./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.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_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/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_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/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_f44245da-a751-42a7-b31d-fb94e488873d/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 0c9ac74b48c7165afb9f2b624d9d9a4575a37c69f2655e95ac9683bba5876265 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:15:01,678 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:15:01,847 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:15:01,853 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:15:01,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:15:01,886 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:15:01,886 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:15:01,887 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:15:01,888 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:15:01,894 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:15:01,894 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:15:01,895 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:15:01,896 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:15:01,898 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:15:01,898 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:15:01,899 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:15:01,899 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:15:01,900 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:15:01,901 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:15:01,901 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:15:01,901 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:15:01,902 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:15:01,903 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:15:01,903 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:15:01,904 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:15:01,904 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:15:01,904 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:15:01,905 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:15:01,905 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:15:01,905 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:15:01,907 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:15:01,907 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:15:01,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:15:01,907 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:15:01,908 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:15:01,908 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:15:01,908 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:15:01,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:01,909 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:15:01,909 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:15:01,909 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:15:01,909 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:15:01,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:15:01,910 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:15:01,910 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:15:01,911 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:15:01,911 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:15:01,911 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_f44245da-a751-42a7-b31d-fb94e488873d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c9ac74b48c7165afb9f2b624d9d9a4575a37c69f2655e95ac9683bba5876265 [2023-11-23 21:15:02,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:15:02,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:15:02,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:15:02,281 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:15:02,282 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:15:02,284 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.i [2023-11-23 21:15:05,450 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:15:05,676 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:15:05,677 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.i [2023-11-23 21:15:05,686 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/data/e207bf3c6/a46cae25270a46ea9952c49798ea0f18/FLAG18887d91f [2023-11-23 21:15:05,703 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/data/e207bf3c6/a46cae25270a46ea9952c49798ea0f18 [2023-11-23 21:15:05,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:15:05,707 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:15:05,709 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:05,709 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:15:05,715 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:15:05,716 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:05" (1/1) ... [2023-11-23 21:15:05,717 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ff1bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:05, skipping insertion in model container [2023-11-23 21:15:05,717 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:05" (1/1) ... [2023-11-23 21:15:05,754 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:15:05,914 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_f44245da-a751-42a7-b31d-fb94e488873d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.i[915,928] [2023-11-23 21:15:05,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:05,978 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:15:05,990 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_f44245da-a751-42a7-b31d-fb94e488873d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.i[915,928] [2023-11-23 21:15:06,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:06,030 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:15:06,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:06 WrapperNode [2023-11-23 21:15:06,031 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:06,032 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:06,032 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:15:06,032 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:15:06,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:06" (1/1) ... [2023-11-23 21:15:06,049 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:06" (1/1) ... [2023-11-23 21:15:06,094 INFO L138 Inliner]: procedures = 26, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 92 [2023-11-23 21:15:06,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:06,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:15:06,096 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:15:06,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:15:06,106 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:06" (1/1) ... [2023-11-23 21:15:06,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:06" (1/1) ... [2023-11-23 21:15:06,110 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:06" (1/1) ... [2023-11-23 21:15:06,110 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:06" (1/1) ... [2023-11-23 21:15:06,117 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:06" (1/1) ... [2023-11-23 21:15:06,121 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:06" (1/1) ... [2023-11-23 21:15:06,123 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:06" (1/1) ... [2023-11-23 21:15:06,124 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:06" (1/1) ... [2023-11-23 21:15:06,128 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:15:06,129 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:15:06,129 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:15:06,130 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:15:06,130 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:06" (1/1) ... [2023-11-23 21:15:06,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:06,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:06,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:15:06,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:15:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:15:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:15:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:15:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:15:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:15:06,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:15:06,288 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:15:06,290 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:15:06,536 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:15:06,734 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:15:06,734 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:15:06,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:06 BoogieIcfgContainer [2023-11-23 21:15:06,736 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:15:06,761 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:15:06,761 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:15:06,765 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:15:06,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:15:05" (1/3) ... [2023-11-23 21:15:06,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc787c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:06, skipping insertion in model container [2023-11-23 21:15:06,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:06" (2/3) ... [2023-11-23 21:15:06,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc787c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:06, skipping insertion in model container [2023-11-23 21:15:06,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:06" (3/3) ... [2023-11-23 21:15:06,768 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-30.i [2023-11-23 21:15:06,791 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:15:06,792 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:15:06,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:15:06,851 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;@6aa43bb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:15:06,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:15:06,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-23 21:15:06,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-23 21:15:06,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:06,865 INFO L195 NwaCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 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 21:15:06,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:06,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:06,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1038826005, now seen corresponding path program 1 times [2023-11-23 21:15:06,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:06,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402785090] [2023-11-23 21:15:06,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:06,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:06,999 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:15:06,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891912189] [2023-11-23 21:15:07,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:07,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:07,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:07,005 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:15:07,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:15:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:15:07,174 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:15:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:15:07,298 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:15:07,301 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:15:07,303 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:15:07,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:07,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:15:07,516 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:15:07,520 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:15:07,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:15:07 BoogieIcfgContainer [2023-11-23 21:15:07,575 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:15:07,575 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:15:07,575 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:15:07,576 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:15:07,576 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:06" (3/4) ... [2023-11-23 21:15:07,578 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:15:07,579 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:15:07,580 INFO L158 Benchmark]: Toolchain (without parser) took 1873.22ms. Allocated memory is still 153.1MB. Free memory was 119.8MB in the beginning and 94.9MB in the end (delta: 24.9MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2023-11-23 21:15:07,581 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 109.1MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:15:07,581 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.89ms. Allocated memory is still 153.1MB. Free memory was 119.8MB in the beginning and 107.8MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:15:07,582 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.85ms. Allocated memory is still 153.1MB. Free memory was 107.8MB in the beginning and 105.1MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:15:07,583 INFO L158 Benchmark]: Boogie Preprocessor took 32.53ms. Allocated memory is still 153.1MB. Free memory was 105.1MB in the beginning and 103.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:15:07,583 INFO L158 Benchmark]: RCFGBuilder took 607.11ms. Allocated memory is still 153.1MB. Free memory was 103.9MB in the beginning and 122.2MB in the end (delta: -18.3MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2023-11-23 21:15:07,584 INFO L158 Benchmark]: TraceAbstraction took 813.95ms. Allocated memory is still 153.1MB. Free memory was 120.8MB in the beginning and 95.9MB in the end (delta: 24.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-23 21:15:07,585 INFO L158 Benchmark]: Witness Printer took 4.02ms. Allocated memory is still 153.1MB. Free memory was 95.9MB in the beginning and 94.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:15:07,588 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 109.1MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.89ms. Allocated memory is still 153.1MB. Free memory was 119.8MB in the beginning and 107.8MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.85ms. Allocated memory is still 153.1MB. Free memory was 107.8MB in the beginning and 105.1MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.53ms. Allocated memory is still 153.1MB. Free memory was 105.1MB in the beginning and 103.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 607.11ms. Allocated memory is still 153.1MB. Free memory was 103.9MB in the beginning and 122.2MB in the end (delta: -18.3MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. * TraceAbstraction took 813.95ms. Allocated memory is still 153.1MB. Free memory was 120.8MB in the beginning and 95.9MB in the end (delta: 24.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 4.02ms. Allocated memory is still 153.1MB. Free memory was 95.9MB in the beginning and 94.9MB in the end (delta: 1.0MB). 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 82. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 64; [L23] unsigned char var_1_2 = 0; [L24] signed short int var_1_5 = 8; [L25] signed short int var_1_6 = -32; [L26] unsigned char var_1_7 = 100; [L27] signed long int var_1_8 = 32; [L28] float var_1_10 = 255.3; [L29] float var_1_13 = 2.8; [L30] signed long int last_1_var_1_8 = 32; [L86] isInitial = 1 [L87] FCALL initially() [L88] int k_loop; [L89] k_loop = 0 VAL [isInitial=1, k_loop=0, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=0, var_1_5=8, var_1_6=-32, var_1_7=100, var_1_8=32] [L89] COND TRUE k_loop < 1 [L90] CALL updateLastVariables() [L79] last_1_var_1_8 = var_1_8 [L90] RET updateLastVariables() [L91] CALL updateVariables() [L61] var_1_2 = __VERIFIER_nondet_uchar() [L62] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_5=8, var_1_6=-32, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) [L62] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_5=8, var_1_6=-32, var_1_7=100, var_1_8=32] [L63] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=8, var_1_6=-32, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) [L63] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=8, var_1_6=-32, var_1_7=100, var_1_8=32] [L64] var_1_5 = __VERIFIER_nondet_short() [L65] CALL assume_abort_if_not(var_1_5 >= -32768) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=1, var_1_6=-32, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not(var_1_5 >= -32768) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=1, var_1_6=-32, var_1_7=100, var_1_8=32] [L66] CALL assume_abort_if_not(var_1_5 <= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=1, var_1_6=-32, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_5 <= 32767) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=1, var_1_6=-32, var_1_7=100, var_1_8=32] [L67] CALL assume_abort_if_not(var_1_5 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=1, var_1_6=-32, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not(var_1_5 != 0) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=1, var_1_6=-32, var_1_7=100, var_1_8=32] [L68] var_1_6 = __VERIFIER_nondet_short() [L69] CALL assume_abort_if_not(var_1_6 >= -32768) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=1, var_1_6=33, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_6 >= -32768) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=1, var_1_6=33, var_1_7=100, var_1_8=32] [L70] CALL assume_abort_if_not(var_1_6 <= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=1, var_1_6=33, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_6 <= 32767) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=1, var_1_6=33, var_1_7=100, var_1_8=32] [L71] CALL assume_abort_if_not(var_1_6 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=1, var_1_6=33, var_1_7=100, var_1_8=32] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_6 != 0) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=1, var_1_6=33, var_1_7=100, var_1_8=32] [L72] var_1_7 = __VERIFIER_nondet_uchar() [L73] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=1, var_1_6=33, var_1_8=32] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=1, var_1_6=33, var_1_8=32] [L74] CALL assume_abort_if_not(var_1_7 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=1, var_1_6=33, var_1_7=65, var_1_8=32] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_7 <= 254) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_13=14/5, var_1_1=64, var_1_2=1, var_1_5=1, var_1_6=33, var_1_7=65, var_1_8=32] [L75] var_1_13 = __VERIFIER_nondet_float() [L76] CALL assume_abort_if_not((var_1_13 >= -922337.2036854765600e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854765600e+12F && var_1_13 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_1=64, var_1_2=1, var_1_5=1, var_1_6=33, var_1_7=65, var_1_8=32] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not((var_1_13 >= -922337.2036854765600e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854765600e+12F && var_1_13 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_8=32, var_1_10=2553/10, var_1_1=64, var_1_2=1, var_1_5=1, var_1_6=33, var_1_7=65, var_1_8=32] [L91] RET updateVariables() [L92] CALL step() [L34] signed long int stepLocal_0 = (last_1_var_1_8 / var_1_5) % var_1_6; [L35] COND TRUE \read(var_1_2) [L36] COND FALSE !(last_1_var_1_8 > stepLocal_0) [L42] unsigned char stepLocal_1 = var_1_1; [L43] COND FALSE !(stepLocal_1 < var_1_5) [L46] var_1_8 = var_1_7 [L48] COND FALSE !(((var_1_6 * var_1_8) * var_1_7) <= (var_1_8 - var_1_1)) [L53] COND TRUE var_1_1 >= var_1_1 [L54] var_1_10 = var_1_13 [L92] RET step() [L93] CALL, EXPR property() [L82-L83] return ((var_1_2 ? ((last_1_var_1_8 > ((last_1_var_1_8 / var_1_5) % var_1_6)) ? (var_1_1 == ((unsigned char) var_1_7)) : 1) : (var_1_1 == ((unsigned char) var_1_7))) && ((var_1_1 < var_1_5) ? (var_1_8 == ((signed long int) (var_1_1 - ((((var_1_7) < (var_1_1)) ? (var_1_7) : (var_1_1)))))) : (var_1_8 == ((signed long int) var_1_7)))) && ((((var_1_6 * var_1_8) * var_1_7) <= (var_1_8 - var_1_1)) ? ((var_1_5 <= (var_1_8 + var_1_8)) ? (var_1_10 == ((float) var_1_13)) : 1) : ((var_1_1 >= var_1_1) ? (var_1_10 == ((float) var_1_13)) : (var_1_10 == ((float) var_1_13)))) ; [L93] RET, EXPR property() [L93] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_8=32, var_1_10=2, var_1_13=2, var_1_1=64, var_1_2=1, var_1_5=1, var_1_6=33, var_1_7=65, var_1_8=65] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_8=32, var_1_10=2, var_1_13=2, var_1_1=64, var_1_2=1, var_1_5=1, var_1_6=33, var_1_7=65, var_1_8=65] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 11, 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=25occurred 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, 42 NumberOfCodeBlocks, 42 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 21:15:07,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/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_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/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_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/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_f44245da-a751-42a7-b31d-fb94e488873d/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 0c9ac74b48c7165afb9f2b624d9d9a4575a37c69f2655e95ac9683bba5876265 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:15:10,443 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:15:10,555 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:15:10,565 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:15:10,566 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:15:10,615 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:15:10,616 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:15:10,617 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:15:10,618 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:15:10,619 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:15:10,620 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:15:10,621 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:15:10,622 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:15:10,622 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:15:10,623 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:15:10,624 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:15:10,625 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:15:10,626 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:15:10,626 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:15:10,627 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:15:10,627 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:15:10,628 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:15:10,629 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:15:10,629 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:15:10,630 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:15:10,630 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:15:10,631 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:15:10,631 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:15:10,632 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:15:10,632 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:15:10,633 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:15:10,634 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:15:10,634 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:15:10,635 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:15:10,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:10,636 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:15:10,637 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:15:10,637 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:15:10,638 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:15:10,638 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:15:10,639 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:15:10,644 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:15:10,645 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:15:10,645 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:15:10,645 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_f44245da-a751-42a7-b31d-fb94e488873d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c9ac74b48c7165afb9f2b624d9d9a4575a37c69f2655e95ac9683bba5876265 [2023-11-23 21:15:11,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:15:11,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:15:11,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:15:11,061 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:15:11,062 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:15:11,063 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.i [2023-11-23 21:15:14,196 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:15:14,511 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:15:14,511 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.i [2023-11-23 21:15:14,527 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/data/e7c365acd/37578cf9c5a64e76a3f1f06b985c39b9/FLAG652b65ecb [2023-11-23 21:15:14,547 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/data/e7c365acd/37578cf9c5a64e76a3f1f06b985c39b9 [2023-11-23 21:15:14,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:15:14,557 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:15:14,561 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:14,561 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:15:14,567 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:15:14,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:14" (1/1) ... [2023-11-23 21:15:14,569 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605170c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:14, skipping insertion in model container [2023-11-23 21:15:14,569 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:14" (1/1) ... [2023-11-23 21:15:14,610 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:15:14,822 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_f44245da-a751-42a7-b31d-fb94e488873d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.i[915,928] [2023-11-23 21:15:14,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:14,919 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:15:14,939 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_f44245da-a751-42a7-b31d-fb94e488873d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-30.i[915,928] [2023-11-23 21:15:14,971 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:14,998 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:15:14,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:14 WrapperNode [2023-11-23 21:15:14,999 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:15,001 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:15,001 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:15:15,001 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:15:15,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:14" (1/1) ... [2023-11-23 21:15:15,037 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:14" (1/1) ... [2023-11-23 21:15:15,080 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 90 [2023-11-23 21:15:15,080 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:15,081 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:15:15,081 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:15:15,081 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:15:15,095 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:14" (1/1) ... [2023-11-23 21:15:15,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:14" (1/1) ... [2023-11-23 21:15:15,107 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:14" (1/1) ... [2023-11-23 21:15:15,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:14" (1/1) ... [2023-11-23 21:15:15,130 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:14" (1/1) ... [2023-11-23 21:15:15,134 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:14" (1/1) ... [2023-11-23 21:15:15,136 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:14" (1/1) ... [2023-11-23 21:15:15,138 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:14" (1/1) ... [2023-11-23 21:15:15,153 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:15:15,154 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:15:15,154 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:15:15,154 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:15:15,155 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:14" (1/1) ... [2023-11-23 21:15:15,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:15,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:15,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:15:15,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:15:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:15:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:15:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:15:15,280 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:15:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:15:15,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:15:15,363 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:15:15,366 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:15:15,842 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:15:15,884 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:15:15,884 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:15:15,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:15 BoogieIcfgContainer [2023-11-23 21:15:15,885 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:15:15,887 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:15:15,887 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:15:15,891 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:15:15,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:15:14" (1/3) ... [2023-11-23 21:15:15,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340747d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:15, skipping insertion in model container [2023-11-23 21:15:15,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:14" (2/3) ... [2023-11-23 21:15:15,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340747d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:15, skipping insertion in model container [2023-11-23 21:15:15,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:15" (3/3) ... [2023-11-23 21:15:15,894 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-30.i [2023-11-23 21:15:15,914 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:15:15,915 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:15:15,965 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:15:15,972 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;@3b0689b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:15:15,972 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:15:15,976 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-23 21:15:15,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-23 21:15:15,988 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:15,988 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:15:15,989 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:15,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:15,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1149641420, now seen corresponding path program 1 times [2023-11-23 21:15:16,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:15:16,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976705641] [2023-11-23 21:15:16,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:16,015 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 21:15:16,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:15:16,020 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/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 21:15:16,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/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 21:15:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:16,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 21:15:16,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-23 21:15:23,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:23,959 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:15:23,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976705641] [2023-11-23 21:15:23,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976705641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:23,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:23,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 21:15:23,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070560057] [2023-11-23 21:15:23,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:23,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 21:15:23,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:15:23,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 21:15:23,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:15:23,998 INFO L87 Difference]: Start difference. First operand has 36 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 21:15:29,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:29,773 INFO L93 Difference]: Finished difference Result 107 states and 170 transitions. [2023-11-23 21:15:29,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 21:15:29,775 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 70 [2023-11-23 21:15:29,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:29,783 INFO L225 Difference]: With dead ends: 107 [2023-11-23 21:15:29,784 INFO L226 Difference]: Without dead ends: 64 [2023-11-23 21:15:29,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2023-11-23 21:15:29,791 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 138 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:29,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 112 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-23 21:15:29,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-23 21:15:29,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 44. [2023-11-23 21:15:29,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-23 21:15:29,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2023-11-23 21:15:29,836 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 70 [2023-11-23 21:15:29,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:29,837 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2023-11-23 21:15:29,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 21:15:29,838 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2023-11-23 21:15:29,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-23 21:15:29,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:29,842 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:15:29,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/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)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:30,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/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 21:15:30,048 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:30,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:30,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1142014924, now seen corresponding path program 1 times [2023-11-23 21:15:30,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:15:30,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908551756] [2023-11-23 21:15:30,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:30,051 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 21:15:30,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:15:30,052 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/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 21:15:30,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44245da-a751-42a7-b31d-fb94e488873d/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 21:15:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:30,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-23 21:15:30,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:38,657 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 132 proven. 15 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-23 21:15:38,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:15:56,316 WARN L293 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 74 DAG size of output: 70 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)