./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-64.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_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/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_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/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_6d5a2c19-b734-49ea-981c-d86f810be507/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 0afd03d96250b15a3092af5b8545562faa42b0b4fabe531d4bd1ca219b78fa15 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:22:43,860 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:22:43,947 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:22:43,952 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:22:43,953 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:22:43,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:22:43,981 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:22:43,982 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:22:43,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:22:43,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:22:43,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:22:43,985 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:22:43,985 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:22:43,986 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:22:43,987 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:22:43,987 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:22:43,988 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:22:43,988 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:22:43,988 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:22:43,989 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:22:43,989 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:22:43,991 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:22:43,991 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:22:43,992 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:22:43,992 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:22:43,993 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:22:43,993 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:22:43,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:22:43,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:22:43,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:22:43,996 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:22:43,997 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:22:43,997 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:22:43,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:22:43,998 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:22:43,998 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:22:43,998 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:22:43,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:22:43,999 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:22:43,999 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_6d5a2c19-b734-49ea-981c-d86f810be507/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0afd03d96250b15a3092af5b8545562faa42b0b4fabe531d4bd1ca219b78fa15 [2023-11-12 02:22:44,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:22:44,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:22:44,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:22:44,315 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:22:44,315 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:22:44,316 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-64.i [2023-11-12 02:22:47,463 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:22:47,679 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:22:47,680 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-64.i [2023-11-12 02:22:47,691 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/data/4c0edf4dc/8ce0ce6405a448609adb2edf12a3a81f/FLAGc331b1519 [2023-11-12 02:22:47,715 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/data/4c0edf4dc/8ce0ce6405a448609adb2edf12a3a81f [2023-11-12 02:22:47,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:22:47,725 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:22:47,727 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:22:47,727 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:22:47,733 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:22:47,733 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:22:47" (1/1) ... [2023-11-12 02:22:47,734 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56027394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:47, skipping insertion in model container [2023-11-12 02:22:47,735 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:22:47" (1/1) ... [2023-11-12 02:22:47,785 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:22:47,941 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_6d5a2c19-b734-49ea-981c-d86f810be507/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-64.i[919,932] [2023-11-12 02:22:48,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:48,089 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:22:48,106 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_6d5a2c19-b734-49ea-981c-d86f810be507/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-64.i[919,932] [2023-11-12 02:22:48,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:48,196 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:22:48,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:48 WrapperNode [2023-11-12 02:22:48,196 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:22:48,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:22:48,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:22:48,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:22:48,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:48" (1/1) ... [2023-11-12 02:22:48,234 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:48" (1/1) ... [2023-11-12 02:22:48,286 INFO L138 Inliner]: procedures = 26, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 209 [2023-11-12 02:22:48,286 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:22:48,287 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:22:48,287 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:22:48,288 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:22:48,297 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:48" (1/1) ... [2023-11-12 02:22:48,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:48" (1/1) ... [2023-11-12 02:22:48,303 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:48" (1/1) ... [2023-11-12 02:22:48,303 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:48" (1/1) ... [2023-11-12 02:22:48,313 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:48" (1/1) ... [2023-11-12 02:22:48,333 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:48" (1/1) ... [2023-11-12 02:22:48,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:48" (1/1) ... [2023-11-12 02:22:48,337 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:48" (1/1) ... [2023-11-12 02:22:48,341 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:22:48,342 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:22:48,342 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:22:48,342 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:22:48,343 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:48" (1/1) ... [2023-11-12 02:22:48,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:22:48,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:48,379 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:22:48,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:22:48,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:22:48,422 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:22:48,422 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:22:48,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:22:48,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:22:48,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:22:48,511 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:22:48,513 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:22:48,985 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:22:49,000 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:22:49,000 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:22:49,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:22:49 BoogieIcfgContainer [2023-11-12 02:22:49,003 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:22:49,018 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:22:49,018 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:22:49,022 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:22:49,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:22:47" (1/3) ... [2023-11-12 02:22:49,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d90ae91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:22:49, skipping insertion in model container [2023-11-12 02:22:49,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:48" (2/3) ... [2023-11-12 02:22:49,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d90ae91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:22:49, skipping insertion in model container [2023-11-12 02:22:49,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:22:49" (3/3) ... [2023-11-12 02:22:49,026 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-64.i [2023-11-12 02:22:49,046 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:22:49,047 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:22:49,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:22:49,108 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;@39eba233, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:22:49,108 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:22:49,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 58 states have internal predecessors, (82), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-12 02:22:49,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-12 02:22:49,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:49,138 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:22:49,139 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:49,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:49,145 INFO L85 PathProgramCache]: Analyzing trace with hash 289311522, now seen corresponding path program 1 times [2023-11-12 02:22:49,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:49,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565026084] [2023-11-12 02:22:49,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:49,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:49,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:49,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565026084] [2023-11-12 02:22:49,440 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:22:49,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325088903] [2023-11-12 02:22:49,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:49,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:49,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:49,447 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:49,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:22:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:49,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:22:49,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2023-11-12 02:22:49,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:49,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325088903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:49,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:49,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:22:49,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402221871] [2023-11-12 02:22:49,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:49,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:22:49,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:49,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:22:49,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:22:49,913 INFO L87 Difference]: Start difference. First operand has 88 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 58 states have internal predecessors, (82), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-12 02:22:49,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:49,969 INFO L93 Difference]: Finished difference Result 169 states and 298 transitions. [2023-11-12 02:22:49,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:22:49,972 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) Word has length 183 [2023-11-12 02:22:49,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:49,983 INFO L225 Difference]: With dead ends: 169 [2023-11-12 02:22:49,983 INFO L226 Difference]: Without dead ends: 84 [2023-11-12 02:22:49,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 182 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 02:22:49,995 INFO L413 NwaCegarLoop]: 131 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, 131 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 02:22:49,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:22:50,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-12 02:22:50,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-11-12 02:22:50,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 54 states have internal predecessors, (75), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-12 02:22:50,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 131 transitions. [2023-11-12 02:22:50,070 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 131 transitions. Word has length 183 [2023-11-12 02:22:50,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:50,071 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 131 transitions. [2023-11-12 02:22:50,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-12 02:22:50,072 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 131 transitions. [2023-11-12 02:22:50,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-12 02:22:50,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:50,085 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:22:50,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:22:50,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 02:22:50,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:50,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:50,293 INFO L85 PathProgramCache]: Analyzing trace with hash -870935066, now seen corresponding path program 1 times [2023-11-12 02:22:50,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:50,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845821281] [2023-11-12 02:22:50,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:50,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:50,430 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:50,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584753824] [2023-11-12 02:22:50,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:50,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:50,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:50,433 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:50,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:22:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:50,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:22:50,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-12 02:22:55,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:55,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:55,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845821281] [2023-11-12 02:22:55,232 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:22:55,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584753824] [2023-11-12 02:22:55,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584753824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:55,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:55,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:22:55,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401069471] [2023-11-12 02:22:55,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:55,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:22:55,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:55,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:22:55,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:22:55,237 INFO L87 Difference]: Start difference. First operand 84 states and 131 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-12 02:22:55,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:55,507 INFO L93 Difference]: Finished difference Result 313 states and 488 transitions. [2023-11-12 02:22:55,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:22:55,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 183 [2023-11-12 02:22:55,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:55,513 INFO L225 Difference]: With dead ends: 313 [2023-11-12 02:22:55,514 INFO L226 Difference]: Without dead ends: 232 [2023-11-12 02:22:55,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:22:55,517 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 242 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:55,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 590 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:22:55,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-12 02:22:55,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 88. [2023-11-12 02:22:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 states have internal predecessors, (81), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-12 02:22:55,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 137 transitions. [2023-11-12 02:22:55,542 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 137 transitions. Word has length 183 [2023-11-12 02:22:55,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:55,545 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 137 transitions. [2023-11-12 02:22:55,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-12 02:22:55,545 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 137 transitions. [2023-11-12 02:22:55,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-12 02:22:55,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:55,548 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:22:55,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:55,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:55,755 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:55,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1680281692, now seen corresponding path program 1 times [2023-11-12 02:22:55,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:55,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199490562] [2023-11-12 02:22:55,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:55,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:55,852 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:55,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032323258] [2023-11-12 02:22:55,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:55,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:55,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:55,855 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:55,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:22:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:56,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:22:56,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:57,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-12 02:22:57,860 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:57,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:57,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199490562] [2023-11-12 02:22:57,861 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:22:57,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032323258] [2023-11-12 02:22:57,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032323258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:57,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:57,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:22:57,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991214801] [2023-11-12 02:22:57,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:57,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:22:57,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:57,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:22:57,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:22:57,865 INFO L87 Difference]: Start difference. First operand 88 states and 137 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-12 02:22:58,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:58,112 INFO L93 Difference]: Finished difference Result 317 states and 493 transitions. [2023-11-12 02:22:58,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:22:58,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 183 [2023-11-12 02:22:58,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:58,117 INFO L225 Difference]: With dead ends: 317 [2023-11-12 02:22:58,117 INFO L226 Difference]: Without dead ends: 232 [2023-11-12 02:22:58,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:22:58,120 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 230 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:58,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 618 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:22:58,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-12 02:22:58,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 88. [2023-11-12 02:22:58,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 states have internal predecessors, (81), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-12 02:22:58,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 137 transitions. [2023-11-12 02:22:58,142 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 137 transitions. Word has length 183 [2023-11-12 02:22:58,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:58,143 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 137 transitions. [2023-11-12 02:22:58,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-12 02:22:58,143 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 137 transitions. [2023-11-12 02:22:58,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-12 02:22:58,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:58,147 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:22:58,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:58,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:58,354 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:22:58,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:58,354 INFO L85 PathProgramCache]: Analyzing trace with hash -353782042, now seen corresponding path program 1 times [2023-11-12 02:22:58,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:58,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811457421] [2023-11-12 02:22:58,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:58,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:58,406 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:22:58,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1080063302] [2023-11-12 02:22:58,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:58,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:58,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:58,408 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:58,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:22:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:58,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:22:58,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-12 02:23:02,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:23:02,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:02,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811457421] [2023-11-12 02:23:02,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:23:02,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080063302] [2023-11-12 02:23:02,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080063302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:02,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:02,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:23:02,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223770293] [2023-11-12 02:23:02,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:02,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:23:02,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:02,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:23:02,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:23:02,627 INFO L87 Difference]: Start difference. First operand 88 states and 137 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-12 02:23:02,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:23:02,905 INFO L93 Difference]: Finished difference Result 317 states and 493 transitions. [2023-11-12 02:23:02,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:23:02,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 183 [2023-11-12 02:23:02,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:23:02,911 INFO L225 Difference]: With dead ends: 317 [2023-11-12 02:23:02,912 INFO L226 Difference]: Without dead ends: 232 [2023-11-12 02:23:02,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:23:02,917 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 235 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:23:02,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 805 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:23:02,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-12 02:23:02,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 88. [2023-11-12 02:23:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 states have internal predecessors, (81), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-12 02:23:02,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 137 transitions. [2023-11-12 02:23:02,953 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 137 transitions. Word has length 183 [2023-11-12 02:23:02,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:23:02,955 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 137 transitions. [2023-11-12 02:23:02,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-12 02:23:02,955 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 137 transitions. [2023-11-12 02:23:02,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-12 02:23:02,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:02,960 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:23:02,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:23:03,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:23:03,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:23:03,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:03,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1163128668, now seen corresponding path program 1 times [2023-11-12 02:23:03,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:03,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166913269] [2023-11-12 02:23:03,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:03,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:03,206 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:23:03,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222508408] [2023-11-12 02:23:03,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:03,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:23:03,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:23:03,208 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:23:03,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:23:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:03,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:23:03,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:04,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-12 02:23:04,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:23:04,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:04,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166913269] [2023-11-12 02:23:04,825 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:23:04,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222508408] [2023-11-12 02:23:04,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222508408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:04,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:04,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:23:04,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065165605] [2023-11-12 02:23:04,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:04,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:23:04,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:04,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:23:04,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:23:04,828 INFO L87 Difference]: Start difference. First operand 88 states and 137 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-12 02:23:05,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:23:05,039 INFO L93 Difference]: Finished difference Result 258 states and 398 transitions. [2023-11-12 02:23:05,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:23:05,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 183 [2023-11-12 02:23:05,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:23:05,042 INFO L225 Difference]: With dead ends: 258 [2023-11-12 02:23:05,043 INFO L226 Difference]: Without dead ends: 173 [2023-11-12 02:23:05,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:23:05,044 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 132 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:23:05,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 782 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:23:05,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-12 02:23:05,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 84. [2023-11-12 02:23:05,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 54 states have internal predecessors, (74), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-12 02:23:05,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 130 transitions. [2023-11-12 02:23:05,057 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 130 transitions. Word has length 183 [2023-11-12 02:23:05,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:23:05,058 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 130 transitions. [2023-11-12 02:23:05,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-12 02:23:05,059 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 130 transitions. [2023-11-12 02:23:05,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-11-12 02:23:05,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:05,061 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:23:05,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:23:05,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:23:05,283 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:23:05,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:05,283 INFO L85 PathProgramCache]: Analyzing trace with hash 917703713, now seen corresponding path program 1 times [2023-11-12 02:23:05,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:05,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869013763] [2023-11-12 02:23:05,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:05,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:05,337 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:23:05,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49539332] [2023-11-12 02:23:05,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:05,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:23:05,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:23:05,339 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:23:05,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5a2c19-b734-49ea-981c-d86f810be507/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:23:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:05,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-12 02:23:05,520 INFO L285 TraceCheckSpWp]: Computing forward predicates...