./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-42.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-42.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ec4c283737f978fa6d4250af6fdc7ba2dca7c6fa1da6a09eddd2e4614bb3b424 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:55:10,884 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:55:11,001 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-24 23:55:11,009 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:55:11,010 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:55:11,054 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:55:11,055 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:55:11,055 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:55:11,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:55:11,061 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:55:11,062 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:55:11,062 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:55:11,063 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:55:11,064 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:55:11,065 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:55:11,065 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:55:11,065 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:55:11,066 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:55:11,066 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:55:11,067 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:55:11,067 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:55:11,071 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:55:11,072 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:55:11,073 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:55:11,073 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:55:11,074 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:55:11,074 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:55:11,074 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:55:11,075 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:55:11,075 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:55:11,077 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:55:11,077 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:55:11,077 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:55:11,078 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:55:11,078 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:55:11,078 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:55:11,078 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:55:11,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:55:11,079 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:55:11,079 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:55:11,080 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:55:11,080 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:55:11,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:55:11,080 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:55:11,081 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:55:11,081 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:55:11,081 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:55:11,081 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec4c283737f978fa6d4250af6fdc7ba2dca7c6fa1da6a09eddd2e4614bb3b424 [2023-11-24 23:55:11,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:55:11,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:55:11,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:55:11,433 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:55:11,434 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:55:11,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-42.i [2023-11-24 23:55:14,587 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:55:14,848 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:55:14,849 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-42.i [2023-11-24 23:55:14,859 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/data/e0dd89413/52b77992c29e4deaad31a0b4e78436b2/FLAGefa9538bf [2023-11-24 23:55:14,875 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/data/e0dd89413/52b77992c29e4deaad31a0b4e78436b2 [2023-11-24 23:55:14,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:55:14,880 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:55:14,882 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:55:14,882 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:55:14,888 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:55:14,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:55:14" (1/1) ... [2023-11-24 23:55:14,890 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ed57398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:14, skipping insertion in model container [2023-11-24 23:55:14,891 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:55:14" (1/1) ... [2023-11-24 23:55:14,923 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:55:15,105 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_4d16ad32-1923-4700-aa73-a22fac666475/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-42.i[913,926] [2023-11-24 23:55:15,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:55:15,184 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:55:15,198 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_4d16ad32-1923-4700-aa73-a22fac666475/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-42.i[913,926] [2023-11-24 23:55:15,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:55:15,264 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:55:15,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:15 WrapperNode [2023-11-24 23:55:15,264 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:55:15,266 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:55:15,267 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:55:15,267 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:55:15,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:15" (1/1) ... [2023-11-24 23:55:15,286 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:15" (1/1) ... [2023-11-24 23:55:15,333 INFO L138 Inliner]: procedures = 26, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 123 [2023-11-24 23:55:15,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:55:15,335 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:55:15,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:55:15,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:55:15,345 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:15" (1/1) ... [2023-11-24 23:55:15,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:15" (1/1) ... [2023-11-24 23:55:15,349 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:15" (1/1) ... [2023-11-24 23:55:15,349 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:15" (1/1) ... [2023-11-24 23:55:15,384 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:15" (1/1) ... [2023-11-24 23:55:15,388 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:15" (1/1) ... [2023-11-24 23:55:15,391 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:15" (1/1) ... [2023-11-24 23:55:15,393 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:15" (1/1) ... [2023-11-24 23:55:15,410 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:55:15,412 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:55:15,412 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:55:15,412 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:55:15,413 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:15" (1/1) ... [2023-11-24 23:55:15,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:55:15,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:15,455 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:55:15,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:55:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:55:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:55:15,500 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:55:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:55:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:55:15,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:55:15,623 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:55:15,626 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:55:15,996 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:55:16,292 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:55:16,293 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:55:16,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:16 BoogieIcfgContainer [2023-11-24 23:55:16,295 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:55:16,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:55:16,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:55:16,302 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:55:16,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:55:14" (1/3) ... [2023-11-24 23:55:16,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe70a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:55:16, skipping insertion in model container [2023-11-24 23:55:16,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:15" (2/3) ... [2023-11-24 23:55:16,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe70a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:55:16, skipping insertion in model container [2023-11-24 23:55:16,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:16" (3/3) ... [2023-11-24 23:55:16,305 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_normal_file-42.i [2023-11-24 23:55:16,324 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:55:16,325 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:55:16,371 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:55:16,378 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=FINITE_AUTOMATA, 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;@55a2948b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:55:16,378 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:55:16,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-24 23:55:16,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-24 23:55:16,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:16,396 INFO L195 NwaCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:16,397 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:55:16,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:16,405 INFO L85 PathProgramCache]: Analyzing trace with hash -681676950, now seen corresponding path program 1 times [2023-11-24 23:55:16,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:16,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515735076] [2023-11-24 23:55:16,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:16,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:16,570 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:16,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382997169] [2023-11-24 23:55:16,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:16,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:16,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:16,578 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:16,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:55:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:55:16,866 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:55:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:55:17,008 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-24 23:55:17,011 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 23:55:17,012 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 23:55:17,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:17,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-24 23:55:17,226 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 23:55:17,229 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:55:17,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:55:17 BoogieIcfgContainer [2023-11-24 23:55:17,307 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:55:17,308 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:55:17,308 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:55:17,308 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:55:17,309 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:16" (3/4) ... [2023-11-24 23:55:17,310 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 23:55:17,316 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:55:17,317 INFO L158 Benchmark]: Toolchain (without parser) took 2436.86ms. Allocated memory was 144.7MB in the beginning and 192.9MB in the end (delta: 48.2MB). Free memory was 99.8MB in the beginning and 113.4MB in the end (delta: -13.5MB). Peak memory consumption was 37.6MB. Max. memory is 16.1GB. [2023-11-24 23:55:17,318 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 144.7MB. Free memory is still 88.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:55:17,319 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.23ms. Allocated memory is still 144.7MB. Free memory was 99.5MB in the beginning and 85.9MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 23:55:17,321 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.41ms. Allocated memory is still 144.7MB. Free memory was 85.9MB in the beginning and 82.3MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 23:55:17,322 INFO L158 Benchmark]: Boogie Preprocessor took 75.97ms. Allocated memory is still 144.7MB. Free memory was 82.3MB in the beginning and 80.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:55:17,324 INFO L158 Benchmark]: RCFGBuilder took 883.36ms. Allocated memory was 144.7MB in the beginning and 192.9MB in the end (delta: 48.2MB). Free memory was 80.2MB in the beginning and 144.8MB in the end (delta: -64.6MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2023-11-24 23:55:17,326 INFO L158 Benchmark]: TraceAbstraction took 1008.90ms. Allocated memory is still 192.9MB. Free memory was 143.9MB in the beginning and 113.4MB in the end (delta: 30.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-24 23:55:17,328 INFO L158 Benchmark]: Witness Printer took 8.13ms. Allocated memory is still 192.9MB. Free memory is still 113.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:55:17,332 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 144.7MB. Free memory is still 88.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 383.23ms. Allocated memory is still 144.7MB. Free memory was 99.5MB in the beginning and 85.9MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.41ms. Allocated memory is still 144.7MB. Free memory was 85.9MB in the beginning and 82.3MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.97ms. Allocated memory is still 144.7MB. Free memory was 82.3MB in the beginning and 80.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 883.36ms. Allocated memory was 144.7MB in the beginning and 192.9MB in the end (delta: 48.2MB). Free memory was 80.2MB in the beginning and 144.8MB in the end (delta: -64.6MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1008.90ms. Allocated memory is still 192.9MB. Free memory was 143.9MB in the beginning and 113.4MB in the end (delta: 30.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 8.13ms. Allocated memory is still 192.9MB. Free memory is still 113.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 54, overapproximation of someUnaryDOUBLEoperation at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 47. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed short int var_1_1 = 16; [L23] signed char var_1_5 = -8; [L24] unsigned char var_1_6 = 10; [L25] unsigned char var_1_7 = 128; [L26] unsigned char var_1_8 = 1; [L27] unsigned char var_1_11 = 0; [L28] unsigned char var_1_12 = 0; [L29] signed short int var_1_13 = 200; [L30] float var_1_14 = -0.8; [L31] float var_1_15 = 127.25; [L32] float var_1_16 = 3.5; [L33] unsigned short int var_1_17 = 16; [L34] unsigned char var_1_19 = 1; [L35] unsigned char var_1_20 = 0; [L36] signed short int last_1_var_1_1 = 16; [L37] unsigned char last_1_var_1_6 = 10; [L38] unsigned char last_1_var_1_8 = 1; [L39] signed short int last_1_var_1_13 = 200; [L127] isInitial = 1 [L128] FCALL initially() [L129] COND TRUE 1 [L130] CALL updateLastVariables() [L117] last_1_var_1_1 = var_1_1 [L118] last_1_var_1_6 = var_1_6 [L119] last_1_var_1_8 = var_1_8 [L120] last_1_var_1_13 = var_1_13 [L130] RET updateLastVariables() [L131] CALL updateVariables() [L96] var_1_5 = __VERIFIER_nondet_char() [L97] CALL assume_abort_if_not(var_1_5 >= -127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=128, var_1_8=1] [L20] COND FALSE !(!cond) [L97] RET assume_abort_if_not(var_1_5 >= -127) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=128, var_1_8=1] [L98] CALL assume_abort_if_not(var_1_5 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=128, var_1_8=1] [L20] COND FALSE !(!cond) [L98] RET assume_abort_if_not(var_1_5 <= 127) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=128, var_1_8=1] [L99] var_1_7 = __VERIFIER_nondet_uchar() [L100] CALL assume_abort_if_not(var_1_7 >= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=1] [L20] COND FALSE !(!cond) [L100] RET assume_abort_if_not(var_1_7 >= 127) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=1] [L101] CALL assume_abort_if_not(var_1_7 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=1] [L20] COND FALSE !(!cond) [L101] RET assume_abort_if_not(var_1_7 <= 254) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=1] [L102] var_1_11 = __VERIFIER_nondet_uchar() [L103] CALL assume_abort_if_not(var_1_11 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=1] [L20] COND FALSE !(!cond) [L103] RET assume_abort_if_not(var_1_11 >= 1) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=1] [L104] CALL assume_abort_if_not(var_1_11 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=1] [L20] COND FALSE !(!cond) [L104] RET assume_abort_if_not(var_1_11 <= 1) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=1] [L105] var_1_12 = __VERIFIER_nondet_uchar() [L106] CALL assume_abort_if_not(var_1_12 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=1] [L20] COND FALSE !(!cond) [L106] RET assume_abort_if_not(var_1_12 >= 0) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=1] [L107] CALL assume_abort_if_not(var_1_12 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=1] [L20] COND FALSE !(!cond) [L107] RET assume_abort_if_not(var_1_12 <= 0) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=1] [L108] var_1_15 = __VERIFIER_nondet_float() [L109] CALL assume_abort_if_not((var_1_15 >= -461168.6018427382800e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 4611686.018427382800e+12F && var_1_15 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=1] [L20] COND FALSE !(!cond) [L109] RET assume_abort_if_not((var_1_15 >= -461168.6018427382800e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 4611686.018427382800e+12F && var_1_15 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=1] [L110] var_1_16 = __VERIFIER_nondet_float() [L111] CALL assume_abort_if_not((var_1_16 >= -461168.6018427382800e+13F && var_1_16 <= -1.0e-20F) || (var_1_16 <= 4611686.018427382800e+12F && var_1_16 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=1] [L20] COND FALSE !(!cond) [L111] RET assume_abort_if_not((var_1_16 >= -461168.6018427382800e+13F && var_1_16 <= -1.0e-20F) || (var_1_16 <= 4611686.018427382800e+12F && var_1_16 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=1] [L112] var_1_20 = __VERIFIER_nondet_uchar() [L113] CALL assume_abort_if_not(var_1_20 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_17=16, var_1_19=1, var_1_1=16, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=1] [L20] COND FALSE !(!cond) [L113] RET assume_abort_if_not(var_1_20 >= 0) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_17=16, var_1_19=1, var_1_1=16, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=1] [L114] CALL assume_abort_if_not(var_1_20 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=1] [L20] COND FALSE !(!cond) [L114] RET assume_abort_if_not(var_1_20 <= 0) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=1] [L131] RET updateVariables() [L132] CALL step() [L43] signed long int stepLocal_6 = last_1_var_1_1; [L44] unsigned char stepLocal_5 = ((((last_1_var_1_1) < (8)) ? (last_1_var_1_1) : (8))) <= var_1_5; [L45] COND TRUE stepLocal_5 || last_1_var_1_8 [L46] COND FALSE !(stepLocal_6 <= last_1_var_1_6) [L49] var_1_14 = var_1_16 [L54] COND TRUE var_1_14 <= var_1_15 [L55] var_1_19 = (var_1_12 || var_1_20) [L57] COND FALSE !(var_1_5 >= -2) [L60] unsigned char stepLocal_4 = var_1_6; [L61] signed long int stepLocal_3 = var_1_6 / var_1_7; [L62] COND TRUE last_1_var_1_13 >= stepLocal_3 [L63] COND TRUE stepLocal_4 != ((((((((var_1_6) > (last_1_var_1_13)) ? (var_1_6) : (last_1_var_1_13)))) > (var_1_5)) ? (((((var_1_6) > (last_1_var_1_13)) ? (var_1_6) : (last_1_var_1_13)))) : (var_1_5))) [L64] var_1_13 = var_1_7 [L71] unsigned char stepLocal_7 = var_1_6; [L72] COND FALSE !(stepLocal_7 > var_1_6) [L75] unsigned char stepLocal_0 = var_1_6; [L76] COND FALSE !(\read(var_1_19)) [L79] COND FALSE !(((((var_1_5) < 0 ) ? -(var_1_5) : (var_1_5))) >= stepLocal_0) [L83] unsigned char stepLocal_2 = var_1_19 && var_1_19; [L84] unsigned char stepLocal_1 = var_1_7; [L85] COND FALSE !((49.5f <= var_1_14) && stepLocal_2) [L92] var_1_8 = var_1_12 [L132] RET step() [L133] CALL, EXPR property() [L123-L124] return ((((((var_1_19 ? (var_1_1 == ((signed short int) ((((var_1_6) > (var_1_6)) ? (var_1_6) : (var_1_6))))) : ((((((var_1_5) < 0 ) ? -(var_1_5) : (var_1_5))) >= var_1_6) ? (var_1_1 == ((signed short int) var_1_5)) : 1)) && ((var_1_5 >= -2) ? (var_1_6 == ((unsigned char) (var_1_7 - 100))) : 1)) && (((49.5f <= var_1_14) && (var_1_19 && var_1_19)) ? ((var_1_13 < var_1_7) ? (var_1_8 == ((unsigned char) (var_1_19 || var_1_11))) : (var_1_8 == ((unsigned char) var_1_11))) : (var_1_8 == ((unsigned char) var_1_12)))) && ((last_1_var_1_13 >= (var_1_6 / var_1_7)) ? ((var_1_6 != ((((((((var_1_6) > (last_1_var_1_13)) ? (var_1_6) : (last_1_var_1_13)))) > (var_1_5)) ? (((((var_1_6) > (last_1_var_1_13)) ? (var_1_6) : (last_1_var_1_13)))) : (var_1_5)))) ? (var_1_13 == ((signed short int) var_1_7)) : (var_1_13 == ((signed short int) last_1_var_1_13))) : (var_1_13 == ((signed short int) var_1_6)))) && (((((((last_1_var_1_1) < (8)) ? (last_1_var_1_1) : (8))) <= var_1_5) || last_1_var_1_8) ? ((last_1_var_1_1 <= last_1_var_1_6) ? (var_1_14 == ((float) (var_1_15 + var_1_16))) : (var_1_14 == ((float) var_1_16))) : (var_1_14 == ((float) var_1_16)))) && ((var_1_6 > var_1_6) ? (var_1_17 == ((unsigned short int) ((((25) > ((var_1_13 + var_1_6))) ? (25) : ((var_1_13 + var_1_6)))))) : 1)) && ((var_1_14 <= var_1_15) ? (var_1_19 == ((unsigned char) (var_1_12 || var_1_20))) : 1) ; [L133] RET, EXPR property() [L133] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=199, var_1_14=2, var_1_16=2, var_1_17=16, var_1_19=0, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=0] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=199, var_1_14=2, var_1_16=2, var_1_17=16, var_1_19=0, var_1_1=16, var_1_20=0, var_1_5=-3, var_1_6=10, var_1_7=199, var_1_8=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-24 23:55:17,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-42.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ec4c283737f978fa6d4250af6fdc7ba2dca7c6fa1da6a09eddd2e4614bb3b424 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:55:19,947 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:55:20,069 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-24 23:55:20,076 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:55:20,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:55:20,120 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:55:20,121 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:55:20,121 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:55:20,122 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:55:20,123 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:55:20,123 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:55:20,124 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:55:20,124 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:55:20,125 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:55:20,125 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:55:20,126 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:55:20,127 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:55:20,127 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:55:20,128 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:55:20,131 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:55:20,132 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:55:20,133 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:55:20,133 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:55:20,133 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:55:20,134 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:55:20,134 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:55:20,135 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:55:20,135 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:55:20,136 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:55:20,136 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:55:20,138 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:55:20,138 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:55:20,139 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:55:20,139 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:55:20,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:55:20,140 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:55:20,140 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:55:20,140 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:55:20,141 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:55:20,142 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:55:20,142 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:55:20,142 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:55:20,143 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:55:20,143 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:55:20,144 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec4c283737f978fa6d4250af6fdc7ba2dca7c6fa1da6a09eddd2e4614bb3b424 [2023-11-24 23:55:20,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:55:20,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:55:20,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:55:20,581 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:55:20,581 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:55:20,583 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-42.i [2023-11-24 23:55:23,827 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:55:24,171 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:55:24,173 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-42.i [2023-11-24 23:55:24,182 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/data/6603f9658/6855d229196540d6b3fd7066574fedc2/FLAG18e26c923 [2023-11-24 23:55:24,197 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/data/6603f9658/6855d229196540d6b3fd7066574fedc2 [2023-11-24 23:55:24,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:55:24,202 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:55:24,203 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:55:24,204 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:55:24,210 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:55:24,211 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:24,212 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d7c4b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24, skipping insertion in model container [2023-11-24 23:55:24,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:24,244 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:55:24,401 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_4d16ad32-1923-4700-aa73-a22fac666475/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-42.i[913,926] [2023-11-24 23:55:24,458 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:55:24,476 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:55:24,491 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_4d16ad32-1923-4700-aa73-a22fac666475/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-42.i[913,926] [2023-11-24 23:55:24,524 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:55:24,556 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:55:24,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24 WrapperNode [2023-11-24 23:55:24,557 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:55:24,558 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:55:24,560 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:55:24,560 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:55:24,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:24,617 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:24,661 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 122 [2023-11-24 23:55:24,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:55:24,676 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:55:24,676 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:55:24,676 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:55:24,690 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:24,692 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:24,697 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:24,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:24,723 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:24,741 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:24,744 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:24,746 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:24,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:55:24,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:55:24,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:55:24,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:55:24,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:24,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:55:24,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:24,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:55:24,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:55:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:55:24,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:55:24,836 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:55:24,836 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:55:24,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:55:24,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:55:24,925 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:55:24,928 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:55:25,505 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:55:25,604 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:55:25,608 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:55:25,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:25 BoogieIcfgContainer [2023-11-24 23:55:25,609 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:55:25,615 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:55:25,616 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:55:25,619 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:55:25,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:55:24" (1/3) ... [2023-11-24 23:55:25,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63995c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:55:25, skipping insertion in model container [2023-11-24 23:55:25,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (2/3) ... [2023-11-24 23:55:25,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63995c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:55:25, skipping insertion in model container [2023-11-24 23:55:25,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:25" (3/3) ... [2023-11-24 23:55:25,625 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_normal_file-42.i [2023-11-24 23:55:25,643 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:55:25,643 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:55:25,684 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:55:25,690 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=FINITE_AUTOMATA, 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;@65b05cf0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:55:25,691 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:55:25,694 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 32 states have (on average 1.5) internal successors, (48), 33 states have internal predecessors, (48), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-24 23:55:25,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-24 23:55:25,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:25,705 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:25,705 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:55:25,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:25,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1441148856, now seen corresponding path program 1 times [2023-11-24 23:55:25,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:55:25,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584334604] [2023-11-24 23:55:25,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:25,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:55:25,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:55:25,736 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:55:25,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 23:55:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:26,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-24 23:55:26,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-24 23:55:26,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:26,099 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:55:26,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584334604] [2023-11-24 23:55:26,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584334604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:26,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:26,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:55:26,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956660428] [2023-11-24 23:55:26,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:26,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 23:55:26,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:55:26,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 23:55:26,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:55:26,147 INFO L87 Difference]: Start difference. First operand has 47 states, 32 states have (on average 1.5) internal successors, (48), 33 states have internal predecessors, (48), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-24 23:55:26,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:26,336 INFO L93 Difference]: Finished difference Result 91 states and 154 transitions. [2023-11-24 23:55:26,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 23:55:26,344 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 83 [2023-11-24 23:55:26,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:26,351 INFO L225 Difference]: With dead ends: 91 [2023-11-24 23:55:26,351 INFO L226 Difference]: Without dead ends: 45 [2023-11-24 23:55:26,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:55:26,359 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:26,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:55:26,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-24 23:55:26,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-11-24 23:55:26,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 31 states have internal predecessors, (43), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-24 23:55:26,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 67 transitions. [2023-11-24 23:55:26,405 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 67 transitions. Word has length 83 [2023-11-24 23:55:26,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:26,406 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 67 transitions. [2023-11-24 23:55:26,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-24 23:55:26,406 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 67 transitions. [2023-11-24 23:55:26,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-24 23:55:26,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:26,411 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:26,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-24 23:55:26,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:55:26,615 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:55:26,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:26,616 INFO L85 PathProgramCache]: Analyzing trace with hash 2116648844, now seen corresponding path program 1 times [2023-11-24 23:55:26,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:55:26,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028405787] [2023-11-24 23:55:26,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:26,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:55:26,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:55:26,620 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:55:26,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-24 23:55:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:26,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:55:26,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-24 23:55:27,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:27,180 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:55:27,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028405787] [2023-11-24 23:55:27,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2028405787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:27,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:27,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:27,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553557652] [2023-11-24 23:55:27,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:27,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:55:27,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:55:27,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:55:27,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:27,185 INFO L87 Difference]: Start difference. First operand 45 states and 67 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-24 23:55:27,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:27,743 INFO L93 Difference]: Finished difference Result 134 states and 200 transitions. [2023-11-24 23:55:27,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:55:27,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 83 [2023-11-24 23:55:27,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:27,755 INFO L225 Difference]: With dead ends: 134 [2023-11-24 23:55:27,756 INFO L226 Difference]: Without dead ends: 90 [2023-11-24 23:55:27,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:27,758 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 63 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:27,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 186 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:55:27,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-24 23:55:27,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 70. [2023-11-24 23:55:27,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 43 states have internal predecessors, (55), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-24 23:55:27,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 103 transitions. [2023-11-24 23:55:27,788 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 103 transitions. Word has length 83 [2023-11-24 23:55:27,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:27,789 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 103 transitions. [2023-11-24 23:55:27,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-24 23:55:27,789 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 103 transitions. [2023-11-24 23:55:27,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-24 23:55:27,791 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:27,792 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:27,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-24 23:55:27,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:55:27,998 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:55:27,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:27,999 INFO L85 PathProgramCache]: Analyzing trace with hash 2013944679, now seen corresponding path program 1 times [2023-11-24 23:55:28,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:55:28,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168946839] [2023-11-24 23:55:28,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:28,000 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:55:28,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:55:28,002 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:55:28,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-24 23:55:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:28,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:55:28,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:28,836 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-24 23:55:28,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:28,837 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:55:28,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168946839] [2023-11-24 23:55:28,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168946839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:28,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:28,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:55:28,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571840889] [2023-11-24 23:55:28,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:28,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:55:28,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:55:28,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:55:28,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:28,841 INFO L87 Difference]: Start difference. First operand 70 states and 103 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-24 23:55:29,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:29,652 INFO L93 Difference]: Finished difference Result 175 states and 259 transitions. [2023-11-24 23:55:29,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:55:29,663 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 84 [2023-11-24 23:55:29,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:29,666 INFO L225 Difference]: With dead ends: 175 [2023-11-24 23:55:29,666 INFO L226 Difference]: Without dead ends: 131 [2023-11-24 23:55:29,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:55:29,669 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 93 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:29,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 231 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 23:55:29,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-24 23:55:29,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 112. [2023-11-24 23:55:29,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 72 states have (on average 1.3194444444444444) internal successors, (95), 72 states have internal predecessors, (95), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-24 23:55:29,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 167 transitions. [2023-11-24 23:55:29,705 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 167 transitions. Word has length 84 [2023-11-24 23:55:29,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:29,706 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 167 transitions. [2023-11-24 23:55:29,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-24 23:55:29,706 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 167 transitions. [2023-11-24 23:55:29,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-24 23:55:29,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:29,709 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:29,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-24 23:55:29,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:55:29,914 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:55:29,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:29,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1002827429, now seen corresponding path program 1 times [2023-11-24 23:55:29,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:55:29,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998970938] [2023-11-24 23:55:29,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:29,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:55:29,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:55:29,918 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:55:29,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-24 23:55:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:30,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:55:30,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-24 23:55:30,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:30,184 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:55:30,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998970938] [2023-11-24 23:55:30,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1998970938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:30,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:30,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:30,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56089844] [2023-11-24 23:55:30,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:30,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:55:30,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:55:30,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:55:30,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:30,196 INFO L87 Difference]: Start difference. First operand 112 states and 167 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-24 23:55:30,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:30,400 INFO L93 Difference]: Finished difference Result 198 states and 297 transitions. [2023-11-24 23:55:30,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:55:30,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 84 [2023-11-24 23:55:30,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:30,413 INFO L225 Difference]: With dead ends: 198 [2023-11-24 23:55:30,413 INFO L226 Difference]: Without dead ends: 112 [2023-11-24 23:55:30,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:30,415 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 11 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:30,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 105 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:55:30,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-24 23:55:30,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-11-24 23:55:30,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 72 states have (on average 1.2916666666666667) internal successors, (93), 72 states have internal predecessors, (93), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-24 23:55:30,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 165 transitions. [2023-11-24 23:55:30,443 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 165 transitions. Word has length 84 [2023-11-24 23:55:30,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:30,444 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 165 transitions. [2023-11-24 23:55:30,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-24 23:55:30,444 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 165 transitions. [2023-11-24 23:55:30,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-24 23:55:30,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:30,446 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:30,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:30,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:55:30,663 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:55:30,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:30,664 INFO L85 PathProgramCache]: Analyzing trace with hash 193480803, now seen corresponding path program 1 times [2023-11-24 23:55:30,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:55:30,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934222752] [2023-11-24 23:55:30,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:30,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:55:30,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:55:30,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:55:30,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-24 23:55:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:30,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:55:30,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 149 proven. 9 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-24 23:55:31,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:55:31,541 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 51 proven. 12 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-11-24 23:55:31,541 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:55:31,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934222752] [2023-11-24 23:55:31,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934222752] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:55:31,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1535253426] [2023-11-24 23:55:31,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:31,542 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:55:31,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:55:31,549 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:55:31,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-24 23:55:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:32,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:55:32,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:32,980 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-24 23:55:32,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:32,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1535253426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:32,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:55:32,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 9] total 17 [2023-11-24 23:55:32,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804218035] [2023-11-24 23:55:32,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:32,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:55:32,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:55:32,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:55:32,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2023-11-24 23:55:32,985 INFO L87 Difference]: Start difference. First operand 112 states and 165 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-24 23:55:37,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:37,036 INFO L93 Difference]: Finished difference Result 306 states and 442 transitions. [2023-11-24 23:55:37,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:55:37,045 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 84 [2023-11-24 23:55:37,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:37,048 INFO L225 Difference]: With dead ends: 306 [2023-11-24 23:55:37,049 INFO L226 Difference]: Without dead ends: 262 [2023-11-24 23:55:37,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-11-24 23:55:37,051 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 122 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:37,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 309 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-24 23:55:37,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-11-24 23:55:37,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 217. [2023-11-24 23:55:37,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 148 states have (on average 1.3243243243243243) internal successors, (196), 149 states have internal predecessors, (196), 62 states have call successors, (62), 6 states have call predecessors, (62), 6 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-24 23:55:37,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 320 transitions. [2023-11-24 23:55:37,105 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 320 transitions. Word has length 84 [2023-11-24 23:55:37,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:37,106 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 320 transitions. [2023-11-24 23:55:37,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-24 23:55:37,106 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 320 transitions. [2023-11-24 23:55:37,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-24 23:55:37,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:37,108 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:37,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:37,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:37,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:55:37,513 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:55:37,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:37,514 INFO L85 PathProgramCache]: Analyzing trace with hash 451646241, now seen corresponding path program 1 times [2023-11-24 23:55:37,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:55:37,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866961076] [2023-11-24 23:55:37,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:37,515 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:55:37,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:55:37,517 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:55:37,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-24 23:55:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:37,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:55:37,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 149 proven. 9 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-24 23:55:37,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:55:38,324 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 51 proven. 12 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-11-24 23:55:38,324 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:55:38,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866961076] [2023-11-24 23:55:38,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866961076] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:55:38,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [819634767] [2023-11-24 23:55:38,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:38,325 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:55:38,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:55:38,340 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:55:38,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-11-24 23:55:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:38,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:55:38,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:39,852 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-24 23:55:39,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:39,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [819634767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:39,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:55:39,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9, 9] total 16 [2023-11-24 23:55:39,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934800078] [2023-11-24 23:55:39,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:39,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:55:39,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:55:39,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:55:39,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-11-24 23:55:39,855 INFO L87 Difference]: Start difference. First operand 217 states and 320 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-24 23:55:42,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:42,563 INFO L93 Difference]: Finished difference Result 373 states and 548 transitions. [2023-11-24 23:55:42,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:55:42,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 84 [2023-11-24 23:55:42,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:42,570 INFO L225 Difference]: With dead ends: 373 [2023-11-24 23:55:42,570 INFO L226 Difference]: Without dead ends: 287 [2023-11-24 23:55:42,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 234 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:55:42,572 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 76 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:42,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 245 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-24 23:55:42,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-11-24 23:55:42,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 259. [2023-11-24 23:55:42,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 177 states have (on average 1.3220338983050848) internal successors, (234), 178 states have internal predecessors, (234), 74 states have call successors, (74), 7 states have call predecessors, (74), 7 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2023-11-24 23:55:42,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 382 transitions. [2023-11-24 23:55:42,619 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 382 transitions. Word has length 84 [2023-11-24 23:55:42,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:42,619 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 382 transitions. [2023-11-24 23:55:42,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-24 23:55:42,620 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 382 transitions. [2023-11-24 23:55:42,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-24 23:55:42,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:42,622 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:42,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:42,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:43,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:55:43,027 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:55:43,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:43,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1401081611, now seen corresponding path program 1 times [2023-11-24 23:55:43,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:55:43,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180081284] [2023-11-24 23:55:43,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:43,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:55:43,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:55:43,030 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:55:43,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-24 23:55:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:43,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:55:43,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 149 proven. 9 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-24 23:55:43,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:55:43,811 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 51 proven. 12 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-11-24 23:55:43,811 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:55:43,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180081284] [2023-11-24 23:55:43,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180081284] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:55:43,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [88385790] [2023-11-24 23:55:43,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:43,812 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:55:43,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:55:43,815 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:55:43,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-11-24 23:55:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:44,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:55:44,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:44,496 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 149 proven. 9 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-24 23:55:44,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:55:44,741 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 51 proven. 12 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-11-24 23:55:44,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [88385790] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:55:44,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179083836] [2023-11-24 23:55:44,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:44,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:44,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:44,743 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:44,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-24 23:55:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:44,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:55:44,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 149 proven. 9 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-24 23:55:45,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:55:45,280 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 51 proven. 12 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-11-24 23:55:45,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179083836] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:55:45,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-24 23:55:45,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 13 [2023-11-24 23:55:45,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768530402] [2023-11-24 23:55:45,282 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-24 23:55:45,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-24 23:55:45,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:55:45,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-24 23:55:45,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:55:45,286 INFO L87 Difference]: Start difference. First operand 259 states and 382 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-24 23:55:46,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:46,637 INFO L93 Difference]: Finished difference Result 697 states and 945 transitions. [2023-11-24 23:55:46,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-24 23:55:46,640 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 85 [2023-11-24 23:55:46,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:46,645 INFO L225 Difference]: With dead ends: 697 [2023-11-24 23:55:46,645 INFO L226 Difference]: Without dead ends: 548 [2023-11-24 23:55:46,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 492 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2023-11-24 23:55:46,651 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 279 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:46,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 266 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 23:55:46,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-11-24 23:55:46,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 488. [2023-11-24 23:55:46,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 346 states have (on average 1.260115606936416) internal successors, (436), 348 states have internal predecessors, (436), 112 states have call successors, (112), 29 states have call predecessors, (112), 29 states have return successors, (112), 110 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-24 23:55:46,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 660 transitions. [2023-11-24 23:55:46,755 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 660 transitions. Word has length 85 [2023-11-24 23:55:46,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:46,758 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 660 transitions. [2023-11-24 23:55:46,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-24 23:55:46,758 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 660 transitions. [2023-11-24 23:55:46,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-24 23:55:46,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:46,760 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:46,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:46,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:47,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:47,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt [2023-11-24 23:55:47,366 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:55:47,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:47,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1882768435, now seen corresponding path program 1 times [2023-11-24 23:55:47,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:55:47,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097452769] [2023-11-24 23:55:47,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:47,367 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:55:47,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:55:47,369 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:55:47,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d16ad32-1923-4700-aa73-a22fac666475/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-24 23:55:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:47,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-24 23:55:47,554 INFO L285 TraceCheckSpWp]: Computing forward predicates...