./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.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_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/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_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/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_24c32b13-9ef6-44fb-aa75-06458d4db969/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 087e6cd2d99060c16318d94e67eed026c21e542402823046e52131085ccd5550 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:08:57,756 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:08:57,902 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:08:57,920 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:08:57,921 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:08:57,960 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:08:57,961 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:08:57,962 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:08:57,963 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:08:57,964 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:08:57,965 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:08:57,965 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:08:57,966 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:08:57,967 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:08:57,968 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:08:57,969 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:08:57,970 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:08:57,973 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:08:57,974 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:08:57,975 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:08:57,976 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:08:57,980 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:08:57,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:08:57,982 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:08:57,983 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:08:57,983 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:08:57,984 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:08:57,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:08:57,985 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:08:57,986 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:08:57,987 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:08:57,988 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:08:57,988 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:08:57,988 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:08:57,989 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:08:57,989 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:08:57,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:08:57,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:57,991 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:08:57,991 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:08:57,992 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:08:57,992 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:08:57,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:08:57,993 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:08:57,994 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:08:57,994 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:08:57,994 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:08:57,994 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_24c32b13-9ef6-44fb-aa75-06458d4db969/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 087e6cd2d99060c16318d94e67eed026c21e542402823046e52131085ccd5550 [2023-11-23 21:08:58,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:08:58,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:08:58,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:08:58,510 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:08:58,511 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:08:58,513 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.i [2023-11-23 21:09:02,213 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:09:02,430 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:09:02,431 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.i [2023-11-23 21:09:02,440 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/data/b4a374181/74fe4d7533b9464d8008abb216a5dd2f/FLAGcade3f821 [2023-11-23 21:09:02,454 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/data/b4a374181/74fe4d7533b9464d8008abb216a5dd2f [2023-11-23 21:09:02,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:09:02,458 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:09:02,459 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:09:02,460 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:09:02,465 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:09:02,466 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:02" (1/1) ... [2023-11-23 21:09:02,467 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79e98d91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:02, skipping insertion in model container [2023-11-23 21:09:02,468 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:02" (1/1) ... [2023-11-23 21:09:02,499 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:09:02,725 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_24c32b13-9ef6-44fb-aa75-06458d4db969/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.i[915,928] [2023-11-23 21:09:02,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:09:02,810 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:09:02,829 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_24c32b13-9ef6-44fb-aa75-06458d4db969/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.i[915,928] [2023-11-23 21:09:02,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:09:02,867 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:09:02,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:02 WrapperNode [2023-11-23 21:09:02,868 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:09:02,869 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:09:02,870 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:09:02,870 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:09:02,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:02" (1/1) ... [2023-11-23 21:09:02,888 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:02" (1/1) ... [2023-11-23 21:09:02,933 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 108 [2023-11-23 21:09:02,936 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:09:02,937 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:09:02,937 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:09:02,937 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:09:02,945 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:02" (1/1) ... [2023-11-23 21:09:02,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:02" (1/1) ... [2023-11-23 21:09:02,948 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:02" (1/1) ... [2023-11-23 21:09:02,948 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:02" (1/1) ... [2023-11-23 21:09:02,956 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:02" (1/1) ... [2023-11-23 21:09:02,959 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:02" (1/1) ... [2023-11-23 21:09:02,961 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:02" (1/1) ... [2023-11-23 21:09:02,963 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:02" (1/1) ... [2023-11-23 21:09:02,966 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:09:02,967 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:09:02,967 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:09:02,967 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:09:02,968 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:02" (1/1) ... [2023-11-23 21:09:02,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:09:02,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:03,011 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:09:03,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:09:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:09:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:09:03,063 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:09:03,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:09:03,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:09:03,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:09:03,206 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:09:03,208 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:09:03,468 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:09:03,668 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:09:03,668 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:09:03,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:03 BoogieIcfgContainer [2023-11-23 21:09:03,671 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:09:03,674 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:09:03,674 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:09:03,678 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:09:03,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:09:02" (1/3) ... [2023-11-23 21:09:03,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cea622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:03, skipping insertion in model container [2023-11-23 21:09:03,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:02" (2/3) ... [2023-11-23 21:09:03,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cea622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:03, skipping insertion in model container [2023-11-23 21:09:03,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:03" (3/3) ... [2023-11-23 21:09:03,682 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-79.i [2023-11-23 21:09:03,703 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:09:03,703 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:09:03,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:09:03,765 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;@4e23a249, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:09:03,765 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:09:03,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:09:03,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-23 21:09:03,782 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:03,783 INFO L195 NwaCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:03,783 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:03,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:03,789 INFO L85 PathProgramCache]: Analyzing trace with hash 233774878, now seen corresponding path program 1 times [2023-11-23 21:09:03,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:03,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352004872] [2023-11-23 21:09:03,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:03,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:09:04,055 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:09:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:09:04,215 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:09:04,218 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:09:04,219 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:09:04,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:09:04,228 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:09:04,242 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:09:04,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:09:04 BoogieIcfgContainer [2023-11-23 21:09:04,315 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:09:04,316 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:09:04,316 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:09:04,316 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:09:04,317 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:03" (3/4) ... [2023-11-23 21:09:04,320 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:09:04,321 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:09:04,323 INFO L158 Benchmark]: Toolchain (without parser) took 1864.65ms. Allocated memory is still 157.3MB. Free memory was 121.1MB in the beginning and 73.1MB in the end (delta: 48.0MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. [2023-11-23 21:09:04,324 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 115.3MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:09:04,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 409.18ms. Allocated memory is still 157.3MB. Free memory was 121.1MB in the beginning and 125.1MB in the end (delta: -4.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-23 21:09:04,325 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.18ms. Allocated memory is still 157.3MB. Free memory was 125.1MB in the beginning and 123.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:09:04,326 INFO L158 Benchmark]: Boogie Preprocessor took 29.08ms. Allocated memory is still 157.3MB. Free memory was 123.0MB in the beginning and 121.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:09:04,327 INFO L158 Benchmark]: RCFGBuilder took 703.59ms. Allocated memory is still 157.3MB. Free memory was 121.4MB in the beginning and 99.9MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 21:09:04,328 INFO L158 Benchmark]: TraceAbstraction took 641.38ms. Allocated memory is still 157.3MB. Free memory was 99.5MB in the beginning and 73.6MB in the end (delta: 25.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-23 21:09:04,329 INFO L158 Benchmark]: Witness Printer took 5.90ms. Allocated memory is still 157.3MB. Free memory was 73.6MB in the beginning and 73.1MB in the end (delta: 447.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:09:04,333 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 115.3MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 409.18ms. Allocated memory is still 157.3MB. Free memory was 121.1MB in the beginning and 125.1MB in the end (delta: -4.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.18ms. Allocated memory is still 157.3MB. Free memory was 125.1MB in the beginning and 123.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.08ms. Allocated memory is still 157.3MB. Free memory was 123.0MB in the beginning and 121.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 703.59ms. Allocated memory is still 157.3MB. Free memory was 121.4MB in the beginning and 99.9MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 641.38ms. Allocated memory is still 157.3MB. Free memory was 99.5MB in the beginning and 73.6MB in the end (delta: 25.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 5.90ms. Allocated memory is still 157.3MB. Free memory was 73.6MB in the beginning and 73.1MB in the end (delta: 447.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryDOUBLEComparisonOperation at line 45, overapproximation of someBinaryArithmeticDOUBLEoperation at line 46. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed char var_1_1 = -16; [L23] unsigned char var_1_2 = 1; [L24] signed char var_1_3 = 0; [L25] signed char var_1_4 = 64; [L26] signed char var_1_5 = 64; [L27] unsigned short int var_1_6 = 25; [L28] float var_1_7 = 256.4; [L29] double var_1_10 = 9999999999.515; [L30] float var_1_11 = 8.5; [L31] float var_1_12 = 2.5; [L32] double var_1_13 = 15.8; [L33] double var_1_14 = 25.8; [L94] isInitial = 1 [L95] FCALL initially() [L96] int k_loop; [L97] k_loop = 0 VAL [isInitial=1, k_loop=0, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=0, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L97] COND TRUE k_loop < 1 [L98] FCALL updateLastVariables() [L99] CALL updateVariables() [L64] var_1_2 = __VERIFIER_nondet_uchar() [L65] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_3=0, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_3=0, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L66] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=0, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=0, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L67] var_1_3 = __VERIFIER_nondet_char() [L68] CALL assume_abort_if_not(var_1_3 >= -63) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_3 >= -63) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L69] CALL assume_abort_if_not(var_1_3 <= 63) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_3 <= 63) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L70] var_1_4 = __VERIFIER_nondet_char() [L71] CALL assume_abort_if_not(var_1_4 >= -1) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=-1, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_4 >= -1) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=-1, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L72] CALL assume_abort_if_not(var_1_4 <= 126) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=-1, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not(var_1_4 <= 126) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=-1, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L73] var_1_5 = __VERIFIER_nondet_char() [L74] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=-1, var_1_5=0, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=-1, var_1_5=0, var_1_6=25, var_1_7=1282/5] [L75] CALL assume_abort_if_not(var_1_5 <= 126) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=-1, var_1_5=0, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_5 <= 126) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=-1, var_1_5=0, var_1_6=25, var_1_7=1282/5] [L76] var_1_7 = __VERIFIER_nondet_float() [L77] CALL assume_abort_if_not((var_1_7 >= 0.0F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854776000e+12F && var_1_7 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=-1, var_1_5=0, var_1_6=25] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not((var_1_7 >= 0.0F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854776000e+12F && var_1_7 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=-1, var_1_5=0, var_1_6=25] [L78] var_1_11 = __VERIFIER_nondet_float() [L79] CALL assume_abort_if_not((var_1_11 >= 0.0F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854776000e+12F && var_1_11 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=-1, var_1_5=0, var_1_6=25] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not((var_1_11 >= 0.0F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854776000e+12F && var_1_11 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=-1, var_1_5=0, var_1_6=25] [L80] var_1_12 = __VERIFIER_nondet_float() [L81] CALL assume_abort_if_not((var_1_12 >= 0.0F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 9223372.036854776000e+12F && var_1_12 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=-1, var_1_5=0, var_1_6=25] [L20] COND FALSE !(!cond) [L81] RET assume_abort_if_not((var_1_12 >= 0.0F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 9223372.036854776000e+12F && var_1_12 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=-1, var_1_5=0, var_1_6=25] [L82] var_1_13 = __VERIFIER_nondet_double() [L83] CALL assume_abort_if_not((var_1_13 >= 0.0F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854765600e+12F && var_1_13 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=-1, var_1_5=0, var_1_6=25] [L20] COND FALSE !(!cond) [L83] RET assume_abort_if_not((var_1_13 >= 0.0F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854765600e+12F && var_1_13 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_14=129/5, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=-1, var_1_5=0, var_1_6=25] [L84] var_1_14 = __VERIFIER_nondet_double() [L85] CALL assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854765600e+12F && var_1_14 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=-1, var_1_5=0, var_1_6=25] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854765600e+12F && var_1_14 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_1=-16, var_1_2=0, var_1_3=63, var_1_4=-1, var_1_5=0, var_1_6=25] [L99] RET updateVariables() [L100] CALL step() [L37] COND TRUE ! var_1_2 [L38] COND TRUE ! var_1_2 [L39] var_1_1 = (var_1_3 + -32) [L44] COND FALSE !(var_1_7 < (var_1_11 - var_1_12)) [L51] var_1_10 = var_1_14 [L53] COND FALSE !(\read(var_1_2)) [L60] var_1_6 = 16 [L100] RET step() [L101] CALL, EXPR property() [L90-L91] return (((! var_1_2) ? ((! var_1_2) ? (var_1_1 == ((signed char) (var_1_3 + -32))) : (var_1_1 == ((signed char) (var_1_4 - var_1_5)))) : 1) && (var_1_2 ? (((var_1_7 - ((((var_1_10) < 0 ) ? -(var_1_10) : (var_1_10)))) <= var_1_10) ? (var_1_6 == ((unsigned short int) ((((256) < 0 ) ? -(256) : (256))))) : (var_1_6 == ((unsigned short int) var_1_5))) : (var_1_6 == ((unsigned short int) 16)))) && ((var_1_7 < (var_1_11 - var_1_12)) ? (((var_1_7 / 7.2) <= var_1_11) ? (var_1_10 == ((double) (var_1_13 - var_1_14))) : (var_1_10 == ((double) var_1_13))) : (var_1_10 == ((double) var_1_14))) ; [L101] RET, EXPR property() [L101] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=10000000004, var_1_13=10000000004, var_1_14=10000000004, var_1_1=31, var_1_2=0, var_1_3=63, var_1_4=-1, var_1_5=0, var_1_6=16] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=10000000004, var_1_13=10000000004, var_1_14=10000000004, var_1_1=31, var_1_2=0, var_1_3=63, var_1_4=-1, var_1_5=0, var_1_6=16] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 13, 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=31occurred 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, 52 NumberOfCodeBlocks, 52 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 21:09:04,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/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_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/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_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/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_24c32b13-9ef6-44fb-aa75-06458d4db969/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 087e6cd2d99060c16318d94e67eed026c21e542402823046e52131085ccd5550 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:09:07,417 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:09:07,547 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:09:07,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:09:07,565 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:09:07,613 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:09:07,614 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:09:07,614 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:09:07,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:09:07,620 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:09:07,621 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:09:07,621 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:09:07,622 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:09:07,624 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:09:07,624 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:09:07,624 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:09:07,626 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:09:07,626 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:09:07,626 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:09:07,628 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:09:07,628 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:09:07,628 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:09:07,629 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:09:07,629 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:09:07,630 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:09:07,630 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:09:07,630 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:09:07,631 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:09:07,631 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:09:07,632 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:09:07,633 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:09:07,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:09:07,634 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:09:07,634 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:09:07,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:09:07,635 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:09:07,635 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:09:07,635 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:09:07,636 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:09:07,637 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:09:07,637 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:09:07,637 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:09:07,638 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:09:07,638 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:09:07,638 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_24c32b13-9ef6-44fb-aa75-06458d4db969/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 087e6cd2d99060c16318d94e67eed026c21e542402823046e52131085ccd5550 [2023-11-23 21:09:08,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:09:08,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:09:08,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:09:08,091 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:09:08,091 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:09:08,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.i [2023-11-23 21:09:11,411 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:09:11,738 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:09:11,739 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.i [2023-11-23 21:09:11,749 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/data/b34f835bf/fd2e3cd68fa242dba31e4806e6032faa/FLAGdc9a3db4a [2023-11-23 21:09:11,764 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/data/b34f835bf/fd2e3cd68fa242dba31e4806e6032faa [2023-11-23 21:09:11,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:09:11,769 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:09:11,771 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:09:11,771 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:09:11,777 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:09:11,778 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:11" (1/1) ... [2023-11-23 21:09:11,779 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c64c777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:11, skipping insertion in model container [2023-11-23 21:09:11,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:11" (1/1) ... [2023-11-23 21:09:11,807 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:09:12,037 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_24c32b13-9ef6-44fb-aa75-06458d4db969/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.i[915,928] [2023-11-23 21:09:12,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:09:12,133 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:09:12,157 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_24c32b13-9ef6-44fb-aa75-06458d4db969/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.i[915,928] [2023-11-23 21:09:12,193 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:09:12,214 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:09:12,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12 WrapperNode [2023-11-23 21:09:12,215 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:09:12,216 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:09:12,216 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:09:12,216 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:09:12,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,249 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,296 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 105 [2023-11-23 21:09:12,299 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:09:12,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:09:12,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:09:12,301 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:09:12,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,330 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,331 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,349 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,364 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,379 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:09:12,384 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:09:12,391 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:09:12,392 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:09:12,393 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:09:12,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:12,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:09:12,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:09:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:09:12,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:09:12,482 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:09:12,482 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:09:12,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:09:12,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:09:12,581 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:09:12,584 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:09:20,752 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:09:20,804 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:09:20,805 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:09:20,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:20 BoogieIcfgContainer [2023-11-23 21:09:20,808 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:09:20,811 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:09:20,811 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:09:20,819 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:09:20,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:09:11" (1/3) ... [2023-11-23 21:09:20,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ccc10bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:20, skipping insertion in model container [2023-11-23 21:09:20,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12" (2/3) ... [2023-11-23 21:09:20,821 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ccc10bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:20, skipping insertion in model container [2023-11-23 21:09:20,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:20" (3/3) ... [2023-11-23 21:09:20,822 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-79.i [2023-11-23 21:09:20,839 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:09:20,840 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:09:20,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:09:20,897 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;@7dc778e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:09:20,897 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:09:20,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:09:20,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-23 21:09:20,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:20,914 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:20,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:20,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:20,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1737405670, now seen corresponding path program 1 times [2023-11-23 21:09:20,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:09:20,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501811071] [2023-11-23 21:09:20,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:20,936 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 21:09:20,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:09:20,940 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/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 21:09:20,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/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 21:09:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:22,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:09:22,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-11-23 21:09:22,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:09:22,144 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:09:22,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501811071] [2023-11-23 21:09:22,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501811071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:22,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:22,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:09:22,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661807694] [2023-11-23 21:09:22,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:22,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:09:22,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:09:22,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:09:22,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:09:22,192 INFO L87 Difference]: Start difference. First operand has 41 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 21:09:24,556 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 21:09:24,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:24,674 INFO L93 Difference]: Finished difference Result 81 states and 136 transitions. [2023-11-23 21:09:24,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:09:24,678 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 82 [2023-11-23 21:09:24,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:24,686 INFO L225 Difference]: With dead ends: 81 [2023-11-23 21:09:24,686 INFO L226 Difference]: Without dead ends: 39 [2023-11-23 21:09:24,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 81 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 21:09:24,693 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:24,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2023-11-23 21:09:24,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-23 21:09:24,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-23 21:09:24,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:09:24,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 57 transitions. [2023-11-23 21:09:24,740 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 57 transitions. Word has length 82 [2023-11-23 21:09:24,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:24,741 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 57 transitions. [2023-11-23 21:09:24,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 21:09:24,742 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 57 transitions. [2023-11-23 21:09:24,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-23 21:09:24,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:24,747 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:24,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/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 21:09:24,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/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 21:09:24,949 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:24,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:24,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1991446756, now seen corresponding path program 1 times [2023-11-23 21:09:24,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:09:24,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932163623] [2023-11-23 21:09:24,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:24,952 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 21:09:24,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:09:24,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/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 21:09:24,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/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 21:09:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:26,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:09:26,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-23 21:09:26,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:09:26,343 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:09:26,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932163623] [2023-11-23 21:09:26,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932163623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:26,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:26,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:09:26,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461657406] [2023-11-23 21:09:26,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:26,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:26,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:09:26,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:26,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:26,349 INFO L87 Difference]: Start difference. First operand 39 states and 57 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-23 21:09:28,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:09:30,816 WARN L539 Checker$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 21:09:32,828 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 21:09:32,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:32,948 INFO L93 Difference]: Finished difference Result 86 states and 125 transitions. [2023-11-23 21:09:32,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:32,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 82 [2023-11-23 21:09:32,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:32,952 INFO L225 Difference]: With dead ends: 86 [2023-11-23 21:09:32,952 INFO L226 Difference]: Without dead ends: 48 [2023-11-23 21:09:32,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:32,955 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:32,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 95 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 3 Unknown, 0 Unchecked, 6.6s Time] [2023-11-23 21:09:32,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-23 21:09:32,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2023-11-23 21:09:32,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:09:32,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 62 transitions. [2023-11-23 21:09:32,968 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 62 transitions. Word has length 82 [2023-11-23 21:09:32,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:32,970 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 62 transitions. [2023-11-23 21:09:32,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-23 21:09:32,970 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 62 transitions. [2023-11-23 21:09:32,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-23 21:09:32,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:32,973 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:32,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/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 21:09:33,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/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 21:09:33,194 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:33,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:33,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1614667413, now seen corresponding path program 1 times [2023-11-23 21:09:33,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:09:33,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261349970] [2023-11-23 21:09:33,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:33,196 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 21:09:33,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:09:33,198 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/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 21:09:33,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c32b13-9ef6-44fb-aa75-06458d4db969/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 21:09:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:34,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 21:09:34,383 INFO L285 TraceCheckSpWp]: Computing forward predicates...