./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/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_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/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_16192479-2541-4145-a304-145de32790bb/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 b6dd2ed6c1bce1a10f9a63c051c029a066fa5b3cc478546a4f140edcb3bcb50c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:17:18,771 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:17:18,859 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:17:18,867 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:17:18,868 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:17:18,900 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:17:18,901 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:17:18,902 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:17:18,903 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:17:18,904 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:17:18,904 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:17:18,905 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:17:18,906 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:17:18,907 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:17:18,907 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:17:18,908 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:17:18,909 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:17:18,910 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:17:18,910 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:17:18,911 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:17:18,912 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:17:18,913 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:17:18,914 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:17:18,915 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:17:18,916 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:17:18,917 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:17:18,917 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:17:18,918 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:17:18,919 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:17:18,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:17:18,920 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:17:18,921 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:17:18,922 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:17:18,922 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:17:18,923 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:17:18,924 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:17:18,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:17:18,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:18,925 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:17:18,926 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:17:18,926 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:17:18,927 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:17:18,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:17:18,927 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:17:18,928 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:17:18,928 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:17:18,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:17:18,929 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_16192479-2541-4145-a304-145de32790bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6dd2ed6c1bce1a10f9a63c051c029a066fa5b3cc478546a4f140edcb3bcb50c [2023-11-23 21:17:19,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:17:19,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:17:19,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:17:19,249 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:17:19,250 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:17:19,252 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i [2023-11-23 21:17:22,628 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:17:22,886 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:17:22,887 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i [2023-11-23 21:17:22,898 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/data/81cbbf13c/10fb7ef7d92d424089b24fa0450e155a/FLAGb365eb980 [2023-11-23 21:17:22,916 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/data/81cbbf13c/10fb7ef7d92d424089b24fa0450e155a [2023-11-23 21:17:22,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:17:22,922 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:17:22,924 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:22,924 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:17:22,931 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:17:22,932 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:22" (1/1) ... [2023-11-23 21:17:22,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dfb17b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:22, skipping insertion in model container [2023-11-23 21:17:22,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:22" (1/1) ... [2023-11-23 21:17:22,967 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:17:23,176 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i[915,928] [2023-11-23 21:17:23,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:23,245 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:17:23,262 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_16192479-2541-4145-a304-145de32790bb/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i[915,928] [2023-11-23 21:17:23,293 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:23,312 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:17:23,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:23 WrapperNode [2023-11-23 21:17:23,313 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:23,314 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:23,315 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:17:23,315 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:17:23,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:23" (1/1) ... [2023-11-23 21:17:23,336 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:23" (1/1) ... [2023-11-23 21:17:23,393 INFO L138 Inliner]: procedures = 26, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 123 [2023-11-23 21:17:23,394 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:23,395 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:17:23,395 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:17:23,395 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:17:23,407 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:23" (1/1) ... [2023-11-23 21:17:23,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:23" (1/1) ... [2023-11-23 21:17:23,419 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:23" (1/1) ... [2023-11-23 21:17:23,419 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:23" (1/1) ... [2023-11-23 21:17:23,433 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:23" (1/1) ... [2023-11-23 21:17:23,456 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:23" (1/1) ... [2023-11-23 21:17:23,460 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:23" (1/1) ... [2023-11-23 21:17:23,478 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:23" (1/1) ... [2023-11-23 21:17:23,483 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:17:23,485 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:17:23,485 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:17:23,485 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:17:23,486 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:23" (1/1) ... [2023-11-23 21:17:23,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:23,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:23,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:17:23,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:17:23,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:17:23,584 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:17:23,584 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:17:23,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:17:23,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:17:23,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:17:23,745 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:17:23,748 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:17:24,178 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:17:24,476 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:17:24,477 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:17:24,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:17:24 BoogieIcfgContainer [2023-11-23 21:17:24,479 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:17:24,483 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:17:24,483 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:17:24,487 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:17:24,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:17:22" (1/3) ... [2023-11-23 21:17:24,489 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4d2e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:17:24, skipping insertion in model container [2023-11-23 21:17:24,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:23" (2/3) ... [2023-11-23 21:17:24,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4d2e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:17:24, skipping insertion in model container [2023-11-23 21:17:24,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:17:24" (3/3) ... [2023-11-23 21:17:24,492 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-64.i [2023-11-23 21:17:24,518 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:17:24,518 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:17:24,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:17:24,595 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;@52bcf663, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:17:24,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:17:24,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 21:17:24,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-23 21:17:24,614 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:24,615 INFO L195 NwaCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:24,616 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:24,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:24,623 INFO L85 PathProgramCache]: Analyzing trace with hash -568488773, now seen corresponding path program 1 times [2023-11-23 21:17:24,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:24,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594752463] [2023-11-23 21:17:24,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:24,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:24,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:17:24,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [716975064] [2023-11-23 21:17:24,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:24,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:17:24,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:24,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:17:24,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:17:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:17:25,769 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:17:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:17:25,895 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:17:25,898 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:17:25,900 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:17:25,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:17:26,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:17:26,116 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:17:26,120 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:17:26,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:17:26 BoogieIcfgContainer [2023-11-23 21:17:26,185 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:17:26,185 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:17:26,185 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:17:26,186 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:17:26,186 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:17:24" (3/4) ... [2023-11-23 21:17:26,189 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:17:26,190 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:17:26,191 INFO L158 Benchmark]: Toolchain (without parser) took 3269.06ms. Allocated memory was 136.3MB in the beginning and 172.0MB in the end (delta: 35.7MB). Free memory was 89.7MB in the beginning and 97.8MB in the end (delta: -8.1MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2023-11-23 21:17:26,192 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 109.1MB. Free memory is still 61.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:17:26,192 INFO L158 Benchmark]: CACSL2BoogieTranslator took 389.76ms. Allocated memory is still 136.3MB. Free memory was 89.7MB in the beginning and 77.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:17:26,193 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.35ms. Allocated memory is still 136.3MB. Free memory was 77.6MB in the beginning and 74.4MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:17:26,194 INFO L158 Benchmark]: Boogie Preprocessor took 89.10ms. Allocated memory is still 136.3MB. Free memory was 74.4MB in the beginning and 72.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:17:26,195 INFO L158 Benchmark]: RCFGBuilder took 994.71ms. Allocated memory was 136.3MB in the beginning and 172.0MB in the end (delta: 35.7MB). Free memory was 72.3MB in the beginning and 127.1MB in the end (delta: -54.8MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2023-11-23 21:17:26,195 INFO L158 Benchmark]: TraceAbstraction took 1701.76ms. Allocated memory is still 172.0MB. Free memory was 126.1MB in the beginning and 98.8MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-23 21:17:26,196 INFO L158 Benchmark]: Witness Printer took 4.65ms. Allocated memory is still 172.0MB. Free memory was 98.8MB in the beginning and 97.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:17:26,200 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 109.1MB. Free memory is still 61.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 389.76ms. Allocated memory is still 136.3MB. Free memory was 89.7MB in the beginning and 77.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.35ms. Allocated memory is still 136.3MB. Free memory was 77.6MB in the beginning and 74.4MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 89.10ms. Allocated memory is still 136.3MB. Free memory was 74.4MB in the beginning and 72.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 994.71ms. Allocated memory was 136.3MB in the beginning and 172.0MB in the end (delta: 35.7MB). Free memory was 72.3MB in the beginning and 127.1MB in the end (delta: -54.8MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1701.76ms. Allocated memory is still 172.0MB. Free memory was 126.1MB in the beginning and 98.8MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 4.65ms. Allocated memory is still 172.0MB. Free memory was 98.8MB in the beginning and 97.8MB 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 someBinaryDOUBLEComparisonOperation at line 82, overapproximation of someBinaryFLOATComparisonOperation at line 82, overapproximation of bitwiseAnd at line 38. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] double var_1_1 = 0.9; [L23] unsigned long int var_1_3 = 2941876006; [L24] double var_1_5 = 127.422; [L25] unsigned short int var_1_6 = 10; [L26] unsigned char var_1_7 = 1; [L27] unsigned long int var_1_9 = 4; [L28] unsigned short int var_1_11 = 44699; [L29] signed short int var_1_13 = 2; [L30] unsigned char var_1_15 = 0; [L31] unsigned char var_1_16 = 16; [L32] float var_1_17 = 8.125; [L86] isInitial = 1 [L87] FCALL initially() [L88] int k_loop; [L89] k_loop = 0 VAL [isInitial=1, k_loop=0, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2941876006, var_1_5=63711/500, var_1_6=10, var_1_7=1, var_1_9=4] [L89] COND TRUE k_loop < 1 [L90] FCALL updateLastVariables() [L91] CALL updateVariables() [L60] var_1_3 = __VERIFIER_nondet_ulong() [L61] CALL assume_abort_if_not(var_1_3 >= 2147483647) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_5=63711/500, var_1_6=10, var_1_7=1, var_1_9=4] [L20] COND FALSE !(!cond) [L61] RET assume_abort_if_not(var_1_3 >= 2147483647) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_5=63711/500, var_1_6=10, var_1_7=1, var_1_9=4] [L62] CALL assume_abort_if_not(var_1_3 <= 4294967295) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_5=63711/500, var_1_6=10, var_1_7=1, var_1_9=4] [L20] COND FALSE !(!cond) [L62] RET assume_abort_if_not(var_1_3 <= 4294967295) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_5=63711/500, var_1_6=10, var_1_7=1, var_1_9=4] [L63] var_1_5 = __VERIFIER_nondet_double() [L64] CALL assume_abort_if_not((var_1_5 >= -922337.2036854765600e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_6=10, var_1_7=1, var_1_9=4] [L20] COND FALSE !(!cond) [L64] RET assume_abort_if_not((var_1_5 >= -922337.2036854765600e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_6=10, var_1_7=1, var_1_9=4] [L65] var_1_7 = __VERIFIER_nondet_uchar() [L66] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_6=10, var_1_9=4] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_6=10, var_1_9=4] [L67] CALL assume_abort_if_not(var_1_7 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_6=10, var_1_7=1, var_1_9=4] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not(var_1_7 <= 1) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_6=10, var_1_7=1, var_1_9=4] [L68] var_1_9 = __VERIFIER_nondet_ulong() [L69] CALL assume_abort_if_not(var_1_9 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_6=10, var_1_7=1] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_9 >= 0) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_6=10, var_1_7=1] [L70] CALL assume_abort_if_not(var_1_9 <= 4294967295) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_6=10, var_1_7=1] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_9 <= 4294967295) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_6=10, var_1_7=1] [L71] CALL assume_abort_if_not(var_1_9 != 0) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_6=10, var_1_7=1, var_1_9=4] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_9 != 0) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_6=10, var_1_7=1, var_1_9=4] [L72] var_1_11 = __VERIFIER_nondet_ushort() [L73] CALL assume_abort_if_not(var_1_11 >= 32767) VAL [\old(cond)=1, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_6=10, var_1_7=1, var_1_9=4] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_11 >= 32767) VAL [isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_6=10, var_1_7=1, var_1_9=4] [L74] CALL assume_abort_if_not(var_1_11 <= 65534) VAL [\old(cond)=1, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_6=10, var_1_7=1, var_1_9=4] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_11 <= 65534) VAL [isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_6=10, var_1_7=1, var_1_9=4] [L75] var_1_16 = __VERIFIER_nondet_uchar() [L76] CALL assume_abort_if_not(var_1_16 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_6=10, var_1_7=1, var_1_9=4] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_16 >= 0) VAL [isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_6=10, var_1_7=1, var_1_9=4] [L77] CALL assume_abort_if_not(var_1_16 <= 254) VAL [\old(cond)=1, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=3, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_6=10, var_1_7=1, var_1_9=4] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not(var_1_16 <= 254) VAL [isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=3, var_1_17=65/8, var_1_1=9/10, var_1_3=4294967294, var_1_6=10, var_1_7=1, var_1_9=4] [L91] RET updateVariables() [L92] CALL step() [L36] var_1_15 = var_1_16 [L37] var_1_17 = var_1_5 [L38] EXPR var_1_15 & var_1_15 [L38] unsigned long int stepLocal_2 = var_1_3 * (var_1_15 & var_1_15); [L39] COND TRUE \read(var_1_7) [L40] COND FALSE !(stepLocal_2 <= (var_1_15 / var_1_9)) [L43] var_1_6 = (var_1_11 - ((((var_1_15) < 0 ) ? -(var_1_15) : (var_1_15)))) [L48] var_1_13 = var_1_15 [L49] signed long int stepLocal_1 = var_1_6 * var_1_15; [L50] unsigned char stepLocal_0 = var_1_15; [L51] COND TRUE stepLocal_0 <= (var_1_3 - var_1_6) [L52] COND FALSE !(var_1_3 < stepLocal_1) [L55] var_1_1 = var_1_5 [L92] RET step() [L93] CALL, EXPR property() [L82] EXPR ((var_1_15 <= (var_1_3 - var_1_6)) ? ((var_1_3 < (var_1_6 * var_1_15)) ? (var_1_1 == ((double) var_1_5)) : (var_1_1 == ((double) var_1_5))) : 1) && (var_1_7 ? (((var_1_3 * (var_1_15 & var_1_15)) <= (var_1_15 / var_1_9)) ? (var_1_6 == ((unsigned short int) (47342 - var_1_15))) : (var_1_6 == ((unsigned short int) (var_1_11 - ((((var_1_15) < 0 ) ? -(var_1_15) : (var_1_15))))))) : (var_1_6 == ((unsigned short int) (((((var_1_15) > (var_1_15)) ? (var_1_15) : (var_1_15))) + 1)))) [L82] EXPR var_1_7 ? (((var_1_3 * (var_1_15 & var_1_15)) <= (var_1_15 / var_1_9)) ? (var_1_6 == ((unsigned short int) (47342 - var_1_15))) : (var_1_6 == ((unsigned short int) (var_1_11 - ((((var_1_15) < 0 ) ? -(var_1_15) : (var_1_15))))))) : (var_1_6 == ((unsigned short int) (((((var_1_15) > (var_1_15)) ? (var_1_15) : (var_1_15))) + 1))) [L82] EXPR var_1_15 & var_1_15 [L82] EXPR var_1_7 ? (((var_1_3 * (var_1_15 & var_1_15)) <= (var_1_15 / var_1_9)) ? (var_1_6 == ((unsigned short int) (47342 - var_1_15))) : (var_1_6 == ((unsigned short int) (var_1_11 - ((((var_1_15) < 0 ) ? -(var_1_15) : (var_1_15))))))) : (var_1_6 == ((unsigned short int) (((((var_1_15) > (var_1_15)) ? (var_1_15) : (var_1_15))) + 1))) [L82] EXPR ((var_1_15 <= (var_1_3 - var_1_6)) ? ((var_1_3 < (var_1_6 * var_1_15)) ? (var_1_1 == ((double) var_1_5)) : (var_1_1 == ((double) var_1_5))) : 1) && (var_1_7 ? (((var_1_3 * (var_1_15 & var_1_15)) <= (var_1_15 / var_1_9)) ? (var_1_6 == ((unsigned short int) (47342 - var_1_15))) : (var_1_6 == ((unsigned short int) (var_1_11 - ((((var_1_15) < 0 ) ? -(var_1_15) : (var_1_15))))))) : (var_1_6 == ((unsigned short int) (((((var_1_15) > (var_1_15)) ? (var_1_15) : (var_1_15))) + 1)))) [L82-L83] return (((((var_1_15 <= (var_1_3 - var_1_6)) ? ((var_1_3 < (var_1_6 * var_1_15)) ? (var_1_1 == ((double) var_1_5)) : (var_1_1 == ((double) var_1_5))) : 1) && (var_1_7 ? (((var_1_3 * (var_1_15 & var_1_15)) <= (var_1_15 / var_1_9)) ? (var_1_6 == ((unsigned short int) (47342 - var_1_15))) : (var_1_6 == ((unsigned short int) (var_1_11 - ((((var_1_15) < 0 ) ? -(var_1_15) : (var_1_15))))))) : (var_1_6 == ((unsigned short int) (((((var_1_15) > (var_1_15)) ? (var_1_15) : (var_1_15))) + 1))))) && (var_1_13 == ((signed short int) var_1_15))) && (var_1_15 == ((unsigned char) var_1_16))) && (var_1_17 == ((float) var_1_5)) ; [L93] RET, EXPR property() [L93] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_11=32767, var_1_13=3, var_1_15=3, var_1_16=3, var_1_17=2, var_1_1=2, var_1_3=4294967294, var_1_5=2, var_1_6=32764, var_1_7=1, var_1_9=4] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_11=32767, var_1_13=3, var_1_15=3, var_1_16=3, var_1_17=2, var_1_1=2, var_1_3=4294967294, var_1_5=2, var_1_6=32764, var_1_7=1, var_1_9=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 1, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 0.9s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 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 21:17:26,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/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_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/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_16192479-2541-4145-a304-145de32790bb/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 b6dd2ed6c1bce1a10f9a63c051c029a066fa5b3cc478546a4f140edcb3bcb50c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:17:28,966 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:17:29,102 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:17:29,113 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:17:29,114 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:17:29,167 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:17:29,168 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:17:29,169 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:17:29,170 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:17:29,177 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:17:29,177 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:17:29,178 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:17:29,179 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:17:29,181 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:17:29,182 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:17:29,182 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:17:29,184 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:17:29,184 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:17:29,185 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:17:29,187 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:17:29,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:17:29,188 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:17:29,189 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:17:29,190 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:17:29,190 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:17:29,191 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:17:29,192 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:17:29,192 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:17:29,193 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:17:29,193 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:17:29,195 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:17:29,196 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:17:29,196 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:17:29,197 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:17:29,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:29,197 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:17:29,198 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:17:29,198 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:17:29,198 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:17:29,200 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:17:29,200 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:17:29,201 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:17:29,201 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:17:29,201 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:17:29,202 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_16192479-2541-4145-a304-145de32790bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6dd2ed6c1bce1a10f9a63c051c029a066fa5b3cc478546a4f140edcb3bcb50c [2023-11-23 21:17:29,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:17:29,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:17:29,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:17:29,801 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:17:29,802 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:17:29,803 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i [2023-11-23 21:17:33,484 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:17:33,732 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:17:33,733 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i [2023-11-23 21:17:33,741 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/data/631938389/89878652193b44498d0231afc7a3c6d2/FLAG4312e47a8 [2023-11-23 21:17:33,754 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/data/631938389/89878652193b44498d0231afc7a3c6d2 [2023-11-23 21:17:33,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:17:33,758 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:17:33,760 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:33,760 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:17:33,765 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:17:33,766 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:33" (1/1) ... [2023-11-23 21:17:33,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f7ca2e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:33, skipping insertion in model container [2023-11-23 21:17:33,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:33" (1/1) ... [2023-11-23 21:17:33,793 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:17:33,948 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_16192479-2541-4145-a304-145de32790bb/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i[915,928] [2023-11-23 21:17:34,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:34,021 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:17:34,042 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_16192479-2541-4145-a304-145de32790bb/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-64.i[915,928] [2023-11-23 21:17:34,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:34,118 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:17:34,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34 WrapperNode [2023-11-23 21:17:34,118 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:34,120 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:34,120 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:17:34,120 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:17:34,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,153 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,194 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 95 [2023-11-23 21:17:34,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:34,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:17:34,197 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:17:34,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:17:34,207 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,222 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,223 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,238 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,249 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,253 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,265 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,269 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:17:34,273 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:17:34,274 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:17:34,274 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:17:34,275 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (1/1) ... [2023-11-23 21:17:34,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:34,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:34,312 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:17:34,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:17:34,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:17:34,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:17:34,357 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:17:34,357 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:17:34,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:17:34,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:17:34,480 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:17:34,484 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:17:35,424 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:17:35,480 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:17:35,480 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:17:35,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:17:35 BoogieIcfgContainer [2023-11-23 21:17:35,481 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:17:35,484 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:17:35,484 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:17:35,487 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:17:35,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:17:33" (1/3) ... [2023-11-23 21:17:35,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223acd8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:17:35, skipping insertion in model container [2023-11-23 21:17:35,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:34" (2/3) ... [2023-11-23 21:17:35,489 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223acd8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:17:35, skipping insertion in model container [2023-11-23 21:17:35,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:17:35" (3/3) ... [2023-11-23 21:17:35,490 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-64.i [2023-11-23 21:17:35,512 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:17:35,513 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:17:35,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:17:35,576 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;@44ef5f34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:17:35,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:17:35,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 21:17:35,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-23 21:17:35,595 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:35,596 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:35,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:35,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:35,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1111848029, now seen corresponding path program 1 times [2023-11-23 21:17:35,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:17:35,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292516186] [2023-11-23 21:17:35,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:35,627 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 21:17:35,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:17:35,634 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/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 21:17:35,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/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 21:17:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:35,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:17:35,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:35,974 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-23 21:17:35,975 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:17:35,976 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:17:35,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292516186] [2023-11-23 21:17:35,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292516186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:35,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:17:35,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:17:35,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721012438] [2023-11-23 21:17:35,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:35,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:17:35,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:17:36,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:17:36,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:17:36,028 INFO L87 Difference]: Start difference. First operand has 36 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 21:17:36,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:36,255 INFO L93 Difference]: Finished difference Result 71 states and 119 transitions. [2023-11-23 21:17:36,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:17:36,258 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 74 [2023-11-23 21:17:36,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:36,267 INFO L225 Difference]: With dead ends: 71 [2023-11-23 21:17:36,267 INFO L226 Difference]: Without dead ends: 34 [2023-11-23 21:17:36,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 73 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 21:17:36,278 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:36,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:17:36,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-23 21:17:36,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-11-23 21:17:36,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 21:17:36,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2023-11-23 21:17:36,345 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 74 [2023-11-23 21:17:36,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:36,346 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2023-11-23 21:17:36,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 21:17:36,346 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2023-11-23 21:17:36,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-23 21:17:36,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:36,353 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:36,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/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 21:17:36,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/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 21:17:36,560 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:36,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:36,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2048480803, now seen corresponding path program 1 times [2023-11-23 21:17:36,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:17:36,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148408509] [2023-11-23 21:17:36,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:36,563 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 21:17:36,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:17:36,565 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/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 21:17:36,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/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 21:17:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:36,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:17:36,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:37,380 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-23 21:17:37,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:17:37,546 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:17:37,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148408509] [2023-11-23 21:17:37,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148408509] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:17:37,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1717776353] [2023-11-23 21:17:37,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:37,553 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:17:37,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:17:37,559 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:17:37,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-23 21:17:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:38,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:17:38,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:38,676 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-23 21:17:38,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:17:38,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1717776353] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:17:38,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579400539] [2023-11-23 21:17:38,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:38,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:17:38,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:38,751 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:17:38,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:17:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:38,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:17:38,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-23 21:17:39,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:17:39,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579400539] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:17:39,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:17:39,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2023-11-23 21:17:39,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434642491] [2023-11-23 21:17:39,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:17:39,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:17:39,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:17:39,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:17:39,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:17:39,387 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 21:17:41,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:41,244 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2023-11-23 21:17:41,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:17:41,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 74 [2023-11-23 21:17:41,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:41,247 INFO L225 Difference]: With dead ends: 82 [2023-11-23 21:17:41,248 INFO L226 Difference]: Without dead ends: 49 [2023-11-23 21:17:41,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:17:41,250 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 31 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:41,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 63 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 21:17:41,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-23 21:17:41,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2023-11-23 21:17:41,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 21:17:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 51 transitions. [2023-11-23 21:17:41,265 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 51 transitions. Word has length 74 [2023-11-23 21:17:41,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:41,266 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 51 transitions. [2023-11-23 21:17:41,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 21:17:41,266 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions. [2023-11-23 21:17:41,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-23 21:17:41,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:41,268 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:41,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/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)] Ended with exit code 0 [2023-11-23 21:17:41,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:17:41,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:17:41,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:17:41,875 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:41,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:41,876 INFO L85 PathProgramCache]: Analyzing trace with hash -930907023, now seen corresponding path program 1 times [2023-11-23 21:17:41,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:17:41,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558541232] [2023-11-23 21:17:41,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:41,877 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 21:17:41,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:17:41,879 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/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 21:17:41,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/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 (6)] Waiting until timeout for monitored process [2023-11-23 21:17:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:42,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:17:42,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:42,551 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-23 21:17:42,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:17:42,847 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:17:42,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558541232] [2023-11-23 21:17:42,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558541232] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:17:42,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1787877614] [2023-11-23 21:17:42,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:42,849 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:17:42,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:17:42,850 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:17:42,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-23 21:17:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:43,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:17:43,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-23 21:17:43,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:17:43,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1787877614] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:17:43,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332811832] [2023-11-23 21:17:43,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:43,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:17:43,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:43,940 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:17:43,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 21:17:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:44,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:17:44,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:44,508 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-23 21:17:44,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:17:44,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332811832] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:17:44,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:17:44,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2023-11-23 21:17:44,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315873012] [2023-11-23 21:17:44,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:17:44,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:17:44,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:17:44,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:17:44,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:17:44,624 INFO L87 Difference]: Start difference. First operand 38 states and 51 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 21:17:46,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:46,884 INFO L93 Difference]: Finished difference Result 77 states and 103 transitions. [2023-11-23 21:17:46,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:17:46,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 75 [2023-11-23 21:17:46,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:46,888 INFO L225 Difference]: With dead ends: 77 [2023-11-23 21:17:46,888 INFO L226 Difference]: Without dead ends: 40 [2023-11-23 21:17:46,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:17:46,891 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:46,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 69 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-23 21:17:46,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-23 21:17:46,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2023-11-23 21:17:46,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 21:17:46,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2023-11-23 21:17:46,919 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 75 [2023-11-23 21:17:46,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:46,920 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2023-11-23 21:17:46,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 21:17:46,921 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2023-11-23 21:17:46,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-23 21:17:46,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:46,924 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:46,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/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 (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:17:47,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:17:47,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:17:47,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/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=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt [2023-11-23 21:17:47,532 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:47,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:47,533 INFO L85 PathProgramCache]: Analyzing trace with hash -930847441, now seen corresponding path program 1 times [2023-11-23 21:17:47,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:17:47,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056628439] [2023-11-23 21:17:47,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:47,534 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 21:17:47,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:17:47,536 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/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 21:17:47,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16192479-2541-4145-a304-145de32790bb/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 (9)] Waiting until timeout for monitored process [2023-11-23 21:17:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:47,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 21:17:47,715 INFO L285 TraceCheckSpWp]: Computing forward predicates...