./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire --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 642101326caa2098c0a839a00c9bcfc0200d095adff71c7c8d2e655beccf37a7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:10:39,893 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:10:39,980 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:10:39,986 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:10:39,987 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:10:40,011 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:10:40,012 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:10:40,012 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:10:40,013 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:10:40,014 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:10:40,014 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:10:40,015 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:10:40,015 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:10:40,016 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:10:40,016 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:10:40,017 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:10:40,017 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:10:40,018 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:10:40,018 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:10:40,019 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:10:40,019 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:10:40,021 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:10:40,022 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:10:40,022 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:10:40,023 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:10:40,023 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:10:40,023 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:10:40,024 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:10:40,024 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:10:40,025 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:10:40,025 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:10:40,025 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:10:40,026 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:10:40,026 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:10:40,027 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:10:40,027 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:10:40,027 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:10:40,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:10:40,029 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:10:40,030 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:10:40,030 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:10:40,030 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:10:40,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:10:40,031 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:10:40,031 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:10:40,032 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:10:40,032 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:10:40,032 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_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 642101326caa2098c0a839a00c9bcfc0200d095adff71c7c8d2e655beccf37a7 [2023-11-23 21:10:40,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:10:40,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:10:40,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:10:40,335 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:10:40,336 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:10:40,337 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.i [2023-11-23 21:10:43,633 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:10:43,946 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:10:43,947 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.i [2023-11-23 21:10:43,958 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/data/a5e66d362/a530096f84be4e2f9f79f2544f556362/FLAGaa41b968f [2023-11-23 21:10:43,973 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/data/a5e66d362/a530096f84be4e2f9f79f2544f556362 [2023-11-23 21:10:43,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:10:43,978 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:10:43,979 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:10:43,980 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:10:43,986 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:10:43,987 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:43" (1/1) ... [2023-11-23 21:10:43,988 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee1dea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:43, skipping insertion in model container [2023-11-23 21:10:43,988 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:43" (1/1) ... [2023-11-23 21:10:44,036 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:10:44,176 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_7a2af15e-7162-40b4-a4dd-3c1d3b974594/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.i[912,925] [2023-11-23 21:10:44,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:10:44,263 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:10:44,273 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_7a2af15e-7162-40b4-a4dd-3c1d3b974594/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.i[912,925] [2023-11-23 21:10:44,306 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:10:44,329 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:10:44,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:44 WrapperNode [2023-11-23 21:10:44,330 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:10:44,331 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:10:44,331 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:10:44,331 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:10:44,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:44" (1/1) ... [2023-11-23 21:10:44,351 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:44" (1/1) ... [2023-11-23 21:10:44,414 INFO L138 Inliner]: procedures = 26, calls = 28, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 154 [2023-11-23 21:10:44,415 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:10:44,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:10:44,416 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:10:44,416 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:10:44,426 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:44" (1/1) ... [2023-11-23 21:10:44,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:44" (1/1) ... [2023-11-23 21:10:44,430 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:44" (1/1) ... [2023-11-23 21:10:44,430 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:44" (1/1) ... [2023-11-23 21:10:44,442 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:44" (1/1) ... [2023-11-23 21:10:44,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:44" (1/1) ... [2023-11-23 21:10:44,449 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:44" (1/1) ... [2023-11-23 21:10:44,451 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:44" (1/1) ... [2023-11-23 21:10:44,456 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:10:44,457 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:10:44,457 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:10:44,458 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:10:44,459 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:44" (1/1) ... [2023-11-23 21:10:44,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:10:44,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:44,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:10:44,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:10:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:10:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:10:44,558 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:10:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:10:44,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:10:44,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:10:44,698 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:10:44,702 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:10:45,152 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:10:45,526 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:10:45,526 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:10:45,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:45 BoogieIcfgContainer [2023-11-23 21:10:45,528 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:10:45,531 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:10:45,531 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:10:45,535 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:10:45,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:10:43" (1/3) ... [2023-11-23 21:10:45,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7497bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:10:45, skipping insertion in model container [2023-11-23 21:10:45,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:44" (2/3) ... [2023-11-23 21:10:45,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7497bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:10:45, skipping insertion in model container [2023-11-23 21:10:45,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:45" (3/3) ... [2023-11-23 21:10:45,539 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_normal_file-3.i [2023-11-23 21:10:45,559 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:10:45,559 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:10:45,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:10:45,630 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;@760bb007, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:10:45,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:10:45,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 21:10:45,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-23 21:10:45,646 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:45,647 INFO L195 NwaCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:10:45,648 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:10:45,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:45,657 INFO L85 PathProgramCache]: Analyzing trace with hash 156367921, now seen corresponding path program 1 times [2023-11-23 21:10:45,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:10:45,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446282919] [2023-11-23 21:10:45,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:45,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:10:45,879 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:10:45,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [61537164] [2023-11-23 21:10:45,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:45,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:10:45,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:45,888 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:10:45,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:10:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:10:46,138 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:10:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:10:46,308 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:10:46,312 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:10:46,313 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:10:46,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:10:46,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:10:46,537 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:10:46,541 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:10:46,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:10:46 BoogieIcfgContainer [2023-11-23 21:10:46,610 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:10:46,610 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:10:46,611 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:10:46,611 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:10:46,611 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:45" (3/4) ... [2023-11-23 21:10:46,614 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:10:46,615 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:10:46,616 INFO L158 Benchmark]: Toolchain (without parser) took 2638.12ms. Allocated memory is still 178.3MB. Free memory was 131.2MB in the beginning and 83.9MB in the end (delta: 47.3MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. [2023-11-23 21:10:46,617 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 138.4MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:10:46,617 INFO L158 Benchmark]: CACSL2BoogieTranslator took 350.80ms. Allocated memory is still 178.3MB. Free memory was 131.2MB in the beginning and 117.1MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 21:10:46,618 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.01ms. Allocated memory is still 178.3MB. Free memory was 117.1MB in the beginning and 113.5MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:10:46,619 INFO L158 Benchmark]: Boogie Preprocessor took 41.01ms. Allocated memory is still 178.3MB. Free memory was 113.5MB in the beginning and 111.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:10:46,619 INFO L158 Benchmark]: RCFGBuilder took 1071.15ms. Allocated memory is still 178.3MB. Free memory was 111.4MB in the beginning and 121.7MB in the end (delta: -10.3MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2023-11-23 21:10:46,620 INFO L158 Benchmark]: TraceAbstraction took 1078.85ms. Allocated memory is still 178.3MB. Free memory was 120.6MB in the beginning and 85.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-11-23 21:10:46,621 INFO L158 Benchmark]: Witness Printer took 4.67ms. Allocated memory is still 178.3MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:10:46,624 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 138.4MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 350.80ms. Allocated memory is still 178.3MB. Free memory was 131.2MB in the beginning and 117.1MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.01ms. Allocated memory is still 178.3MB. Free memory was 117.1MB in the beginning and 113.5MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.01ms. Allocated memory is still 178.3MB. Free memory was 113.5MB in the beginning and 111.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1071.15ms. Allocated memory is still 178.3MB. Free memory was 111.4MB in the beginning and 121.7MB in the end (delta: -10.3MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1078.85ms. Allocated memory is still 178.3MB. Free memory was 120.6MB in the beginning and 85.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Witness Printer took 4.67ms. Allocated memory is still 178.3MB. Free memory is still 83.9MB. 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 someBinaryDOUBLEComparisonOperation at line 56, overapproximation of bitwiseOr at line 80. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed char var_1_1 = -64; [L23] unsigned char var_1_3 = 1; [L24] signed char var_1_5 = -32; [L25] unsigned short int var_1_6 = 256; [L26] unsigned long int var_1_10 = 256; [L27] double var_1_12 = 8.2; [L28] signed char var_1_13 = 16; [L29] signed char var_1_14 = 10; [L30] double var_1_15 = 199.125; [L31] double var_1_16 = 9.4; [L32] double var_1_17 = 9999999999999.6; [L33] unsigned char var_1_20 = 32; [L34] unsigned char var_1_21 = 128; [L35] unsigned char var_1_22 = 64; [L36] unsigned long int var_1_23 = 64; [L37] unsigned long int last_1_var_1_10 = 256; [L38] unsigned char last_1_var_1_20 = 32; [L121] isInitial = 1 [L122] FCALL initially() [L123] COND TRUE 1 [L124] CALL updateLastVariables() [L113] last_1_var_1_10 = var_1_10 [L114] last_1_var_1_20 = var_1_20 [L124] RET updateLastVariables() [L125] CALL updateVariables() [L88] var_1_3 = __VERIFIER_nondet_uchar() [L89] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_5=-32, var_1_6=256] [L20] COND FALSE !(!cond) [L89] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_5=-32, var_1_6=256] [L90] CALL assume_abort_if_not(var_1_3 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-32, var_1_6=256] [L20] COND FALSE !(!cond) [L90] RET assume_abort_if_not(var_1_3 <= 1) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-32, var_1_6=256] [L91] var_1_5 = __VERIFIER_nondet_char() [L92] CALL assume_abort_if_not(var_1_5 >= -127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L20] COND FALSE !(!cond) [L92] RET assume_abort_if_not(var_1_5 >= -127) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L93] CALL assume_abort_if_not(var_1_5 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L20] COND FALSE !(!cond) [L93] RET assume_abort_if_not(var_1_5 <= 126) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L94] var_1_13 = __VERIFIER_nondet_char() [L95] CALL assume_abort_if_not(var_1_13 >= -1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L20] COND FALSE !(!cond) [L95] RET assume_abort_if_not(var_1_13 >= -1) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L96] CALL assume_abort_if_not(var_1_13 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L20] COND FALSE !(!cond) [L96] RET assume_abort_if_not(var_1_13 <= 127) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L97] var_1_14 = __VERIFIER_nondet_char() [L98] CALL assume_abort_if_not(var_1_14 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=127, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L20] COND FALSE !(!cond) [L98] RET assume_abort_if_not(var_1_14 >= 0) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=127, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L99] CALL assume_abort_if_not(var_1_14 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=127, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L20] COND FALSE !(!cond) [L99] RET assume_abort_if_not(var_1_14 <= 127) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=127, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L100] var_1_15 = __VERIFIER_nondet_double() [L101] CALL assume_abort_if_not((var_1_15 >= -922337.2036854776000e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854776000e+12F && var_1_15 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=127, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L20] COND FALSE !(!cond) [L101] RET assume_abort_if_not((var_1_15 >= -922337.2036854776000e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854776000e+12F && var_1_15 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=127, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L102] CALL assume_abort_if_not(var_1_15 != 0.0F) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=127, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L20] COND FALSE !(!cond) [L102] RET assume_abort_if_not(var_1_15 != 0.0F) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=127, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L103] var_1_16 = __VERIFIER_nondet_double() [L104] CALL assume_abort_if_not((var_1_16 >= -922337.2036854765600e+13F && var_1_16 <= -1.0e-20F) || (var_1_16 <= 9223372.036854765600e+12F && var_1_16 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=127, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L20] COND FALSE !(!cond) [L104] RET assume_abort_if_not((var_1_16 >= -922337.2036854765600e+13F && var_1_16 <= -1.0e-20F) || (var_1_16 <= 9223372.036854765600e+12F && var_1_16 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=127, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L105] var_1_21 = __VERIFIER_nondet_uchar() [L106] CALL assume_abort_if_not(var_1_21 >= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=127, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=136, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L20] COND FALSE !(!cond) [L106] RET assume_abort_if_not(var_1_21 >= 127) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=127, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=136, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L107] CALL assume_abort_if_not(var_1_21 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=127, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=136, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L20] COND FALSE !(!cond) [L107] RET assume_abort_if_not(var_1_21 <= 254) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=127, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=136, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L108] var_1_22 = __VERIFIER_nondet_uchar() [L109] CALL assume_abort_if_not(var_1_22 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=127, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=136, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L20] COND FALSE !(!cond) [L109] RET assume_abort_if_not(var_1_22 >= 0) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=127, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=136, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L110] CALL assume_abort_if_not(var_1_22 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=127, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=136, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L20] COND FALSE !(!cond) [L110] RET assume_abort_if_not(var_1_22 <= 127) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=127, var_1_14=127, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=136, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L125] RET updateVariables() [L126] CALL step() [L42] COND FALSE !(\read(var_1_3)) [L47] signed long int stepLocal_2 = var_1_5 * var_1_13; [L48] COND TRUE stepLocal_2 > last_1_var_1_10 [L49] var_1_20 = ((((((((var_1_21 - var_1_14)) > ((var_1_22 + 8))) ? ((var_1_21 - var_1_14)) : ((var_1_22 + 8)))) < 0 ) ? -(((((var_1_21 - var_1_14)) > ((var_1_22 + 8))) ? ((var_1_21 - var_1_14)) : ((var_1_22 + 8)))) : (((((var_1_21 - var_1_14)) > ((var_1_22 + 8))) ? ((var_1_21 - var_1_14)) : ((var_1_22 + 8)))))) [L51] COND TRUE (((((var_1_14 - var_1_20)) < (var_1_5)) ? ((var_1_14 - var_1_20)) : (var_1_5))) < var_1_20 [L52] COND FALSE !(\read(var_1_3)) [L56] unsigned char stepLocal_1 = var_1_17 <= var_1_17; [L57] COND TRUE stepLocal_1 || var_1_3 [L58] COND TRUE (var_1_17 / var_1_15) > 25.25 [L59] var_1_12 = 128.5 [L64] COND TRUE 99999.8f < var_1_17 [L65] COND TRUE ! var_1_3 [L66] COND FALSE !(var_1_17 >= (var_1_17 / 2.5f)) [L75] COND FALSE !((var_1_17 + var_1_12) <= var_1_17) [L80] EXPR var_1_6 ^ var_1_20 [L80] unsigned long int stepLocal_0 = (var_1_6 ^ var_1_20) + var_1_23; [L81] COND TRUE var_1_20 <= stepLocal_0 [L82] COND FALSE !(var_1_12 == var_1_12) [L126] RET step() [L127] CALL, EXPR property() [L117] EXPR (((99999.8f < var_1_17) ? ((! var_1_3) ? ((var_1_17 >= (var_1_17 / 2.5f)) ? (var_1_3 ? (var_1_1 == ((signed char) var_1_5)) : (var_1_1 == ((signed char) var_1_5))) : 1) : 1) : 1) && (var_1_3 ? (((last_1_var_1_10 + (var_1_5 + last_1_var_1_20)) >= last_1_var_1_20) ? (var_1_6 == ((unsigned short int) last_1_var_1_20)) : 1) : 1)) && ((var_1_20 <= ((var_1_6 ^ var_1_20) + var_1_23)) ? ((var_1_12 == var_1_12) ? (var_1_10 == ((unsigned long int) 0u)) : 1) : 1) [L117-L118] return (((((((99999.8f < var_1_17) ? ((! var_1_3) ? ((var_1_17 >= (var_1_17 / 2.5f)) ? (var_1_3 ? (var_1_1 == ((signed char) var_1_5)) : (var_1_1 == ((signed char) var_1_5))) : 1) : 1) : 1) && (var_1_3 ? (((last_1_var_1_10 + (var_1_5 + last_1_var_1_20)) >= last_1_var_1_20) ? (var_1_6 == ((unsigned short int) last_1_var_1_20)) : 1) : 1)) && ((var_1_20 <= ((var_1_6 ^ var_1_20) + var_1_23)) ? ((var_1_12 == var_1_12) ? (var_1_10 == ((unsigned long int) 0u)) : 1) : 1)) && (((var_1_17 <= var_1_17) || var_1_3) ? (((var_1_17 / var_1_15) > 25.25) ? (var_1_12 == ((double) 128.5)) : 1) : (var_1_12 == ((double) var_1_16)))) && (((((((var_1_14 - var_1_20)) < (var_1_5)) ? ((var_1_14 - var_1_20)) : (var_1_5))) < var_1_20) ? (var_1_3 ? (var_1_17 == ((double) 128.1)) : 1) : 1)) && (((var_1_5 * var_1_13) > last_1_var_1_10) ? (var_1_20 == ((unsigned char) ((((((((var_1_21 - var_1_14)) > ((var_1_22 + 8))) ? ((var_1_21 - var_1_14)) : ((var_1_22 + 8)))) < 0 ) ? -(((((var_1_21 - var_1_14)) > ((var_1_22 + 8))) ? ((var_1_21 - var_1_14)) : ((var_1_22 + 8)))) : (((((var_1_21 - var_1_14)) > ((var_1_22 + 8))) ? ((var_1_21 - var_1_14)) : ((var_1_22 + 8)))))))) : 1)) && (((var_1_17 + var_1_12) <= var_1_17) ? ((var_1_6 >= var_1_6) ? (var_1_23 == ((unsigned long int) var_1_20)) : 1) : 1) ; [L127] RET, EXPR property() [L127] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=257/2, var_1_13=127, var_1_14=127, var_1_16=0, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=9, var_1_21=136, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=257/2, var_1_13=127, var_1_14=127, var_1_16=0, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=9, var_1_21=136, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=-127, var_1_6=256] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 15, 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=32occurred 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, 57 NumberOfCodeBlocks, 57 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 [2023-11-23 21:10:46,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/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_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire --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 642101326caa2098c0a839a00c9bcfc0200d095adff71c7c8d2e655beccf37a7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:10:49,423 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:10:49,562 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:10:49,570 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:10:49,571 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:10:49,612 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:10:49,613 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:10:49,613 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:10:49,614 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:10:49,619 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:10:49,620 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:10:49,620 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:10:49,621 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:10:49,623 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:10:49,623 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:10:49,624 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:10:49,625 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:10:49,625 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:10:49,626 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:10:49,627 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:10:49,628 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:10:49,628 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:10:49,629 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:10:49,629 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:10:49,630 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:10:49,630 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:10:49,631 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:10:49,631 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:10:49,632 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:10:49,632 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:10:49,634 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:10:49,634 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:10:49,634 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:10:49,635 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:10:49,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:10:49,636 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:10:49,636 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:10:49,637 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:10:49,637 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:10:49,638 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:10:49,638 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:10:49,639 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:10:49,639 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:10:49,642 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:10:49,642 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_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 642101326caa2098c0a839a00c9bcfc0200d095adff71c7c8d2e655beccf37a7 [2023-11-23 21:10:50,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:10:50,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:10:50,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:10:50,128 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:10:50,129 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:10:50,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.i [2023-11-23 21:10:53,341 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:10:53,640 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:10:53,641 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.i [2023-11-23 21:10:53,656 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/data/a5d2d04cc/4ff2284b680f4081a17cb0148be92356/FLAGf1899cbe0 [2023-11-23 21:10:53,672 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/data/a5d2d04cc/4ff2284b680f4081a17cb0148be92356 [2023-11-23 21:10:53,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:10:53,676 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:10:53,678 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:10:53,678 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:10:53,683 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:10:53,684 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:53" (1/1) ... [2023-11-23 21:10:53,685 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d843739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:53, skipping insertion in model container [2023-11-23 21:10:53,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:53" (1/1) ... [2023-11-23 21:10:53,719 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:10:53,867 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_7a2af15e-7162-40b4-a4dd-3c1d3b974594/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.i[912,925] [2023-11-23 21:10:53,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:10:53,949 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:10:53,965 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_7a2af15e-7162-40b4-a4dd-3c1d3b974594/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.i[912,925] [2023-11-23 21:10:54,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:10:54,067 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:10:54,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:54 WrapperNode [2023-11-23 21:10:54,067 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:10:54,070 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:10:54,071 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:10:54,071 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:10:54,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:54" (1/1) ... [2023-11-23 21:10:54,107 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:54" (1/1) ... [2023-11-23 21:10:54,153 INFO L138 Inliner]: procedures = 27, calls = 28, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 119 [2023-11-23 21:10:54,153 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:10:54,154 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:10:54,154 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:10:54,154 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:10:54,168 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:54" (1/1) ... [2023-11-23 21:10:54,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:54" (1/1) ... [2023-11-23 21:10:54,204 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:54" (1/1) ... [2023-11-23 21:10:54,205 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:54" (1/1) ... [2023-11-23 21:10:54,216 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:54" (1/1) ... [2023-11-23 21:10:54,219 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:54" (1/1) ... [2023-11-23 21:10:54,238 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:54" (1/1) ... [2023-11-23 21:10:54,241 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:54" (1/1) ... [2023-11-23 21:10:54,245 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:10:54,246 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:10:54,246 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:10:54,247 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:10:54,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:54" (1/1) ... [2023-11-23 21:10:54,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:10:54,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:54,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:10:54,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:10:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:10:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:10:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:10:54,368 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:10:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:10:54,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:10:54,500 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:10:54,505 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:11:03,645 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:11:03,694 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:11:03,694 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:11:03,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:11:03 BoogieIcfgContainer [2023-11-23 21:11:03,695 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:11:03,697 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:11:03,698 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:11:03,701 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:11:03,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:10:53" (1/3) ... [2023-11-23 21:11:03,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3a1dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:11:03, skipping insertion in model container [2023-11-23 21:11:03,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:54" (2/3) ... [2023-11-23 21:11:03,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3a1dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:11:03, skipping insertion in model container [2023-11-23 21:11:03,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:11:03" (3/3) ... [2023-11-23 21:11:03,704 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_normal_file-3.i [2023-11-23 21:11:03,724 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:11:03,724 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:11:03,789 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:11:03,799 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;@2349474f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:11:03,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:11:03,805 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 21:11:03,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-23 21:11:03,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:11:03,822 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:11:03,823 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:11:03,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:11:03,839 INFO L85 PathProgramCache]: Analyzing trace with hash 879549835, now seen corresponding path program 1 times [2023-11-23 21:11:03,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:11:03,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487753890] [2023-11-23 21:11:03,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:03,858 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 [2023-11-23 21:11:03,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:11:03,864 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:11:03,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:11:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:11:05,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:11:05,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:11:05,491 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-11-23 21:11:05,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:11:05,497 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:11:05,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487753890] [2023-11-23 21:11:05,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487753890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:11:05,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:11:05,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:11:05,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570333073] [2023-11-23 21:11:05,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:11:05,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:11:05,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:11:05,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:11:05,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:11:05,557 INFO L87 Difference]: Start difference. First operand has 54 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 21:11:07,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:07,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:11:07,907 INFO L93 Difference]: Finished difference Result 105 states and 185 transitions. [2023-11-23 21:11:08,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:11:08,025 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 98 [2023-11-23 21:11:08,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:11:08,032 INFO L225 Difference]: With dead ends: 105 [2023-11-23 21:11:08,032 INFO L226 Difference]: Without dead ends: 52 [2023-11-23 21:11:08,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:11:08,039 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:11:08,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2023-11-23 21:11:08,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-23 21:11:08,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-23 21:11:08,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 35 states have internal predecessors, (50), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 21:11:08,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 80 transitions. [2023-11-23 21:11:08,092 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 80 transitions. Word has length 98 [2023-11-23 21:11:08,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:11:08,093 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 80 transitions. [2023-11-23 21:11:08,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 21:11:08,094 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 80 transitions. [2023-11-23 21:11:08,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-23 21:11:08,099 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:11:08,100 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:11:08,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:11:08,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:11:08,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:11:08,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:11:08,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1867586227, now seen corresponding path program 1 times [2023-11-23 21:11:08,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:11:08,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174658186] [2023-11-23 21:11:08,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:08,315 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 [2023-11-23 21:11:08,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:11:08,321 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:11:08,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:11:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:11:09,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:11:09,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:11:11,898 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-23 21:11:11,898 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:11:11,899 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:11:11,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174658186] [2023-11-23 21:11:11,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174658186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:11:11,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:11:11,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:11:11,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804303923] [2023-11-23 21:11:11,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:11:11,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:11:11,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:11:11,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:11:11,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:11:11,905 INFO L87 Difference]: Start difference. First operand 52 states and 80 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, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 21:11:14,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:16,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:18,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:21,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:25,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:27,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:30,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:32,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:34,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:36,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:38,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:38,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:11:38,208 INFO L93 Difference]: Finished difference Result 154 states and 238 transitions. [2023-11-23 21:11:38,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:11:38,209 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, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 98 [2023-11-23 21:11:38,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:11:38,213 INFO L225 Difference]: With dead ends: 154 [2023-11-23 21:11:38,216 INFO L226 Difference]: Without dead ends: 103 [2023-11-23 21:11:38,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:11:38,220 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 46 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:11:38,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 227 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 10 Unknown, 0 Unchecked, 26.2s Time] [2023-11-23 21:11:38,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-23 21:11:38,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2023-11-23 21:11:38,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 68 states have internal predecessors, (95), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-23 21:11:38,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 155 transitions. [2023-11-23 21:11:38,263 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 155 transitions. Word has length 98 [2023-11-23 21:11:38,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:11:38,264 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 155 transitions. [2023-11-23 21:11:38,265 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, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 21:11:38,265 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 155 transitions. [2023-11-23 21:11:38,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-23 21:11:38,270 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:11:38,270 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:11:38,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/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)] Forceful destruction successful, exit code 0 [2023-11-23 21:11:38,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:11:38,483 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:11:38,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:11:38,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1794343179, now seen corresponding path program 1 times [2023-11-23 21:11:38,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:11:38,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290760065] [2023-11-23 21:11:38,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:38,485 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 [2023-11-23 21:11:38,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:11:38,487 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:11:38,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:11:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:11:39,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:11:39,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:11:39,862 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-23 21:11:39,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:11:39,862 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:11:39,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290760065] [2023-11-23 21:11:39,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290760065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:11:39,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:11:39,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:11:39,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727241626] [2023-11-23 21:11:39,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:11:39,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:11:39,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:11:39,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:11:39,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:11:39,865 INFO L87 Difference]: Start difference. First operand 101 states and 155 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, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 21:11:42,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:44,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:46,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:46,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:11:46,546 INFO L93 Difference]: Finished difference Result 239 states and 366 transitions. [2023-11-23 21:11:46,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:11:46,546 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, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 99 [2023-11-23 21:11:46,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:11:46,549 INFO L225 Difference]: With dead ends: 239 [2023-11-23 21:11:46,549 INFO L226 Difference]: Without dead ends: 139 [2023-11-23 21:11:46,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:11:46,553 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 26 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:11:46,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 135 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 3 Unknown, 0 Unchecked, 6.7s Time] [2023-11-23 21:11:46,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-23 21:11:46,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 119. [2023-11-23 21:11:46,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 86 states have (on average 1.3837209302325582) internal successors, (119), 86 states have internal predecessors, (119), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-23 21:11:46,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 179 transitions. [2023-11-23 21:11:46,577 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 179 transitions. Word has length 99 [2023-11-23 21:11:46,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:11:46,578 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 179 transitions. [2023-11-23 21:11:46,578 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, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 21:11:46,578 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 179 transitions. [2023-11-23 21:11:46,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-23 21:11:46,581 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:11:46,581 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:11:46,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/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)] Forceful destruction successful, exit code 0 [2023-11-23 21:11:46,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:11:46,797 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:11:46,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:11:46,797 INFO L85 PathProgramCache]: Analyzing trace with hash 255512308, now seen corresponding path program 1 times [2023-11-23 21:11:46,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:11:46,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657814996] [2023-11-23 21:11:46,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:46,798 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 [2023-11-23 21:11:46,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:11:46,799 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:11:46,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2af15e-7162-40b4-a4dd-3c1d3b974594/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:11:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:11:48,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:11:48,120 INFO L285 TraceCheckSpWp]: Computing forward predicates...