./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/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_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/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_cb4a2ef8-4c15-4937-91ed-723d90955956/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 372612807ec8a09625942983a4318ea5cf13bd58b55643cc4c787d7ad1a0ebc5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:00:24,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:00:24,267 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:00:24,273 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:00:24,274 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:00:24,314 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:00:24,315 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:00:24,316 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:00:24,317 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:00:24,322 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:00:24,324 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:00:24,324 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:00:24,325 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:00:24,327 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:00:24,327 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:00:24,328 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:00:24,328 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:00:24,329 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:00:24,329 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:00:24,330 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:00:24,330 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:00:24,331 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:00:24,331 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:00:24,333 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:00:24,333 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:00:24,334 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:00:24,335 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:00:24,335 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:00:24,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:24,336 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:00:24,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:00:24,338 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:00:24,338 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:00:24,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:00:24,338 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:00:24,339 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:00:24,339 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:00:24,339 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:00:24,339 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:00:24,340 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_cb4a2ef8-4c15-4937-91ed-723d90955956/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 372612807ec8a09625942983a4318ea5cf13bd58b55643cc4c787d7ad1a0ebc5 [2023-11-19 08:00:24,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:00:24,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:00:24,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:00:24,681 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:00:24,682 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:00:24,683 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i [2023-11-19 08:00:28,052 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:00:28,340 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:00:28,340 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i [2023-11-19 08:00:28,361 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/data/88f9f3644/567dbd4bfe5c40079a966bf4204a4d29/FLAG0368effcb [2023-11-19 08:00:28,379 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/data/88f9f3644/567dbd4bfe5c40079a966bf4204a4d29 [2023-11-19 08:00:28,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:00:28,389 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:00:28,393 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:28,394 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:00:28,400 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:00:28,401 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:28" (1/1) ... [2023-11-19 08:00:28,402 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d0e40f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:28, skipping insertion in model container [2023-11-19 08:00:28,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:28" (1/1) ... [2023-11-19 08:00:28,473 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:00:28,648 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_cb4a2ef8-4c15-4937-91ed-723d90955956/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i[916,929] [2023-11-19 08:00:28,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:28,784 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:00:28,800 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_cb4a2ef8-4c15-4937-91ed-723d90955956/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i[916,929] [2023-11-19 08:00:28,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:28,964 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:00:28,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:28 WrapperNode [2023-11-19 08:00:28,965 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:28,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:28,967 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:00:28,967 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:00:28,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:28" (1/1) ... [2023-11-19 08:00:29,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:28" (1/1) ... [2023-11-19 08:00:29,083 INFO L138 Inliner]: procedures = 26, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 329 [2023-11-19 08:00:29,084 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:29,084 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:00:29,085 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:00:29,085 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:00:29,095 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:28" (1/1) ... [2023-11-19 08:00:29,096 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:28" (1/1) ... [2023-11-19 08:00:29,113 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:28" (1/1) ... [2023-11-19 08:00:29,117 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:28" (1/1) ... [2023-11-19 08:00:29,151 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:28" (1/1) ... [2023-11-19 08:00:29,170 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:28" (1/1) ... [2023-11-19 08:00:29,177 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:28" (1/1) ... [2023-11-19 08:00:29,186 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:28" (1/1) ... [2023-11-19 08:00:29,244 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:00:29,249 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:00:29,251 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:00:29,251 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:00:29,253 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:28" (1/1) ... [2023-11-19 08:00:29,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:29,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:29,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:29,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:00:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:00:29,359 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:00:29,359 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:00:29,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:00:29,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:00:29,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:00:29,510 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:00:29,512 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:00:30,284 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:00:30,296 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:00:30,296 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:00:30,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:30 BoogieIcfgContainer [2023-11-19 08:00:30,303 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:00:30,306 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:00:30,306 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:00:30,310 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:00:30,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:28" (1/3) ... [2023-11-19 08:00:30,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278f4ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:30, skipping insertion in model container [2023-11-19 08:00:30,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:28" (2/3) ... [2023-11-19 08:00:30,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278f4ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:30, skipping insertion in model container [2023-11-19 08:00:30,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:30" (3/3) ... [2023-11-19 08:00:30,314 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-56.i [2023-11-19 08:00:30,336 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:00:30,336 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:00:30,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:30,415 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;@66524150, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:30,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:00:30,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 139 states, 79 states have (on average 1.4303797468354431) internal successors, (113), 80 states have internal predecessors, (113), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-19 08:00:30,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-11-19 08:00:30,462 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:30,463 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:30,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:30,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:30,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1135091122, now seen corresponding path program 1 times [2023-11-19 08:00:30,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:30,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438169489] [2023-11-19 08:00:30,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:30,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:31,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:31,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438169489] [2023-11-19 08:00:31,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:00:31,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388756483] [2023-11-19 08:00:31,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:31,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:31,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:31,078 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:31,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:00:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:31,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:00:31,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2023-11-19 08:00:31,595 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:00:31,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388756483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:31,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:31,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:31,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368001374] [2023-11-19 08:00:31,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:31,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:00:31,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:31,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:00:31,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:00:31,646 INFO L87 Difference]: Start difference. First operand has 139 states, 79 states have (on average 1.4303797468354431) internal successors, (113), 80 states have internal predecessors, (113), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) [2023-11-19 08:00:31,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:31,720 INFO L93 Difference]: Finished difference Result 271 states and 505 transitions. [2023-11-19 08:00:31,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:00:31,723 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) Word has length 348 [2023-11-19 08:00:31,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:31,735 INFO L225 Difference]: With dead ends: 271 [2023-11-19 08:00:31,735 INFO L226 Difference]: Without dead ends: 135 [2023-11-19 08:00:31,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 347 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 08:00:31,746 INFO L413 NwaCegarLoop]: 220 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, 220 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 08:00:31,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:31,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-19 08:00:31,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2023-11-19 08:00:31,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 76 states have (on average 1.394736842105263) internal successors, (106), 76 states have internal predecessors, (106), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-19 08:00:31,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 220 transitions. [2023-11-19 08:00:31,823 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 220 transitions. Word has length 348 [2023-11-19 08:00:31,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:31,824 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 220 transitions. [2023-11-19 08:00:31,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) [2023-11-19 08:00:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 220 transitions. [2023-11-19 08:00:31,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-11-19 08:00:31,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:31,836 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:31,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:32,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:32,051 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:32,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:32,052 INFO L85 PathProgramCache]: Analyzing trace with hash -2033145992, now seen corresponding path program 1 times [2023-11-19 08:00:32,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:32,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724862868] [2023-11-19 08:00:32,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:32,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:32,194 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:32,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531396825] [2023-11-19 08:00:32,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:32,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:32,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:32,197 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:32,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:00:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:32,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:00:32,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:32,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-11-19 08:00:32,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:00:32,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:32,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724862868] [2023-11-19 08:00:32,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:00:32,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531396825] [2023-11-19 08:00:32,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531396825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:32,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:32,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:00:32,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336492821] [2023-11-19 08:00:32,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:32,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:32,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:32,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:32,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:32,612 INFO L87 Difference]: Start difference. First operand 135 states and 220 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-11-19 08:00:32,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:32,746 INFO L93 Difference]: Finished difference Result 360 states and 587 transitions. [2023-11-19 08:00:32,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:32,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 348 [2023-11-19 08:00:32,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:32,761 INFO L225 Difference]: With dead ends: 360 [2023-11-19 08:00:32,761 INFO L226 Difference]: Without dead ends: 228 [2023-11-19 08:00:32,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 346 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 08:00:32,767 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 144 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:32,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 521 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:32,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-11-19 08:00:32,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 225. [2023-11-19 08:00:32,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 127 states have (on average 1.3858267716535433) internal successors, (176), 128 states have internal predecessors, (176), 95 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (95), 94 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-19 08:00:32,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 366 transitions. [2023-11-19 08:00:32,851 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 366 transitions. Word has length 348 [2023-11-19 08:00:32,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:32,855 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 366 transitions. [2023-11-19 08:00:32,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-11-19 08:00:32,857 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 366 transitions. [2023-11-19 08:00:32,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-11-19 08:00:32,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:32,869 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:32,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:33,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:33,083 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:33,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:33,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1924610370, now seen corresponding path program 1 times [2023-11-19 08:00:33,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:33,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378527542] [2023-11-19 08:00:33,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:33,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:33,214 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:33,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [770659567] [2023-11-19 08:00:33,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:33,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:33,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:33,223 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:33,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:00:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:33,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 08:00:33,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 1742 proven. 36 refuted. 0 times theorem prover too weak. 4606 trivial. 0 not checked. [2023-11-19 08:00:33,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:34,259 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 294 proven. 39 refuted. 0 times theorem prover too weak. 6051 trivial. 0 not checked. [2023-11-19 08:00:34,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:34,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378527542] [2023-11-19 08:00:34,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:00:34,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770659567] [2023-11-19 08:00:34,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770659567] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:34,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:00:34,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-19 08:00:34,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362412991] [2023-11-19 08:00:34,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:34,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 08:00:34,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:34,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 08:00:34,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-11-19 08:00:34,270 INFO L87 Difference]: Start difference. First operand 225 states and 366 transitions. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 4 states have call successors, (65), 3 states have call predecessors, (65), 7 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2023-11-19 08:00:35,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:35,284 INFO L93 Difference]: Finished difference Result 459 states and 738 transitions. [2023-11-19 08:00:35,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 08:00:35,285 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 4 states have call successors, (65), 3 states have call predecessors, (65), 7 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) Word has length 349 [2023-11-19 08:00:35,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:35,296 INFO L225 Difference]: With dead ends: 459 [2023-11-19 08:00:35,296 INFO L226 Difference]: Without dead ends: 237 [2023-11-19 08:00:35,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 683 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2023-11-19 08:00:35,299 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 543 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:35,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 524 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 08:00:35,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-11-19 08:00:35,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 231. [2023-11-19 08:00:35,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 131 states have (on average 1.3511450381679388) internal successors, (177), 132 states have internal predecessors, (177), 95 states have call successors, (95), 4 states have call predecessors, (95), 4 states have return successors, (95), 94 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-19 08:00:35,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 367 transitions. [2023-11-19 08:00:35,346 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 367 transitions. Word has length 349 [2023-11-19 08:00:35,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:35,348 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 367 transitions. [2023-11-19 08:00:35,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 4 states have call successors, (65), 3 states have call predecessors, (65), 7 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2023-11-19 08:00:35,348 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 367 transitions. [2023-11-19 08:00:35,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-11-19 08:00:35,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:35,355 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:35,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:35,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 08:00:35,577 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:35,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:35,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1766193096, now seen corresponding path program 1 times [2023-11-19 08:00:35,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:35,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535829695] [2023-11-19 08:00:35,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:35,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:35,674 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:35,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171690299] [2023-11-19 08:00:35,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:35,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:35,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:35,677 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:35,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:00:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:35,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:00:35,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:36,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 896 proven. 156 refuted. 0 times theorem prover too weak. 5332 trivial. 0 not checked. [2023-11-19 08:00:36,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:36,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 12 proven. 156 refuted. 0 times theorem prover too weak. 6216 trivial. 0 not checked. [2023-11-19 08:00:36,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:36,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535829695] [2023-11-19 08:00:36,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:00:36,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171690299] [2023-11-19 08:00:36,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171690299] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:36,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:00:36,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-19 08:00:36,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992713101] [2023-11-19 08:00:36,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:36,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:36,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:36,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:36,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:36,989 INFO L87 Difference]: Start difference. First operand 231 states and 367 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2023-11-19 08:00:37,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:37,412 INFO L93 Difference]: Finished difference Result 471 states and 741 transitions. [2023-11-19 08:00:37,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:00:37,414 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) Word has length 349 [2023-11-19 08:00:37,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:37,417 INFO L225 Difference]: With dead ends: 471 [2023-11-19 08:00:37,417 INFO L226 Difference]: Without dead ends: 243 [2023-11-19 08:00:37,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 690 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:00:37,424 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 58 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:37,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 347 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:00:37,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-11-19 08:00:37,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2023-11-19 08:00:37,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 137 states have (on average 1.3211678832116789) internal successors, (181), 138 states have internal predecessors, (181), 95 states have call successors, (95), 6 states have call predecessors, (95), 6 states have return successors, (95), 94 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-19 08:00:37,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 371 transitions. [2023-11-19 08:00:37,508 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 371 transitions. Word has length 349 [2023-11-19 08:00:37,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:37,509 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 371 transitions. [2023-11-19 08:00:37,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2023-11-19 08:00:37,510 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 371 transitions. [2023-11-19 08:00:37,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-11-19 08:00:37,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:37,518 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:37,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:37,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:37,735 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:37,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:37,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1719427574, now seen corresponding path program 1 times [2023-11-19 08:00:37,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:37,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862848242] [2023-11-19 08:00:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:37,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:37,819 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:37,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681725646] [2023-11-19 08:00:37,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:37,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:37,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:37,827 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:37,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:00:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:38,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 08:00:38,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 1268 proven. 150 refuted. 0 times theorem prover too weak. 4966 trivial. 0 not checked. [2023-11-19 08:00:38,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 18 proven. 150 refuted. 0 times theorem prover too weak. 6216 trivial. 0 not checked. [2023-11-19 08:00:39,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:39,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862848242] [2023-11-19 08:00:39,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:00:39,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681725646] [2023-11-19 08:00:39,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681725646] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:39,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:00:39,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-11-19 08:00:39,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371954882] [2023-11-19 08:00:39,345 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:39,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:00:39,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:39,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:00:39,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:00:39,349 INFO L87 Difference]: Start difference. First operand 239 states and 371 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2023-11-19 08:00:40,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:40,040 INFO L93 Difference]: Finished difference Result 601 states and 897 transitions. [2023-11-19 08:00:40,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 08:00:40,042 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) Word has length 349 [2023-11-19 08:00:40,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:40,046 INFO L225 Difference]: With dead ends: 601 [2023-11-19 08:00:40,046 INFO L226 Difference]: Without dead ends: 359 [2023-11-19 08:00:40,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 689 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=352, Unknown=0, NotChecked=0, Total=506 [2023-11-19 08:00:40,049 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 183 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:40,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 528 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:00:40,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-11-19 08:00:40,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 295. [2023-11-19 08:00:40,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 181 states have (on average 1.298342541436464) internal successors, (235), 184 states have internal predecessors, (235), 103 states have call successors, (103), 10 states have call predecessors, (103), 10 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-19 08:00:40,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 441 transitions. [2023-11-19 08:00:40,102 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 441 transitions. Word has length 349 [2023-11-19 08:00:40,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:40,103 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 441 transitions. [2023-11-19 08:00:40,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2023-11-19 08:00:40,104 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 441 transitions. [2023-11-19 08:00:40,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-11-19 08:00:40,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:40,111 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:40,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:40,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:40,334 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:40,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:40,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1018362996, now seen corresponding path program 1 times [2023-11-19 08:00:40,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:40,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768273509] [2023-11-19 08:00:40,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:40,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:40,395 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:40,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1961453315] [2023-11-19 08:00:40,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:40,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:40,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:40,397 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:40,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:00:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:40,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 08:00:40,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:41,693 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 2942 proven. 57 refuted. 0 times theorem prover too weak. 3385 trivial. 0 not checked. [2023-11-19 08:00:41,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:42,612 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 111 proven. 57 refuted. 0 times theorem prover too weak. 6216 trivial. 0 not checked. [2023-11-19 08:00:42,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:42,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768273509] [2023-11-19 08:00:42,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:00:42,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961453315] [2023-11-19 08:00:42,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961453315] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:42,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:00:42,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2023-11-19 08:00:42,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600866061] [2023-11-19 08:00:42,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:42,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 08:00:42,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:42,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 08:00:42,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:00:42,620 INFO L87 Difference]: Start difference. First operand 295 states and 441 transitions. Second operand has 13 states, 13 states have (on average 9.615384615384615) internal successors, (125), 13 states have internal predecessors, (125), 4 states have call successors, (114), 3 states have call predecessors, (114), 5 states have return successors, (114), 4 states have call predecessors, (114), 4 states have call successors, (114) [2023-11-19 08:00:44,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:44,497 INFO L93 Difference]: Finished difference Result 1227 states and 1834 transitions. [2023-11-19 08:00:44,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 08:00:44,498 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.615384615384615) internal successors, (125), 13 states have internal predecessors, (125), 4 states have call successors, (114), 3 states have call predecessors, (114), 5 states have return successors, (114), 4 states have call predecessors, (114), 4 states have call successors, (114) Word has length 349 [2023-11-19 08:00:44,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:44,508 INFO L225 Difference]: With dead ends: 1227 [2023-11-19 08:00:44,508 INFO L226 Difference]: Without dead ends: 935 [2023-11-19 08:00:44,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 685 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=242, Unknown=0, NotChecked=0, Total=380 [2023-11-19 08:00:44,511 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 909 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:44,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 907 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-19 08:00:44,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2023-11-19 08:00:44,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 698. [2023-11-19 08:00:44,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 428 states have (on average 1.2897196261682242) internal successors, (552), 436 states have internal predecessors, (552), 244 states have call successors, (244), 25 states have call predecessors, (244), 25 states have return successors, (244), 236 states have call predecessors, (244), 244 states have call successors, (244) [2023-11-19 08:00:44,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1040 transitions. [2023-11-19 08:00:44,728 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1040 transitions. Word has length 349 [2023-11-19 08:00:44,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:44,730 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 1040 transitions. [2023-11-19 08:00:44,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.615384615384615) internal successors, (125), 13 states have internal predecessors, (125), 4 states have call successors, (114), 3 states have call predecessors, (114), 5 states have return successors, (114), 4 states have call predecessors, (114), 4 states have call successors, (114) [2023-11-19 08:00:44,731 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1040 transitions. [2023-11-19 08:00:44,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-11-19 08:00:44,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:44,740 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:44,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:44,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:44,951 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:44,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:44,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1587660558, now seen corresponding path program 1 times [2023-11-19 08:00:44,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:44,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627166510] [2023-11-19 08:00:44,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:44,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:45,022 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:45,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1230338361] [2023-11-19 08:00:45,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:45,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:45,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:45,025 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:45,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb4a2ef8-4c15-4937-91ed-723d90955956/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:00:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:45,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 69 conjunts are in the unsatisfiable core [2023-11-19 08:00:45,463 INFO L285 TraceCheckSpWp]: Computing forward predicates...