./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-21.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl --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 4e26c4f9f4bd36e827f5cc020962f05d0934fda94760f725a49c7754f36caf1f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:12:12,480 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:12:12,586 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:12:12,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:12:12,594 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:12:12,638 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:12:12,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:12:12,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:12:12,641 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:12:12,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:12:12,648 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:12:12,648 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:12:12,649 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:12:12,651 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:12:12,651 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:12:12,652 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:12:12,652 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:12:12,653 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:12:12,653 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:12:12,654 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:12:12,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:12:12,655 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:12:12,655 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:12:12,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:12:12,657 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:12:12,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:12:12,658 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:12:12,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:12:12,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:12:12,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:12:12,661 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:12:12,661 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:12:12,661 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:12:12,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:12:12,662 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:12:12,662 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:12:12,663 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:12:12,663 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:12:12,663 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:12:12,663 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_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e26c4f9f4bd36e827f5cc020962f05d0934fda94760f725a49c7754f36caf1f [2023-11-12 02:12:13,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:12:13,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:12:13,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:12:13,049 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:12:13,050 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:12:13,051 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-21.i [2023-11-12 02:12:16,196 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:12:16,516 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:12:16,517 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-21.i [2023-11-12 02:12:16,534 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/data/c18e6840c/a5c0089cf3ba49b0970d20c93bd31c6b/FLAGb1cfcb389 [2023-11-12 02:12:16,556 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/data/c18e6840c/a5c0089cf3ba49b0970d20c93bd31c6b [2023-11-12 02:12:16,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:12:16,565 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:12:16,566 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:16,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:12:16,577 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:12:16,578 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:16" (1/1) ... [2023-11-12 02:12:16,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15440bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:16, skipping insertion in model container [2023-11-12 02:12:16,580 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:16" (1/1) ... [2023-11-12 02:12:16,655 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:12:16,834 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_2e400baa-2120-45dc-b1e1-13982bd58bec/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-21.i[916,929] [2023-11-12 02:12:17,126 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:17,147 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:12:17,160 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_2e400baa-2120-45dc-b1e1-13982bd58bec/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-21.i[916,929] [2023-11-12 02:12:17,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:17,341 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:12:17,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:17 WrapperNode [2023-11-12 02:12:17,342 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:17,354 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:17,354 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:12:17,354 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:12:17,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:17" (1/1) ... [2023-11-12 02:12:17,402 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:17" (1/1) ... [2023-11-12 02:12:17,524 INFO L138 Inliner]: procedures = 26, calls = 117, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 862 [2023-11-12 02:12:17,525 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:17,526 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:12:17,526 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:12:17,526 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:12:17,536 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:17" (1/1) ... [2023-11-12 02:12:17,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:17" (1/1) ... [2023-11-12 02:12:17,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:17" (1/1) ... [2023-11-12 02:12:17,553 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:17" (1/1) ... [2023-11-12 02:12:17,594 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:17" (1/1) ... [2023-11-12 02:12:17,603 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:17" (1/1) ... [2023-11-12 02:12:17,611 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:17" (1/1) ... [2023-11-12 02:12:17,634 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:17" (1/1) ... [2023-11-12 02:12:17,646 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:12:17,647 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:12:17,647 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:12:17,648 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:12:17,649 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:17" (1/1) ... [2023-11-12 02:12:17,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:12:17,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:17,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:12:17,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:12:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:12:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:12:17,726 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:12:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:12:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:12:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:12:17,936 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:12:17,938 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:12:19,376 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:12:19,398 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:12:19,398 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:12:19,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:19 BoogieIcfgContainer [2023-11-12 02:12:19,402 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:12:19,406 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:12:19,406 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:12:19,410 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:12:19,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:12:16" (1/3) ... [2023-11-12 02:12:19,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b864dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:19, skipping insertion in model container [2023-11-12 02:12:19,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:17" (2/3) ... [2023-11-12 02:12:19,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b864dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:19, skipping insertion in model container [2023-11-12 02:12:19,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:19" (3/3) ... [2023-11-12 02:12:19,414 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-21.i [2023-11-12 02:12:19,433 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:12:19,434 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:12:19,526 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:12:19,534 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;@3e26a035, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:12:19,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:12:19,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 331 states, 224 states have (on average 1.6428571428571428) internal successors, (368), 225 states have internal predecessors, (368), 104 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2023-11-12 02:12:19,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-11-12 02:12:19,580 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:19,582 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:19,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:19,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:19,588 INFO L85 PathProgramCache]: Analyzing trace with hash -917832920, now seen corresponding path program 1 times [2023-11-12 02:12:19,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:19,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566912905] [2023-11-12 02:12:19,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:19,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:20,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:20,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566912905] [2023-11-12 02:12:20,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:12:20,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811526727] [2023-11-12 02:12:20,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:20,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:20,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:20,169 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:20,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:12:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:20,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:12:20,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:20,874 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 21218 trivial. 0 not checked. [2023-11-12 02:12:20,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:20,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811526727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:20,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:20,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:12:20,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557744624] [2023-11-12 02:12:20,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:20,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:12:20,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:20,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:12:20,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:12:20,969 INFO L87 Difference]: Start difference. First operand has 331 states, 224 states have (on average 1.6428571428571428) internal successors, (368), 225 states have internal predecessors, (368), 104 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 2 states, 2 states have (on average 77.0) internal successors, (154), 2 states have internal predecessors, (154), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 2 states have call successors, (104) [2023-11-12 02:12:21,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:21,081 INFO L93 Difference]: Finished difference Result 655 states and 1250 transitions. [2023-11-12 02:12:21,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:12:21,089 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 77.0) internal successors, (154), 2 states have internal predecessors, (154), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 2 states have call successors, (104) Word has length 669 [2023-11-12 02:12:21,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:21,111 INFO L225 Difference]: With dead ends: 655 [2023-11-12 02:12:21,111 INFO L226 Difference]: Without dead ends: 327 [2023-11-12 02:12:21,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:12:21,127 INFO L413 NwaCegarLoop]: 569 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, 569 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 [2023-11-12 02:12:21,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:21,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-11-12 02:12:21,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2023-11-12 02:12:21,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 221 states have (on average 1.6334841628959276) internal successors, (361), 221 states have internal predecessors, (361), 104 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2023-11-12 02:12:21,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 569 transitions. [2023-11-12 02:12:21,272 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 569 transitions. Word has length 669 [2023-11-12 02:12:21,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:21,274 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 569 transitions. [2023-11-12 02:12:21,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 77.0) internal successors, (154), 2 states have internal predecessors, (154), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 2 states have call successors, (104) [2023-11-12 02:12:21,276 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 569 transitions. [2023-11-12 02:12:21,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-11-12 02:12:21,306 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:21,307 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:21,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:21,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:21,527 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:21,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:21,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1183655948, now seen corresponding path program 1 times [2023-11-12 02:12:21,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:21,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453876218] [2023-11-12 02:12:21,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:21,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:21,781 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:12:21,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126355720] [2023-11-12 02:12:21,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:21,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:21,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:21,785 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:21,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:12:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:22,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:12:22,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:23,350 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-12 02:12:23,350 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:23,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:23,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453876218] [2023-11-12 02:12:23,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:12:23,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126355720] [2023-11-12 02:12:23,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126355720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:23,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:23,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:23,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155162359] [2023-11-12 02:12:23,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:23,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:23,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:23,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:23,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:23,358 INFO L87 Difference]: Start difference. First operand 327 states and 569 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:23,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:23,774 INFO L93 Difference]: Finished difference Result 1173 states and 2053 transitions. [2023-11-12 02:12:23,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:23,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 669 [2023-11-12 02:12:23,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:23,790 INFO L225 Difference]: With dead ends: 1173 [2023-11-12 02:12:23,790 INFO L226 Difference]: Without dead ends: 849 [2023-11-12 02:12:23,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:12:23,794 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 819 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:23,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1955 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:12:23,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2023-11-12 02:12:23,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 844. [2023-11-12 02:12:23,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 596 states have (on average 1.6661073825503356) internal successors, (993), 597 states have internal predecessors, (993), 244 states have call successors, (244), 3 states have call predecessors, (244), 3 states have return successors, (244), 243 states have call predecessors, (244), 244 states have call successors, (244) [2023-11-12 02:12:23,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1481 transitions. [2023-11-12 02:12:23,968 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1481 transitions. Word has length 669 [2023-11-12 02:12:23,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:23,974 INFO L495 AbstractCegarLoop]: Abstraction has 844 states and 1481 transitions. [2023-11-12 02:12:23,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:23,976 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1481 transitions. [2023-11-12 02:12:24,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-11-12 02:12:24,002 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:24,003 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:24,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-12 02:12:24,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:24,212 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:24,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:24,213 INFO L85 PathProgramCache]: Analyzing trace with hash -943416202, now seen corresponding path program 1 times [2023-11-12 02:12:24,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:24,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59039735] [2023-11-12 02:12:24,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:24,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:24,352 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:12:24,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926235005] [2023-11-12 02:12:24,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:24,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:24,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:24,354 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:24,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:12:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:24,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:12:24,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:25,005 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-12 02:12:25,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:25,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:25,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59039735] [2023-11-12 02:12:25,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:12:25,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926235005] [2023-11-12 02:12:25,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926235005] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:25,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:25,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:12:25,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090497438] [2023-11-12 02:12:25,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:25,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:12:25,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:25,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:12:25,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:12:25,012 INFO L87 Difference]: Start difference. First operand 844 states and 1481 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:25,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:25,713 INFO L93 Difference]: Finished difference Result 2804 states and 4952 transitions. [2023-11-12 02:12:25,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:12:25,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 669 [2023-11-12 02:12:25,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:25,732 INFO L225 Difference]: With dead ends: 2804 [2023-11-12 02:12:25,732 INFO L226 Difference]: Without dead ends: 1963 [2023-11-12 02:12:25,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:12:25,738 INFO L413 NwaCegarLoop]: 915 mSDtfsCounter, 621 mSDsluCounter, 2409 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 3324 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:25,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 3324 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 02:12:25,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2023-11-12 02:12:25,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1953. [2023-11-12 02:12:25,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1504 states have (on average 1.7147606382978724) internal successors, (2579), 1511 states have internal predecessors, (2579), 439 states have call successors, (439), 9 states have call predecessors, (439), 9 states have return successors, (439), 432 states have call predecessors, (439), 439 states have call successors, (439) [2023-11-12 02:12:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 3457 transitions. [2023-11-12 02:12:26,008 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 3457 transitions. Word has length 669 [2023-11-12 02:12:26,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:26,010 INFO L495 AbstractCegarLoop]: Abstraction has 1953 states and 3457 transitions. [2023-11-12 02:12:26,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:26,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 3457 transitions. [2023-11-12 02:12:26,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-11-12 02:12:26,020 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:26,021 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:26,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:26,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:26,230 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:26,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:26,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1440508536, now seen corresponding path program 1 times [2023-11-12 02:12:26,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:26,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650673551] [2023-11-12 02:12:26,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:26,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:26,343 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:12:26,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [16733691] [2023-11-12 02:12:26,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:26,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:26,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:26,346 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:26,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:12:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:26,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:12:26,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:26,995 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-12 02:12:26,996 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:26,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:26,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650673551] [2023-11-12 02:12:26,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:12:26,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16733691] [2023-11-12 02:12:26,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16733691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:26,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:27,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:27,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984975014] [2023-11-12 02:12:27,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:27,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:27,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:27,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:27,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:27,005 INFO L87 Difference]: Start difference. First operand 1953 states and 3457 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:27,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:27,200 INFO L93 Difference]: Finished difference Result 4954 states and 8778 transitions. [2023-11-12 02:12:27,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:27,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 669 [2023-11-12 02:12:27,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:27,225 INFO L225 Difference]: With dead ends: 4954 [2023-11-12 02:12:27,225 INFO L226 Difference]: Without dead ends: 3004 [2023-11-12 02:12:27,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:27,239 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 309 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:27,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1338 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:27,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states. [2023-11-12 02:12:27,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 2533. [2023-11-12 02:12:27,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2533 states, 1988 states have (on average 1.7243460764587526) internal successors, (3428), 1998 states have internal predecessors, (3428), 532 states have call successors, (532), 12 states have call predecessors, (532), 12 states have return successors, (532), 522 states have call predecessors, (532), 532 states have call successors, (532) [2023-11-12 02:12:27,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2533 states to 2533 states and 4492 transitions. [2023-11-12 02:12:27,558 INFO L78 Accepts]: Start accepts. Automaton has 2533 states and 4492 transitions. Word has length 669 [2023-11-12 02:12:27,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:27,561 INFO L495 AbstractCegarLoop]: Abstraction has 2533 states and 4492 transitions. [2023-11-12 02:12:27,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:27,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2533 states and 4492 transitions. [2023-11-12 02:12:27,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-11-12 02:12:27,572 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:27,573 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:27,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:27,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:27,783 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:27,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:27,783 INFO L85 PathProgramCache]: Analyzing trace with hash 623341748, now seen corresponding path program 1 times [2023-11-12 02:12:27,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:27,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005308657] [2023-11-12 02:12:27,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:27,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:27,888 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:12:27,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [716519628] [2023-11-12 02:12:27,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:27,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:27,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:27,890 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:27,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:12:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:28,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:12:28,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:29,595 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-12 02:12:29,595 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:29,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:29,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005308657] [2023-11-12 02:12:29,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:12:29,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716519628] [2023-11-12 02:12:29,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716519628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:29,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:29,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:29,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159006061] [2023-11-12 02:12:29,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:29,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:29,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:29,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:29,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:29,600 INFO L87 Difference]: Start difference. First operand 2533 states and 4492 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:29,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:29,895 INFO L93 Difference]: Finished difference Result 7605 states and 13494 transitions. [2023-11-12 02:12:29,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:29,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 669 [2023-11-12 02:12:29,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:29,934 INFO L225 Difference]: With dead ends: 7605 [2023-11-12 02:12:29,935 INFO L226 Difference]: Without dead ends: 5075 [2023-11-12 02:12:29,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:12:29,944 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 244 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:29,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1679 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:29,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5075 states. [2023-11-12 02:12:30,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5075 to 5025. [2023-11-12 02:12:30,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5025 states, 3936 states have (on average 1.7164634146341464) internal successors, (6756), 3956 states have internal predecessors, (6756), 1064 states have call successors, (1064), 24 states have call predecessors, (1064), 24 states have return successors, (1064), 1044 states have call predecessors, (1064), 1064 states have call successors, (1064) [2023-11-12 02:12:30,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5025 states to 5025 states and 8884 transitions. [2023-11-12 02:12:30,515 INFO L78 Accepts]: Start accepts. Automaton has 5025 states and 8884 transitions. Word has length 669 [2023-11-12 02:12:30,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:30,517 INFO L495 AbstractCegarLoop]: Abstraction has 5025 states and 8884 transitions. [2023-11-12 02:12:30,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:30,518 INFO L276 IsEmpty]: Start isEmpty. Operand 5025 states and 8884 transitions. [2023-11-12 02:12:30,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-11-12 02:12:30,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:30,530 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:30,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:30,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:30,739 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:30,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:30,740 INFO L85 PathProgramCache]: Analyzing trace with hash -437317196, now seen corresponding path program 1 times [2023-11-12 02:12:30,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:30,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616562173] [2023-11-12 02:12:30,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:30,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:30,830 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:12:30,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731432215] [2023-11-12 02:12:30,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:30,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:30,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:30,832 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:30,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:12:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:31,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:12:31,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:31,373 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-12 02:12:31,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:31,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:31,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616562173] [2023-11-12 02:12:31,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:12:31,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731432215] [2023-11-12 02:12:31,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731432215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:31,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:31,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:31,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492255759] [2023-11-12 02:12:31,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:31,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:31,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:31,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:31,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:31,378 INFO L87 Difference]: Start difference. First operand 5025 states and 8884 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:31,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:31,840 INFO L93 Difference]: Finished difference Result 12877 states and 22404 transitions. [2023-11-12 02:12:31,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:31,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 669 [2023-11-12 02:12:31,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:31,957 INFO L225 Difference]: With dead ends: 12877 [2023-11-12 02:12:31,957 INFO L226 Difference]: Without dead ends: 7855 [2023-11-12 02:12:31,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:31,975 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 391 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:31,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 1159 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:31,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7855 states. [2023-11-12 02:12:32,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7855 to 5049. [2023-11-12 02:12:32,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5049 states, 3960 states have (on average 1.7121212121212122) internal successors, (6780), 3980 states have internal predecessors, (6780), 1064 states have call successors, (1064), 24 states have call predecessors, (1064), 24 states have return successors, (1064), 1044 states have call predecessors, (1064), 1064 states have call successors, (1064) [2023-11-12 02:12:32,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5049 states to 5049 states and 8908 transitions. [2023-11-12 02:12:32,962 INFO L78 Accepts]: Start accepts. Automaton has 5049 states and 8908 transitions. Word has length 669 [2023-11-12 02:12:32,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:32,964 INFO L495 AbstractCegarLoop]: Abstraction has 5049 states and 8908 transitions. [2023-11-12 02:12:32,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:32,965 INFO L276 IsEmpty]: Start isEmpty. Operand 5049 states and 8908 transitions. [2023-11-12 02:12:32,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-11-12 02:12:32,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:32,980 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:32,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:33,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:33,189 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:33,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:33,189 INFO L85 PathProgramCache]: Analyzing trace with hash -2126260938, now seen corresponding path program 1 times [2023-11-12 02:12:33,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:33,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884141401] [2023-11-12 02:12:33,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:33,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:33,296 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:12:33,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [258578774] [2023-11-12 02:12:33,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:33,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:33,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:33,298 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:33,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:12:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:33,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:12:33,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:33,873 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-12 02:12:33,873 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:33,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:33,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884141401] [2023-11-12 02:12:33,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:12:33,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258578774] [2023-11-12 02:12:33,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258578774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:33,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:33,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:33,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197261853] [2023-11-12 02:12:33,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:33,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:33,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:33,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:33,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:33,878 INFO L87 Difference]: Start difference. First operand 5049 states and 8908 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:34,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:34,482 INFO L93 Difference]: Finished difference Result 15081 states and 26598 transitions. [2023-11-12 02:12:34,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:34,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 669 [2023-11-12 02:12:34,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:34,552 INFO L225 Difference]: With dead ends: 15081 [2023-11-12 02:12:34,552 INFO L226 Difference]: Without dead ends: 10035 [2023-11-12 02:12:34,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:34,642 INFO L413 NwaCegarLoop]: 1099 mSDtfsCounter, 555 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:34,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 1653 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:34,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10035 states. [2023-11-12 02:12:35,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10035 to 10033. [2023-11-12 02:12:35,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10033 states, 7856 states have (on average 1.7018839103869654) internal successors, (13370), 7896 states have internal predecessors, (13370), 2128 states have call successors, (2128), 48 states have call predecessors, (2128), 48 states have return successors, (2128), 2088 states have call predecessors, (2128), 2128 states have call successors, (2128) [2023-11-12 02:12:35,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10033 states to 10033 states and 17626 transitions. [2023-11-12 02:12:35,957 INFO L78 Accepts]: Start accepts. Automaton has 10033 states and 17626 transitions. Word has length 669 [2023-11-12 02:12:35,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:35,959 INFO L495 AbstractCegarLoop]: Abstraction has 10033 states and 17626 transitions. [2023-11-12 02:12:35,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:35,960 INFO L276 IsEmpty]: Start isEmpty. Operand 10033 states and 17626 transitions. [2023-11-12 02:12:35,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-11-12 02:12:35,983 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:35,984 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:36,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:36,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:36,193 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:36,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:36,193 INFO L85 PathProgramCache]: Analyzing trace with hash 91369460, now seen corresponding path program 1 times [2023-11-12 02:12:36,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:36,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718201157] [2023-11-12 02:12:36,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:36,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:36,301 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:12:36,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269124426] [2023-11-12 02:12:36,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:36,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:36,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:36,303 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:36,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:12:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:36,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 1608 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:12:36,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-12 02:12:37,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:37,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:37,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718201157] [2023-11-12 02:12:37,013 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:12:37,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269124426] [2023-11-12 02:12:37,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269124426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:37,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:37,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:37,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173015523] [2023-11-12 02:12:37,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:37,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:37,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:37,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:37,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:37,017 INFO L87 Difference]: Start difference. First operand 10033 states and 17626 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:37,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:37,370 INFO L93 Difference]: Finished difference Result 15019 states and 26411 transitions. [2023-11-12 02:12:37,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:37,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 669 [2023-11-12 02:12:37,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:37,390 INFO L225 Difference]: With dead ends: 15019 [2023-11-12 02:12:37,390 INFO L226 Difference]: Without dead ends: 4989 [2023-11-12 02:12:37,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:12:37,420 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 557 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:37,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 1099 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:37,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4989 states. [2023-11-12 02:12:38,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4989 to 4989. [2023-11-12 02:12:38,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4989 states, 3900 states have (on average 1.6830769230769231) internal successors, (6564), 3920 states have internal predecessors, (6564), 1064 states have call successors, (1064), 24 states have call predecessors, (1064), 24 states have return successors, (1064), 1044 states have call predecessors, (1064), 1064 states have call successors, (1064) [2023-11-12 02:12:38,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4989 states to 4989 states and 8692 transitions. [2023-11-12 02:12:38,047 INFO L78 Accepts]: Start accepts. Automaton has 4989 states and 8692 transitions. Word has length 669 [2023-11-12 02:12:38,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:38,048 INFO L495 AbstractCegarLoop]: Abstraction has 4989 states and 8692 transitions. [2023-11-12 02:12:38,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:38,049 INFO L276 IsEmpty]: Start isEmpty. Operand 4989 states and 8692 transitions. [2023-11-12 02:12:38,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2023-11-12 02:12:38,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:38,061 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:38,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:38,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:38,270 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:38,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:38,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1641150313, now seen corresponding path program 1 times [2023-11-12 02:12:38,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:38,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920422152] [2023-11-12 02:12:38,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:38,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:38,359 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:12:38,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253722196] [2023-11-12 02:12:38,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:38,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:38,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:38,361 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:38,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 02:12:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:38,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:12:38,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-12 02:12:38,965 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:38,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:38,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920422152] [2023-11-12 02:12:38,965 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:12:38,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253722196] [2023-11-12 02:12:38,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253722196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:38,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:38,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:38,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973351419] [2023-11-12 02:12:38,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:38,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:38,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:38,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:38,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:38,969 INFO L87 Difference]: Start difference. First operand 4989 states and 8692 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:39,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:39,604 INFO L93 Difference]: Finished difference Result 14961 states and 26070 transitions. [2023-11-12 02:12:39,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:39,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 671 [2023-11-12 02:12:39,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:39,643 INFO L225 Difference]: With dead ends: 14961 [2023-11-12 02:12:39,643 INFO L226 Difference]: Without dead ends: 9975 [2023-11-12 02:12:39,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 669 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:39,668 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 542 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:39,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 1148 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:39,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9975 states. [2023-11-12 02:12:40,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9975 to 9973. [2023-11-12 02:12:40,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9973 states, 7796 states have (on average 1.6772703950743972) internal successors, (13076), 7836 states have internal predecessors, (13076), 2128 states have call successors, (2128), 48 states have call predecessors, (2128), 48 states have return successors, (2128), 2088 states have call predecessors, (2128), 2128 states have call successors, (2128) [2023-11-12 02:12:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9973 states to 9973 states and 17332 transitions. [2023-11-12 02:12:40,893 INFO L78 Accepts]: Start accepts. Automaton has 9973 states and 17332 transitions. Word has length 671 [2023-11-12 02:12:40,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:40,895 INFO L495 AbstractCegarLoop]: Abstraction has 9973 states and 17332 transitions. [2023-11-12 02:12:40,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:40,895 INFO L276 IsEmpty]: Start isEmpty. Operand 9973 states and 17332 transitions. [2023-11-12 02:12:40,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2023-11-12 02:12:40,919 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:40,919 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:40,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:41,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:41,128 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:41,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:41,129 INFO L85 PathProgramCache]: Analyzing trace with hash -408237529, now seen corresponding path program 1 times [2023-11-12 02:12:41,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:41,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929612666] [2023-11-12 02:12:41,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:41,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:41,236 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:12:41,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1252807619] [2023-11-12 02:12:41,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:41,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:41,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:41,238 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:41,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-12 02:12:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:41,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:12:41,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-12 02:12:41,917 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:41,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:41,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929612666] [2023-11-12 02:12:41,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:12:41,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252807619] [2023-11-12 02:12:41,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252807619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:41,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:41,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:41,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431587532] [2023-11-12 02:12:41,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:41,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:41,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:41,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:41,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:41,923 INFO L87 Difference]: Start difference. First operand 9973 states and 17332 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:42,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:42,901 INFO L93 Difference]: Finished difference Result 25561 states and 44514 transitions. [2023-11-12 02:12:42,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:42,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 671 [2023-11-12 02:12:42,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:42,958 INFO L225 Difference]: With dead ends: 25561 [2023-11-12 02:12:42,958 INFO L226 Difference]: Without dead ends: 15591 [2023-11-12 02:12:42,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 669 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:42,986 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 525 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:42,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 1164 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:43,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15591 states. [2023-11-12 02:12:44,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15591 to 15589. [2023-11-12 02:12:44,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15589 states, 12324 states have (on average 1.6760791950665368) internal successors, (20656), 12384 states have internal predecessors, (20656), 3192 states have call successors, (3192), 72 states have call predecessors, (3192), 72 states have return successors, (3192), 3132 states have call predecessors, (3192), 3192 states have call successors, (3192) [2023-11-12 02:12:44,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15589 states to 15589 states and 27040 transitions. [2023-11-12 02:12:44,876 INFO L78 Accepts]: Start accepts. Automaton has 15589 states and 27040 transitions. Word has length 671 [2023-11-12 02:12:44,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:44,877 INFO L495 AbstractCegarLoop]: Abstraction has 15589 states and 27040 transitions. [2023-11-12 02:12:44,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:44,878 INFO L276 IsEmpty]: Start isEmpty. Operand 15589 states and 27040 transitions. [2023-11-12 02:12:44,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2023-11-12 02:12:44,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:44,901 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:44,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:45,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-12 02:12:45,110 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:45,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:45,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1735359069, now seen corresponding path program 1 times [2023-11-12 02:12:45,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:45,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890558253] [2023-11-12 02:12:45,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:45,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:45,198 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:12:45,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610659264] [2023-11-12 02:12:45,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:45,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:45,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:45,200 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:45,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-12 02:12:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:45,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:12:45,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:45,849 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-12 02:12:45,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:45,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:45,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890558253] [2023-11-12 02:12:45,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:12:45,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610659264] [2023-11-12 02:12:45,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610659264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:45,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:45,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:45,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722112780] [2023-11-12 02:12:45,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:45,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:45,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:45,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:45,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:45,854 INFO L87 Difference]: Start difference. First operand 15589 states and 27040 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:46,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:46,838 INFO L93 Difference]: Finished difference Result 31175 states and 54077 transitions. [2023-11-12 02:12:46,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:46,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 671 [2023-11-12 02:12:46,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:46,894 INFO L225 Difference]: With dead ends: 31175 [2023-11-12 02:12:46,895 INFO L226 Difference]: Without dead ends: 15589 [2023-11-12 02:12:46,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 669 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:46,926 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 538 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:46,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 555 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:46,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15589 states. [2023-11-12 02:12:49,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15589 to 15589. [2023-11-12 02:12:49,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15589 states, 12324 states have (on average 1.664394677052905) internal successors, (20512), 12384 states have internal predecessors, (20512), 3192 states have call successors, (3192), 72 states have call predecessors, (3192), 72 states have return successors, (3192), 3132 states have call predecessors, (3192), 3192 states have call successors, (3192) [2023-11-12 02:12:49,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15589 states to 15589 states and 26896 transitions. [2023-11-12 02:12:49,155 INFO L78 Accepts]: Start accepts. Automaton has 15589 states and 26896 transitions. Word has length 671 [2023-11-12 02:12:49,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:49,156 INFO L495 AbstractCegarLoop]: Abstraction has 15589 states and 26896 transitions. [2023-11-12 02:12:49,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:49,157 INFO L276 IsEmpty]: Start isEmpty. Operand 15589 states and 26896 transitions. [2023-11-12 02:12:49,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2023-11-12 02:12:49,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:49,187 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:49,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-12 02:12:49,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 02:12:49,397 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:49,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:49,398 INFO L85 PathProgramCache]: Analyzing trace with hash 754169893, now seen corresponding path program 1 times [2023-11-12 02:12:49,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:49,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785316065] [2023-11-12 02:12:49,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:49,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:49,502 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:12:49,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701196672] [2023-11-12 02:12:49,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:49,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:49,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:49,505 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:49,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-12 02:12:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:50,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:12:50,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:50,257 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-12 02:12:50,257 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:50,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:50,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785316065] [2023-11-12 02:12:50,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:12:50,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701196672] [2023-11-12 02:12:50,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701196672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:50,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:50,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:50,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580419993] [2023-11-12 02:12:50,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:50,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:50,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:50,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:50,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:50,263 INFO L87 Difference]: Start difference. First operand 15589 states and 26896 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:51,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:51,974 INFO L93 Difference]: Finished difference Result 38971 states and 66504 transitions. [2023-11-12 02:12:51,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:51,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 671 [2023-11-12 02:12:51,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:52,082 INFO L225 Difference]: With dead ends: 38971 [2023-11-12 02:12:52,082 INFO L226 Difference]: Without dead ends: 23385 [2023-11-12 02:12:52,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 669 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:52,115 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 187 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:52,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 1105 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:52,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23385 states. [2023-11-12 02:12:54,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23385 to 23371. [2023-11-12 02:12:54,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23371 states, 17586 states have (on average 1.606163994086205) internal successors, (28246), 17718 states have internal predecessors, (28246), 5640 states have call successors, (5640), 144 states have call predecessors, (5640), 144 states have return successors, (5640), 5508 states have call predecessors, (5640), 5640 states have call successors, (5640) [2023-11-12 02:12:54,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23371 states to 23371 states and 39526 transitions. [2023-11-12 02:12:54,615 INFO L78 Accepts]: Start accepts. Automaton has 23371 states and 39526 transitions. Word has length 671 [2023-11-12 02:12:54,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:54,617 INFO L495 AbstractCegarLoop]: Abstraction has 23371 states and 39526 transitions. [2023-11-12 02:12:54,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-12 02:12:54,618 INFO L276 IsEmpty]: Start isEmpty. Operand 23371 states and 39526 transitions. [2023-11-12 02:12:54,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2023-11-12 02:12:54,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:54,654 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:54,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:54,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-12 02:12:54,865 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:54,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:54,866 INFO L85 PathProgramCache]: Analyzing trace with hash 692130279, now seen corresponding path program 1 times [2023-11-12 02:12:54,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:54,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525837066] [2023-11-12 02:12:54,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:54,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:54,969 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:12:54,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1717758589] [2023-11-12 02:12:54,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:54,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:54,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:54,971 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:55,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e400baa-2120-45dc-b1e1-13982bd58bec/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-12 02:12:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:55,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:12:55,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:58,348 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-12 02:12:58,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:58,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:58,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525837066] [2023-11-12 02:12:58,349 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:12:58,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717758589] [2023-11-12 02:12:58,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717758589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:58,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:58,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:12:58,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766874716] [2023-11-12 02:12:58,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:58,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:58,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:58,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:58,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:58,355 INFO L87 Difference]: Start difference. First operand 23371 states and 39526 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104)