./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-20.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 36737b7958ca72f0774fc0f7ccab03861500afa24766b605f5269ead47c0b677 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:01:54,935 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:01:55,007 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:01:55,013 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:01:55,014 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:01:55,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:01:55,039 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:01:55,040 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:01:55,041 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:01:55,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:01:55,043 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:01:55,043 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:01:55,044 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:01:55,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:01:55,046 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:01:55,046 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:01:55,050 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:01:55,053 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:01:55,054 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:01:55,054 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:01:55,057 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:01:55,058 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:01:55,058 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:01:55,059 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:01:55,059 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:01:55,060 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:01:55,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:01:55,061 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:01:55,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:55,062 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:01:55,063 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:01:55,064 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:01:55,065 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:01:55,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:01:55,066 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:01:55,066 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:01:55,066 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:01:55,067 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:01:55,067 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:01:55,067 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_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36737b7958ca72f0774fc0f7ccab03861500afa24766b605f5269ead47c0b677 [2023-11-19 08:01:55,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:01:55,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:01:55,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:01:55,360 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:01:55,361 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:01:55,362 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-20.i [2023-11-19 08:01:58,561 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:01:58,772 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:01:58,773 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-20.i [2023-11-19 08:01:58,795 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/data/ae25f67a9/8b4424abba664f1e8d159fcbcf2e25e4/FLAGd0d38716c [2023-11-19 08:01:58,811 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/data/ae25f67a9/8b4424abba664f1e8d159fcbcf2e25e4 [2023-11-19 08:01:58,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:01:58,820 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:01:58,824 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:58,824 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:01:58,829 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:01:58,832 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:58" (1/1) ... [2023-11-19 08:01:58,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37250ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:58, skipping insertion in model container [2023-11-19 08:01:58,833 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:58" (1/1) ... [2023-11-19 08:01:58,884 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:01:59,054 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_c0e1cd64-ac05-43e4-9bd0-91f33db503de/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-20.i[916,929] [2023-11-19 08:01:59,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:59,177 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:01:59,188 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_c0e1cd64-ac05-43e4-9bd0-91f33db503de/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-20.i[916,929] [2023-11-19 08:01:59,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:59,278 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:01:59,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:59 WrapperNode [2023-11-19 08:01:59,280 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:59,281 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:59,281 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:01:59,286 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:01:59,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:59" (1/1) ... [2023-11-19 08:01:59,317 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:59" (1/1) ... [2023-11-19 08:01:59,368 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 247 [2023-11-19 08:01:59,369 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:59,369 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:01:59,370 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:01:59,370 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:01:59,384 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:59" (1/1) ... [2023-11-19 08:01:59,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:59" (1/1) ... [2023-11-19 08:01:59,394 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:59" (1/1) ... [2023-11-19 08:01:59,395 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:59" (1/1) ... [2023-11-19 08:01:59,420 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:59" (1/1) ... [2023-11-19 08:01:59,424 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:59" (1/1) ... [2023-11-19 08:01:59,429 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:59" (1/1) ... [2023-11-19 08:01:59,432 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:59" (1/1) ... [2023-11-19 08:01:59,440 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:01:59,441 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:01:59,441 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:01:59,441 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:01:59,442 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:59" (1/1) ... [2023-11-19 08:01:59,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:59,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:59,476 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:59,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:01:59,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:01:59,525 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:01:59,526 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:01:59,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:01:59,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:01:59,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:01:59,665 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:01:59,668 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:02:00,384 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:02:00,394 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:02:00,394 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:02:00,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:00 BoogieIcfgContainer [2023-11-19 08:02:00,399 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:02:00,402 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:02:00,402 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:02:00,406 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:02:00,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:01:58" (1/3) ... [2023-11-19 08:02:00,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a831cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:00, skipping insertion in model container [2023-11-19 08:02:00,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:59" (2/3) ... [2023-11-19 08:02:00,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a831cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:00, skipping insertion in model container [2023-11-19 08:02:00,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:00" (3/3) ... [2023-11-19 08:02:00,409 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-20.i [2023-11-19 08:02:00,433 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:02:00,434 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:02:00,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:02:00,510 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@33854211, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:02:00,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:02:00,517 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 78 states have (on average 1.4615384615384615) internal successors, (114), 79 states have internal predecessors, (114), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 08:02:00,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-19 08:02:00,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:00,540 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:00,541 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:00,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:00,546 INFO L85 PathProgramCache]: Analyzing trace with hash 2037680914, now seen corresponding path program 1 times [2023-11-19 08:02:00,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:00,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833571689] [2023-11-19 08:02:00,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:00,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:00,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:00,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833571689] [2023-11-19 08:02:00,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:02:00,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600341753] [2023-11-19 08:02:00,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:00,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:00,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:00,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:00,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:02:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:01,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:02:01,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2023-11-19 08:02:01,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:01,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600341753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:01,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:01,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:02:01,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193518383] [2023-11-19 08:02:01,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:01,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:02:01,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:01,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:02:01,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:02:01,300 INFO L87 Difference]: Start difference. First operand has 112 states, 78 states have (on average 1.4615384615384615) internal successors, (114), 79 states have internal predecessors, (114), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-19 08:02:01,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:01,346 INFO L93 Difference]: Finished difference Result 217 states and 377 transitions. [2023-11-19 08:02:01,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:02:01,348 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 204 [2023-11-19 08:02:01,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:01,358 INFO L225 Difference]: With dead ends: 217 [2023-11-19 08:02:01,359 INFO L226 Difference]: Without dead ends: 108 [2023-11-19 08:02:01,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:02:01,368 INFO L413 NwaCegarLoop]: 169 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, 169 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:01,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:02:01,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-19 08:02:01,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-11-19 08:02:01,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 75 states have (on average 1.4266666666666667) internal successors, (107), 75 states have internal predecessors, (107), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 08:02:01,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 169 transitions. [2023-11-19 08:02:01,427 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 169 transitions. Word has length 204 [2023-11-19 08:02:01,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:01,428 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 169 transitions. [2023-11-19 08:02:01,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-19 08:02:01,428 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 169 transitions. [2023-11-19 08:02:01,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-19 08:02:01,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:01,435 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:01,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:01,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 08:02:01,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:01,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:01,652 INFO L85 PathProgramCache]: Analyzing trace with hash 398149144, now seen corresponding path program 1 times [2023-11-19 08:02:01,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:01,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668894125] [2023-11-19 08:02:01,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:01,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:01,808 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:01,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [713655138] [2023-11-19 08:02:01,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:01,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:01,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:01,821 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:01,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:02:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:02,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:02:02,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-19 08:02:02,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:02,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:02,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668894125] [2023-11-19 08:02:02,536 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:02,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713655138] [2023-11-19 08:02:02,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713655138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:02,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:02,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:02:02,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850186979] [2023-11-19 08:02:02,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:02,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:02:02,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:02,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:02:02,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:02:02,543 INFO L87 Difference]: Start difference. First operand 108 states and 169 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 08:02:02,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:02,822 INFO L93 Difference]: Finished difference Result 353 states and 554 transitions. [2023-11-19 08:02:02,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:02:02,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 204 [2023-11-19 08:02:02,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:02,828 INFO L225 Difference]: With dead ends: 353 [2023-11-19 08:02:02,829 INFO L226 Difference]: Without dead ends: 248 [2023-11-19 08:02:02,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:02,832 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 161 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:02,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 514 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:02:02,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-11-19 08:02:02,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 237. [2023-11-19 08:02:02,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 172 states have (on average 1.4186046511627908) internal successors, (244), 172 states have internal predecessors, (244), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-19 08:02:02,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 368 transitions. [2023-11-19 08:02:02,886 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 368 transitions. Word has length 204 [2023-11-19 08:02:02,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:02,889 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 368 transitions. [2023-11-19 08:02:02,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 08:02:02,890 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 368 transitions. [2023-11-19 08:02:02,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-19 08:02:02,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:02,899 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:02,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:03,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:03,103 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:03,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:03,104 INFO L85 PathProgramCache]: Analyzing trace with hash 304868735, now seen corresponding path program 1 times [2023-11-19 08:02:03,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:03,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130022193] [2023-11-19 08:02:03,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:03,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:03,199 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:03,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005586077] [2023-11-19 08:02:03,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:03,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:03,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:03,215 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:03,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:02:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:03,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-19 08:02:03,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 670 proven. 321 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2023-11-19 08:02:06,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 48 proven. 129 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2023-11-19 08:02:09,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:09,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130022193] [2023-11-19 08:02:09,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:09,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005586077] [2023-11-19 08:02:09,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005586077] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:09,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:02:09,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12] total 31 [2023-11-19 08:02:09,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801250360] [2023-11-19 08:02:09,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:09,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-19 08:02:09,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:09,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-19 08:02:09,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2023-11-19 08:02:09,624 INFO L87 Difference]: Start difference. First operand 237 states and 368 transitions. Second operand has 31 states, 30 states have (on average 3.8333333333333335) internal successors, (115), 28 states have internal predecessors, (115), 8 states have call successors, (57), 6 states have call predecessors, (57), 10 states have return successors, (58), 8 states have call predecessors, (58), 8 states have call successors, (58) [2023-11-19 08:02:18,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:18,479 INFO L93 Difference]: Finished difference Result 738 states and 1067 transitions. [2023-11-19 08:02:18,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-11-19 08:02:18,482 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.8333333333333335) internal successors, (115), 28 states have internal predecessors, (115), 8 states have call successors, (57), 6 states have call predecessors, (57), 10 states have return successors, (58), 8 states have call predecessors, (58), 8 states have call successors, (58) Word has length 205 [2023-11-19 08:02:18,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:18,495 INFO L225 Difference]: With dead ends: 738 [2023-11-19 08:02:18,495 INFO L226 Difference]: Without dead ends: 615 [2023-11-19 08:02:18,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2580 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1746, Invalid=6996, Unknown=0, NotChecked=0, Total=8742 [2023-11-19 08:02:18,502 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 1367 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 2745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:18,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 1725 Invalid, 2745 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [366 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-19 08:02:18,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2023-11-19 08:02:18,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 478. [2023-11-19 08:02:18,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 355 states have (on average 1.3661971830985915) internal successors, (485), 358 states have internal predecessors, (485), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (101), 98 states have call predecessors, (101), 101 states have call successors, (101) [2023-11-19 08:02:18,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 687 transitions. [2023-11-19 08:02:18,606 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 687 transitions. Word has length 205 [2023-11-19 08:02:18,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:18,607 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 687 transitions. [2023-11-19 08:02:18,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.8333333333333335) internal successors, (115), 28 states have internal predecessors, (115), 8 states have call successors, (57), 6 states have call predecessors, (57), 10 states have return successors, (58), 8 states have call predecessors, (58), 8 states have call successors, (58) [2023-11-19 08:02:18,608 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 687 transitions. [2023-11-19 08:02:18,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-19 08:02:18,612 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:18,613 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:18,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:18,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:18,821 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:18,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:18,821 INFO L85 PathProgramCache]: Analyzing trace with hash -706248515, now seen corresponding path program 1 times [2023-11-19 08:02:18,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:18,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227150851] [2023-11-19 08:02:18,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:18,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:18,907 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:18,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840857197] [2023-11-19 08:02:18,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:18,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:18,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:18,919 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:18,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:02:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:19,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 08:02:19,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:19,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-19 08:02:19,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:19,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:19,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227150851] [2023-11-19 08:02:19,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:19,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840857197] [2023-11-19 08:02:19,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840857197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:19,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:19,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 08:02:19,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278610086] [2023-11-19 08:02:19,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:19,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:02:19,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:19,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:02:19,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:02:19,604 INFO L87 Difference]: Start difference. First operand 478 states and 687 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 08:02:20,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:20,255 INFO L93 Difference]: Finished difference Result 1463 states and 2139 transitions. [2023-11-19 08:02:20,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:02:20,256 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 205 [2023-11-19 08:02:20,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:20,266 INFO L225 Difference]: With dead ends: 1463 [2023-11-19 08:02:20,267 INFO L226 Difference]: Without dead ends: 999 [2023-11-19 08:02:20,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-11-19 08:02:20,270 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 301 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:20,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 716 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:02:20,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2023-11-19 08:02:20,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 729. [2023-11-19 08:02:20,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 606 states have (on average 1.4372937293729373) internal successors, (871), 609 states have internal predecessors, (871), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (101), 98 states have call predecessors, (101), 101 states have call successors, (101) [2023-11-19 08:02:20,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1073 transitions. [2023-11-19 08:02:20,364 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1073 transitions. Word has length 205 [2023-11-19 08:02:20,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:20,365 INFO L495 AbstractCegarLoop]: Abstraction has 729 states and 1073 transitions. [2023-11-19 08:02:20,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 08:02:20,366 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1073 transitions. [2023-11-19 08:02:20,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-19 08:02:20,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:20,370 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:20,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:20,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:20,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:20,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:20,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1523896965, now seen corresponding path program 1 times [2023-11-19 08:02:20,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:20,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984259580] [2023-11-19 08:02:20,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:20,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:20,653 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:20,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [722834012] [2023-11-19 08:02:20,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:20,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:20,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:20,656 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:20,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:02:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:20,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 08:02:20,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:21,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 872 proven. 114 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2023-11-19 08:02:21,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-11-19 08:02:22,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:22,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984259580] [2023-11-19 08:02:22,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:22,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722834012] [2023-11-19 08:02:22,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722834012] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:22,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:02:22,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 15 [2023-11-19 08:02:22,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458536918] [2023-11-19 08:02:22,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:22,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 08:02:22,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:22,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 08:02:22,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-19 08:02:22,273 INFO L87 Difference]: Start difference. First operand 729 states and 1073 transitions. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 14 states have internal predecessors, (94), 5 states have call successors, (62), 4 states have call predecessors, (62), 6 states have return successors, (62), 5 states have call predecessors, (62), 5 states have call successors, (62) [2023-11-19 08:02:24,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:24,027 INFO L93 Difference]: Finished difference Result 1694 states and 2405 transitions. [2023-11-19 08:02:24,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 08:02:24,028 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 14 states have internal predecessors, (94), 5 states have call successors, (62), 4 states have call predecessors, (62), 6 states have return successors, (62), 5 states have call predecessors, (62), 5 states have call successors, (62) Word has length 205 [2023-11-19 08:02:24,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:24,038 INFO L225 Difference]: With dead ends: 1694 [2023-11-19 08:02:24,039 INFO L226 Difference]: Without dead ends: 979 [2023-11-19 08:02:24,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=296, Invalid=760, Unknown=0, NotChecked=0, Total=1056 [2023-11-19 08:02:24,043 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 721 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:24,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 822 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 08:02:24,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2023-11-19 08:02:24,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 820. [2023-11-19 08:02:24,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 599 states have (on average 1.2954924874791318) internal successors, (776), 604 states have internal predecessors, (776), 174 states have call successors, (174), 46 states have call predecessors, (174), 46 states have return successors, (174), 169 states have call predecessors, (174), 174 states have call successors, (174) [2023-11-19 08:02:24,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1124 transitions. [2023-11-19 08:02:24,327 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1124 transitions. Word has length 205 [2023-11-19 08:02:24,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:24,328 INFO L495 AbstractCegarLoop]: Abstraction has 820 states and 1124 transitions. [2023-11-19 08:02:24,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 14 states have internal predecessors, (94), 5 states have call successors, (62), 4 states have call predecessors, (62), 6 states have return successors, (62), 5 states have call predecessors, (62), 5 states have call successors, (62) [2023-11-19 08:02:24,328 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1124 transitions. [2023-11-19 08:02:24,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-19 08:02:24,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:24,332 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:24,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:24,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:24,559 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:24,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:24,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1359830923, now seen corresponding path program 1 times [2023-11-19 08:02:24,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:24,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386902015] [2023-11-19 08:02:24,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:24,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:24,611 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:24,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555331207] [2023-11-19 08:02:24,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:24,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:24,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:24,619 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:24,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:02:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:24,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 08:02:24,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 872 proven. 114 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2023-11-19 08:02:25,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-11-19 08:02:26,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:26,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386902015] [2023-11-19 08:02:26,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:26,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555331207] [2023-11-19 08:02:26,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555331207] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:26,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:02:26,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2023-11-19 08:02:26,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756678591] [2023-11-19 08:02:26,371 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:26,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 08:02:26,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:26,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 08:02:26,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2023-11-19 08:02:26,375 INFO L87 Difference]: Start difference. First operand 820 states and 1124 transitions. Second operand has 20 states, 20 states have (on average 5.4) internal successors, (108), 19 states have internal predecessors, (108), 5 states have call successors, (62), 4 states have call predecessors, (62), 6 states have return successors, (62), 5 states have call predecessors, (62), 5 states have call successors, (62) [2023-11-19 08:02:29,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:29,648 INFO L93 Difference]: Finished difference Result 2416 states and 3357 transitions. [2023-11-19 08:02:29,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-19 08:02:29,649 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.4) internal successors, (108), 19 states have internal predecessors, (108), 5 states have call successors, (62), 4 states have call predecessors, (62), 6 states have return successors, (62), 5 states have call predecessors, (62), 5 states have call successors, (62) Word has length 206 [2023-11-19 08:02:29,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:29,660 INFO L225 Difference]: With dead ends: 2416 [2023-11-19 08:02:29,660 INFO L226 Difference]: Without dead ends: 1693 [2023-11-19 08:02:29,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=585, Invalid=2171, Unknown=0, NotChecked=0, Total=2756 [2023-11-19 08:02:29,665 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 1699 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 600 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 1796 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:29,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 1796 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-19 08:02:29,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2023-11-19 08:02:29,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 981. [2023-11-19 08:02:29,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 750 states have (on average 1.3186666666666667) internal successors, (989), 757 states have internal predecessors, (989), 182 states have call successors, (182), 48 states have call predecessors, (182), 48 states have return successors, (182), 175 states have call predecessors, (182), 182 states have call successors, (182) [2023-11-19 08:02:29,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1353 transitions. [2023-11-19 08:02:29,844 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1353 transitions. Word has length 206 [2023-11-19 08:02:29,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:29,845 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1353 transitions. [2023-11-19 08:02:29,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.4) internal successors, (108), 19 states have internal predecessors, (108), 5 states have call successors, (62), 4 states have call predecessors, (62), 6 states have return successors, (62), 5 states have call predecessors, (62), 5 states have call successors, (62) [2023-11-19 08:02:29,845 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1353 transitions. [2023-11-19 08:02:29,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-19 08:02:29,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:29,849 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:29,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:30,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:30,071 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:30,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:30,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1129698039, now seen corresponding path program 1 times [2023-11-19 08:02:30,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:30,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012448052] [2023-11-19 08:02:30,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:30,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:30,114 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:30,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [917111332] [2023-11-19 08:02:30,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:30,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:30,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:30,116 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:30,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:02:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:30,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 08:02:30,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:30,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 482 proven. 150 refuted. 0 times theorem prover too weak. 1228 trivial. 0 not checked. [2023-11-19 08:02:30,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:31,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 12 proven. 78 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-11-19 08:02:31,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:31,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012448052] [2023-11-19 08:02:31,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:31,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917111332] [2023-11-19 08:02:31,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917111332] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:31,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:02:31,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2023-11-19 08:02:31,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598996844] [2023-11-19 08:02:31,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:31,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 08:02:31,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:31,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 08:02:31,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:02:31,242 INFO L87 Difference]: Start difference. First operand 981 states and 1353 transitions. Second operand has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 states have internal predecessors, (86), 4 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-11-19 08:02:32,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:32,670 INFO L93 Difference]: Finished difference Result 2448 states and 3371 transitions. [2023-11-19 08:02:32,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-19 08:02:32,671 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 states have internal predecessors, (86), 4 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) Word has length 206 [2023-11-19 08:02:32,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:32,681 INFO L225 Difference]: With dead ends: 2448 [2023-11-19 08:02:32,681 INFO L226 Difference]: Without dead ends: 1569 [2023-11-19 08:02:32,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=359, Invalid=901, Unknown=0, NotChecked=0, Total=1260 [2023-11-19 08:02:32,686 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 605 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:32,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 536 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 08:02:32,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2023-11-19 08:02:32,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1038. [2023-11-19 08:02:32,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 807 states have (on average 1.3246592317224288) internal successors, (1069), 814 states have internal predecessors, (1069), 182 states have call successors, (182), 48 states have call predecessors, (182), 48 states have return successors, (182), 175 states have call predecessors, (182), 182 states have call successors, (182) [2023-11-19 08:02:32,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1433 transitions. [2023-11-19 08:02:32,872 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1433 transitions. Word has length 206 [2023-11-19 08:02:32,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:32,872 INFO L495 AbstractCegarLoop]: Abstraction has 1038 states and 1433 transitions. [2023-11-19 08:02:32,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 states have internal predecessors, (86), 4 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-11-19 08:02:32,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1433 transitions. [2023-11-19 08:02:32,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-19 08:02:32,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:32,876 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:32,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:33,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:33,099 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:33,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:33,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1801612604, now seen corresponding path program 1 times [2023-11-19 08:02:33,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:33,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365900805] [2023-11-19 08:02:33,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:33,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:33,133 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:33,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913369417] [2023-11-19 08:02:33,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:33,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:33,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:33,135 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:33,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 08:02:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:33,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 08:02:33,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-19 08:02:33,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:33,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:33,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365900805] [2023-11-19 08:02:33,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:33,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913369417] [2023-11-19 08:02:33,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913369417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:33,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:33,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 08:02:33,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111139442] [2023-11-19 08:02:33,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:33,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:02:33,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:33,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:02:33,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:02:33,729 INFO L87 Difference]: Start difference. First operand 1038 states and 1433 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 08:02:34,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:34,427 INFO L93 Difference]: Finished difference Result 2387 states and 3353 transitions. [2023-11-19 08:02:34,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 08:02:34,428 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 207 [2023-11-19 08:02:34,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:34,439 INFO L225 Difference]: With dead ends: 2387 [2023-11-19 08:02:34,440 INFO L226 Difference]: Without dead ends: 1815 [2023-11-19 08:02:34,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2023-11-19 08:02:34,444 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 236 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:34,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 743 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:02:34,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2023-11-19 08:02:34,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1284. [2023-11-19 08:02:34,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1053 states have (on average 1.3447293447293447) internal successors, (1416), 1060 states have internal predecessors, (1416), 182 states have call successors, (182), 48 states have call predecessors, (182), 48 states have return successors, (182), 175 states have call predecessors, (182), 182 states have call successors, (182) [2023-11-19 08:02:34,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1780 transitions. [2023-11-19 08:02:34,665 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1780 transitions. Word has length 207 [2023-11-19 08:02:34,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:34,665 INFO L495 AbstractCegarLoop]: Abstraction has 1284 states and 1780 transitions. [2023-11-19 08:02:34,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 08:02:34,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1780 transitions. [2023-11-19 08:02:34,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-19 08:02:34,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:34,672 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:34,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:34,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:34,898 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:34,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:34,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1675706242, now seen corresponding path program 1 times [2023-11-19 08:02:34,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:34,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851954594] [2023-11-19 08:02:34,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:34,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:34,932 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:34,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1944646481] [2023-11-19 08:02:34,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:34,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:34,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:34,934 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:34,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 08:02:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:35,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 08:02:35,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:35,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-19 08:02:35,462 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:35,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:35,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851954594] [2023-11-19 08:02:35,463 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:35,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944646481] [2023-11-19 08:02:35,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944646481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:35,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:35,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 08:02:35,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327937882] [2023-11-19 08:02:35,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:35,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:02:35,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:35,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:02:35,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:02:35,466 INFO L87 Difference]: Start difference. First operand 1284 states and 1780 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 08:02:36,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:36,308 INFO L93 Difference]: Finished difference Result 2843 states and 3952 transitions. [2023-11-19 08:02:36,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 08:02:36,309 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 207 [2023-11-19 08:02:36,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:36,321 INFO L225 Difference]: With dead ends: 2843 [2023-11-19 08:02:36,321 INFO L226 Difference]: Without dead ends: 1899 [2023-11-19 08:02:36,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-11-19 08:02:36,327 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 242 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:36,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 947 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 08:02:36,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2023-11-19 08:02:36,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1415. [2023-11-19 08:02:36,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1184 states have (on average 1.337837837837838) internal successors, (1584), 1191 states have internal predecessors, (1584), 182 states have call successors, (182), 48 states have call predecessors, (182), 48 states have return successors, (182), 175 states have call predecessors, (182), 182 states have call successors, (182) [2023-11-19 08:02:36,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 1948 transitions. [2023-11-19 08:02:36,506 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 1948 transitions. Word has length 207 [2023-11-19 08:02:36,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:36,506 INFO L495 AbstractCegarLoop]: Abstraction has 1415 states and 1948 transitions. [2023-11-19 08:02:36,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 08:02:36,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 1948 transitions. [2023-11-19 08:02:36,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-19 08:02:36,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:36,509 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:36,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-19 08:02:36,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:36,716 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:36,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:36,717 INFO L85 PathProgramCache]: Analyzing trace with hash -956273119, now seen corresponding path program 1 times [2023-11-19 08:02:36,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:36,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757071521] [2023-11-19 08:02:36,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:36,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:36,752 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:36,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [575419392] [2023-11-19 08:02:36,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:36,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:36,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:36,754 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:36,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 08:02:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:36,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:02:36,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:36,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-19 08:02:36,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:36,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:36,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757071521] [2023-11-19 08:02:36,990 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:36,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575419392] [2023-11-19 08:02:36,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575419392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:36,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:36,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:02:36,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670479288] [2023-11-19 08:02:36,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:36,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:36,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:36,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:36,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:36,992 INFO L87 Difference]: Start difference. First operand 1415 states and 1948 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 08:02:37,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:37,323 INFO L93 Difference]: Finished difference Result 2382 states and 3253 transitions. [2023-11-19 08:02:37,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:37,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 208 [2023-11-19 08:02:37,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:37,337 INFO L225 Difference]: With dead ends: 2382 [2023-11-19 08:02:37,337 INFO L226 Difference]: Without dead ends: 1540 [2023-11-19 08:02:37,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:37,340 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 158 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:37,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 361 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:02:37,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2023-11-19 08:02:37,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1302. [2023-11-19 08:02:37,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1050 states have (on average 1.2923809523809524) internal successors, (1357), 1056 states have internal predecessors, (1357), 202 states have call successors, (202), 49 states have call predecessors, (202), 49 states have return successors, (202), 196 states have call predecessors, (202), 202 states have call successors, (202) [2023-11-19 08:02:37,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 1761 transitions. [2023-11-19 08:02:37,523 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 1761 transitions. Word has length 208 [2023-11-19 08:02:37,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:37,524 INFO L495 AbstractCegarLoop]: Abstraction has 1302 states and 1761 transitions. [2023-11-19 08:02:37,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 08:02:37,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 1761 transitions. [2023-11-19 08:02:37,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-19 08:02:37,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:37,527 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:37,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:37,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 08:02:37,747 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:37,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:37,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1825344144, now seen corresponding path program 1 times [2023-11-19 08:02:37,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:37,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410260734] [2023-11-19 08:02:37,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:37,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:37,780 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:37,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37327530] [2023-11-19 08:02:37,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:37,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:37,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:37,782 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:37,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 08:02:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:38,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-19 08:02:38,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:40,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 670 proven. 321 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2023-11-19 08:02:40,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-19 08:02:42,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:42,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410260734] [2023-11-19 08:02:42,031 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:42,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37327530] [2023-11-19 08:02:42,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37327530] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:42,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:02:42,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [26] total 33 [2023-11-19 08:02:42,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565059607] [2023-11-19 08:02:42,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:42,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:02:42,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:42,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:02:42,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=826, Unknown=0, NotChecked=0, Total=1056 [2023-11-19 08:02:42,035 INFO L87 Difference]: Start difference. First operand 1302 states and 1761 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 08:02:42,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:42,879 INFO L93 Difference]: Finished difference Result 2155 states and 2912 transitions. [2023-11-19 08:02:42,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 08:02:42,880 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 208 [2023-11-19 08:02:42,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:42,891 INFO L225 Difference]: With dead ends: 2155 [2023-11-19 08:02:42,891 INFO L226 Difference]: Without dead ends: 1586 [2023-11-19 08:02:42,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=288, Invalid=1118, Unknown=0, NotChecked=0, Total=1406 [2023-11-19 08:02:42,895 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 317 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:42,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 705 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 08:02:42,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2023-11-19 08:02:43,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1285. [2023-11-19 08:02:43,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1033 states have (on average 1.2933204259438529) internal successors, (1336), 1039 states have internal predecessors, (1336), 202 states have call successors, (202), 49 states have call predecessors, (202), 49 states have return successors, (202), 196 states have call predecessors, (202), 202 states have call successors, (202) [2023-11-19 08:02:43,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1740 transitions. [2023-11-19 08:02:43,174 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1740 transitions. Word has length 208 [2023-11-19 08:02:43,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:43,175 INFO L495 AbstractCegarLoop]: Abstraction has 1285 states and 1740 transitions. [2023-11-19 08:02:43,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-19 08:02:43,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1740 transitions. [2023-11-19 08:02:43,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-19 08:02:43,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:43,180 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:43,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:43,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 08:02:43,388 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:43,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:43,388 INFO L85 PathProgramCache]: Analyzing trace with hash -2046921326, now seen corresponding path program 1 times [2023-11-19 08:02:43,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:43,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68360665] [2023-11-19 08:02:43,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:43,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:43,454 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:43,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932167468] [2023-11-19 08:02:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:43,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:43,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:43,457 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:43,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e1cd64-ac05-43e4-9bd0-91f33db503de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 08:02:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:43,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 08:02:43,722 INFO L285 TraceCheckSpWp]: Computing forward predicates...