:38,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:38,275 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:49:38,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440127337] [2023-11-06 22:49:38,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:38,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:38,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:38,277 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:38,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:49:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:38,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:49:38,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:39,397 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 5175 proven. 48 refuted. 0 times theorem prover too weak. 12261 trivial. 0 not checked. [2023-11-06 22:49:39,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:40,583 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2023-11-06 22:49:40,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:40,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052014577] [2023-11-06 22:49:40,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:49:40,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440127337] [2023-11-06 22:49:40,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440127337] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:40,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:49:40,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-06 22:49:40,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308462324] [2023-11-06 22:49:40,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:40,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:49:40,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:40,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:49:40,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:49:40,589 INFO L87 Difference]: Start difference. First operand 6330 states and 10052 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-11-06 22:49:45,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:45,596 INFO L93 Difference]: Finished difference Result 25343 states and 39820 transitions. [2023-11-06 22:49:45,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:49:45,597 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 585 [2023-11-06 22:49:45,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:45,683 INFO L225 Difference]: With dead ends: 25343 [2023-11-06 22:49:45,683 INFO L226 Difference]: Without dead ends: 19066 [2023-11-06 22:49:45,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1171 GetRequests, 1159 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:49:45,709 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1309 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:45,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1309 Valid, 1548 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:49:45,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19066 states. [2023-11-06 22:49:48,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19066 to 11602. [2023-11-06 22:49:48,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11602 states, 8801 states have (on average 1.4993750710146574) internal successors, (13196), 8945 states have internal predecessors, (13196), 2619 states have call successors, (2619), 181 states have call predecessors, (2619), 181 states have return successors, (2619), 2475 states have call predecessors, (2619), 2619 states have call successors, (2619) [2023-11-06 22:49:48,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11602 states to 11602 states and 18434 transitions. [2023-11-06 22:49:48,287 INFO L78 Accepts]: Start accepts. Automaton has 11602 states and 18434 transitions. Word has length 585 [2023-11-06 22:49:48,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:48,289 INFO L495 AbstractCegarLoop]: Abstraction has 11602 states and 18434 transitions. [2023-11-06 22:49:48,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 1 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2023-11-06 22:49:48,289 INFO L276 IsEmpty]: Start isEmpty. Operand 11602 states and 18434 transitions. [2023-11-06 22:49:48,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2023-11-06 22:49:48,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:48,310 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:48,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:48,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 22:49:48,519 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:48,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:48,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1831368220, now seen corresponding path program 1 times [2023-11-06 22:49:48,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:48,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380883197] [2023-11-06 22:49:48,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:48,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:48,596 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:49:48,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839239330] [2023-11-06 22:49:48,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:48,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:48,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:48,599 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:48,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:49:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:49,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-06 22:49:49,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:52,209 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 10979 proven. 225 refuted. 0 times theorem prover too weak. 6280 trivial. 0 not checked. [2023-11-06 22:49:52,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:55,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:55,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380883197] [2023-11-06 22:49:55,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:49:55,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839239330] [2023-11-06 22:49:55,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839239330] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:55,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:49:55,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-06 22:49:55,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088808511] [2023-11-06 22:49:55,769 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:55,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:49:55,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:55,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:49:55,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:49:55,772 INFO L87 Difference]: Start difference. First operand 11602 states and 18434 transitions. Second operand has 15 states, 15 states have (on average 8.666666666666666) internal successors, (130), 14 states have internal predecessors, (130), 3 states have call successors, (94), 3 states have call predecessors, (94), 5 states have return successors, (94), 3 states have call predecessors, (94), 3 states have call successors, (94) [2023-11-06 22:50:10,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:10,068 INFO L93 Difference]: Finished difference Result 49263 states and 77552 transitions. [2023-11-06 22:50:10,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-06 22:50:10,068 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.666666666666666) internal successors, (130), 14 states have internal predecessors, (130), 3 states have call successors, (94), 3 states have call predecessors, (94), 5 states have return successors, (94), 3 states have call predecessors, (94), 3 states have call successors, (94) Word has length 585 [2023-11-06 22:50:10,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:10,213 INFO L225 Difference]: With dead ends: 49263 [2023-11-06 22:50:10,214 INFO L226 Difference]: Without dead ends: 37714 [2023-11-06 22:50:10,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=565, Invalid=1787, Unknown=0, NotChecked=0, Total=2352 [2023-11-06 22:50:10,257 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 2771 mSDsluCounter, 2140 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2827 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:10,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2827 Valid, 2490 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2367 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-06 22:50:10,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37714 states. [2023-11-06 22:50:16,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37714 to 23226. [2023-11-06 22:50:16,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23226 states, 17652 states have (on average 1.4988103331067302) internal successors, (26457), 17939 states have internal predecessors, (26457), 5213 states have call successors, (5213), 360 states have call predecessors, (5213), 360 states have return successors, (5213), 4926 states have call predecessors, (5213), 5213 states have call successors, (5213) [2023-11-06 22:50:16,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23226 states to 23226 states and 36883 transitions. [2023-11-06 22:50:16,211 INFO L78 Accepts]: Start accepts. Automaton has 23226 states and 36883 transitions. Word has length 585 [2023-11-06 22:50:16,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:16,212 INFO L495 AbstractCegarLoop]: Abstraction has 23226 states and 36883 transitions. [2023-11-06 22:50:16,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.666666666666666) internal successors, (130), 14 states have internal predecessors, (130), 3 states have call successors, (94), 3 states have call predecessors, (94), 5 states have return successors, (94), 3 states have call predecessors, (94), 3 states have call successors, (94) [2023-11-06 22:50:16,213 INFO L276 IsEmpty]: Start isEmpty. Operand 23226 states and 36883 transitions. [2023-11-06 22:50:16,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2023-11-06 22:50:16,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:16,260 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:16,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:16,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:50:16,470 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:50:16,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:16,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1710872974, now seen corresponding path program 1 times [2023-11-06 22:50:16,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:16,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384571014] [2023-11-06 22:50:16,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:16,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:16,745 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:50:16,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1115107010] [2023-11-06 22:50:16,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:16,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:50:16,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:50:16,751 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:50:16,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_150e8c31-a203-4461-a9d1-fa960dbc9017/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:50:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:17,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:50:17,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:18,357 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 8079 proven. 180 refuted. 0 times theorem prover too weak. 9225 trivial. 0 not checked. [2023-11-06 22:50:18,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:19,224 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 99 proven. 180 refuted. 0 times theorem prover too weak. 17205 trivial. 0 not checked. [2023-11-06 22:50:19,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:19,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384571014] [2023-11-06 22:50:19,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:50:19,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115107010] [2023-11-06 22:50:19,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115107010] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:50:19,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:50:19,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-11-06 22:50:19,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67796881] [2023-11-06 22:50:19,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:50:19,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-06 22:50:19,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:19,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-06 22:50:19,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:50:19,229 INFO L87 Difference]: Start difference. First operand 23226 states and 36883 transitions. Second operand has 22 states, 22 states have (on average 8.818181818181818) internal successors, (194), 22 states have internal predecessors, (194), 3 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 3 states have call predecessors, (155), 3 states have call successors, (155) [2023-11-06 22:51:08,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:51:08,080 INFO L93 Difference]: Finished difference Result 186174 states and 288480 transitions. [2023-11-06 22:51:08,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-11-06 22:51:08,081 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.818181818181818) internal successors, (194), 22 states have internal predecessors, (194), 3 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 3 states have call predecessors, (155), 3 states have call successors, (155) Word has length 586 [2023-11-06 22:51:08,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:51:08,862 INFO L225 Difference]: With dead ends: 186174 [2023-11-06 22:51:08,862 INFO L226 Difference]: Without dead ends: 163001 [2023-11-06 22:51:08,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1247 GetRequests, 1160 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2160 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1661, Invalid=6171, Unknown=0, NotChecked=0, Total=7832 [2023-11-06 22:51:08,971 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 2706 mSDsluCounter, 4796 mSDsCounter, 0 mSdLazyCounter, 4197 mSolverCounterSat, 1096 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2764 SdHoareTripleChecker+Valid, 5275 SdHoareTripleChecker+Invalid, 5293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1096 IncrementalHoareTripleChecker+Valid, 4197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:51:08,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2764 Valid, 5275 Invalid, 5293 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1096 Valid, 4197 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-06 22:51:09,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163001 states.