./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-81.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/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_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/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_f959f51f-7594-49af-9d6b-904eb8e4a904/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 5057d6caf941992e771c1ecd13bfea36f973e8e9bf0cbce9da91139cce11df8f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:36:28,584 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:36:28,702 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 20:36:28,708 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:36:28,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:36:28,738 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:36:28,738 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:36:28,739 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:36:28,740 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:36:28,740 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:36:28,741 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:36:28,742 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:36:28,742 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:36:28,743 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:36:28,744 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:36:28,744 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:36:28,745 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:36:28,745 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:36:28,755 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:36:28,756 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:36:28,759 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:36:28,760 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:36:28,761 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:36:28,762 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:36:28,763 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:36:28,763 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:36:28,764 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:36:28,764 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:36:28,765 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:36:28,765 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:36:28,766 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:36:28,767 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:36:28,767 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:36:28,768 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:36:28,768 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:36:28,769 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:36:28,769 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:36:28,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:36:28,770 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:36:28,771 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:36:28,771 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:36:28,773 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:36:28,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:36:28,775 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:36:28,775 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:36:28,776 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:36:28,776 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:36:28,776 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_f959f51f-7594-49af-9d6b-904eb8e4a904/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5057d6caf941992e771c1ecd13bfea36f973e8e9bf0cbce9da91139cce11df8f [2023-11-23 20:36:29,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:36:29,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:36:29,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:36:29,194 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:36:29,194 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:36:29,196 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-81.i [2023-11-23 20:36:32,431 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:36:32,791 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:36:32,794 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-81.i [2023-11-23 20:36:32,808 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/data/345fcc5fa/c5e1b9b207b643b99e5094bae0f0b6e6/FLAGceb3ae5ef [2023-11-23 20:36:32,833 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/data/345fcc5fa/c5e1b9b207b643b99e5094bae0f0b6e6 [2023-11-23 20:36:32,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:36:32,844 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:36:32,847 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:36:32,847 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:36:32,854 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:36:32,857 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:36:32" (1/1) ... [2023-11-23 20:36:32,858 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29051d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:32, skipping insertion in model container [2023-11-23 20:36:32,859 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:36:32" (1/1) ... [2023-11-23 20:36:32,911 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:36:33,125 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_f959f51f-7594-49af-9d6b-904eb8e4a904/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-81.i[915,928] [2023-11-23 20:36:33,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:36:33,202 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:36:33,216 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_f959f51f-7594-49af-9d6b-904eb8e4a904/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-81.i[915,928] [2023-11-23 20:36:33,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:36:33,277 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:36:33,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:33 WrapperNode [2023-11-23 20:36:33,277 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:36:33,279 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:36:33,279 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:36:33,279 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:36:33,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:33" (1/1) ... [2023-11-23 20:36:33,297 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:33" (1/1) ... [2023-11-23 20:36:33,333 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 149 [2023-11-23 20:36:33,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:36:33,335 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:36:33,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:36:33,336 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:36:33,346 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:33" (1/1) ... [2023-11-23 20:36:33,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:33" (1/1) ... [2023-11-23 20:36:33,349 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:33" (1/1) ... [2023-11-23 20:36:33,350 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:33" (1/1) ... [2023-11-23 20:36:33,359 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:33" (1/1) ... [2023-11-23 20:36:33,365 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:33" (1/1) ... [2023-11-23 20:36:33,367 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:33" (1/1) ... [2023-11-23 20:36:33,369 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:33" (1/1) ... [2023-11-23 20:36:33,373 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:36:33,374 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:36:33,374 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:36:33,374 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:36:33,375 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:33" (1/1) ... [2023-11-23 20:36:33,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:36:33,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:36:33,411 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:36:33,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:36:33,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:36:33,451 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:36:33,451 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:36:33,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:36:33,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:36:33,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:36:33,535 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:36:33,537 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:36:33,850 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:36:34,097 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:36:34,098 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:36:34,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:36:34 BoogieIcfgContainer [2023-11-23 20:36:34,100 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:36:34,103 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:36:34,104 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:36:34,108 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:36:34,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:36:32" (1/3) ... [2023-11-23 20:36:34,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae8c738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:36:34, skipping insertion in model container [2023-11-23 20:36:34,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:33" (2/3) ... [2023-11-23 20:36:34,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae8c738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:36:34, skipping insertion in model container [2023-11-23 20:36:34,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:36:34" (3/3) ... [2023-11-23 20:36:34,112 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-81.i [2023-11-23 20:36:34,134 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:36:34,135 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:36:34,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:36:34,194 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;@4a1b0a98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:36:34,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:36:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 20:36:34,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 20:36:34,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:34,211 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:36:34,211 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:36:34,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:34,217 INFO L85 PathProgramCache]: Analyzing trace with hash -754314216, now seen corresponding path program 1 times [2023-11-23 20:36:34,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:34,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033018756] [2023-11-23 20:36:34,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:34,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:36:34,594 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:36:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:36:34,952 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 20:36:34,954 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 20:36:34,957 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 20:36:34,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:36:34,967 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 20:36:34,972 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 20:36:35,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:36:35 BoogieIcfgContainer [2023-11-23 20:36:35,076 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 20:36:35,080 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:36:35,080 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:36:35,081 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:36:35,081 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:36:34" (3/4) ... [2023-11-23 20:36:35,085 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:36:35,087 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:36:35,088 INFO L158 Benchmark]: Toolchain (without parser) took 2243.69ms. Allocated memory was 138.4MB in the beginning and 203.4MB in the end (delta: 65.0MB). Free memory was 77.4MB in the beginning and 158.1MB in the end (delta: -80.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:36:35,089 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 138.4MB. Free memory was 112.6MB in the beginning and 112.5MB in the end (delta: 77.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:36:35,091 INFO L158 Benchmark]: CACSL2BoogieTranslator took 431.20ms. Allocated memory was 138.4MB in the beginning and 203.4MB in the end (delta: 65.0MB). Free memory was 77.2MB in the beginning and 173.5MB in the end (delta: -96.3MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2023-11-23 20:36:35,092 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.85ms. Allocated memory is still 203.4MB. Free memory was 173.5MB in the beginning and 171.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:36:35,097 INFO L158 Benchmark]: Boogie Preprocessor took 38.04ms. Allocated memory is still 203.4MB. Free memory was 171.4MB in the beginning and 169.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:36:35,098 INFO L158 Benchmark]: RCFGBuilder took 726.20ms. Allocated memory is still 203.4MB. Free memory was 169.3MB in the beginning and 138.7MB in the end (delta: 30.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-23 20:36:35,099 INFO L158 Benchmark]: TraceAbstraction took 973.06ms. Allocated memory is still 203.4MB. Free memory was 137.8MB in the beginning and 158.1MB in the end (delta: -20.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-23 20:36:35,099 INFO L158 Benchmark]: Witness Printer took 6.83ms. Allocated memory is still 203.4MB. Free memory is still 158.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:36:35,108 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 138.4MB. Free memory was 112.6MB in the beginning and 112.5MB in the end (delta: 77.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 431.20ms. Allocated memory was 138.4MB in the beginning and 203.4MB in the end (delta: 65.0MB). Free memory was 77.2MB in the beginning and 173.5MB in the end (delta: -96.3MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.85ms. Allocated memory is still 203.4MB. Free memory was 173.5MB in the beginning and 171.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.04ms. Allocated memory is still 203.4MB. Free memory was 171.4MB in the beginning and 169.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 726.20ms. Allocated memory is still 203.4MB. Free memory was 169.3MB in the beginning and 138.7MB in the end (delta: 30.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 973.06ms. Allocated memory is still 203.4MB. Free memory was 137.8MB in the beginning and 158.1MB in the end (delta: -20.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 6.83ms. Allocated memory is still 203.4MB. Free memory is still 158.1MB. 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 60, overapproximation of bitwiseOr at line 62, overapproximation of someBinaryArithmeticDOUBLEoperation at line 60. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] double var_1_1 = 9999.5; [L23] unsigned char var_1_2 = 1; [L24] double var_1_3 = 4.5; [L25] double var_1_4 = 2.5; [L26] double var_1_5 = 0.0; [L27] double var_1_6 = 999999999999.3; [L28] signed char var_1_7 = -128; [L29] signed char var_1_11 = -64; [L30] signed char var_1_12 = 5; [L31] signed char var_1_13 = 50; [L32] unsigned char var_1_14 = 0; [L33] unsigned char var_1_15 = 0; [L34] unsigned char var_1_16 = 0; [L35] unsigned char var_1_17 = 0; [L36] signed char last_1_var_1_7 = -128; [L107] isInitial = 1 [L108] FCALL initially() [L109] COND TRUE 1 [L110] CALL updateLastVariables() [L100] last_1_var_1_7 = var_1_7 [L110] RET updateLastVariables() [L111] CALL updateVariables() [L72] var_1_2 = __VERIFIER_nondet_uchar() [L73] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_3=9/2, var_1_4=5/2, var_1_5=0, var_1_6=9999999999993/10, var_1_7=-128] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_3=9/2, var_1_4=5/2, var_1_5=0, var_1_6=9999999999993/10, var_1_7=-128] [L74] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_3=9/2, var_1_4=5/2, var_1_5=0, var_1_6=9999999999993/10, var_1_7=-128] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_3=9/2, var_1_4=5/2, var_1_5=0, var_1_6=9999999999993/10, var_1_7=-128] [L75] var_1_3 = __VERIFIER_nondet_double() [L76] CALL assume_abort_if_not((var_1_3 >= -922337.2036854765600e+13F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854765600e+12F && var_1_3 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_4=5/2, var_1_5=0, var_1_6=9999999999993/10, var_1_7=-128] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not((var_1_3 >= -922337.2036854765600e+13F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854765600e+12F && var_1_3 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_4=5/2, var_1_5=0, var_1_6=9999999999993/10, var_1_7=-128] [L77] var_1_4 = __VERIFIER_nondet_double() [L78] CALL assume_abort_if_not((var_1_4 >= 0.0F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 9223372.036854765600e+12F && var_1_4 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_5=0, var_1_6=9999999999993/10, var_1_7=-128] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not((var_1_4 >= 0.0F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 9223372.036854765600e+12F && var_1_4 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_5=0, var_1_6=9999999999993/10, var_1_7=-128] [L79] var_1_5 = __VERIFIER_nondet_double() [L80] CALL assume_abort_if_not((var_1_5 >= 4611686.018427382800e+12F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_6=9999999999993/10, var_1_7=-128] [L20] COND FALSE !(!cond) [L80] RET assume_abort_if_not((var_1_5 >= 4611686.018427382800e+12F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_6=9999999999993/10, var_1_7=-128] [L81] var_1_6 = __VERIFIER_nondet_double() [L82] CALL assume_abort_if_not((var_1_6 >= 0.0F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 4611686.018427382800e+12F && var_1_6 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not((var_1_6 >= 0.0F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 4611686.018427382800e+12F && var_1_6 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=-64, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L83] var_1_11 = __VERIFIER_nondet_char() [L84] CALL assume_abort_if_not(var_1_11 >= -127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(var_1_11 >= -127) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L85] CALL assume_abort_if_not(var_1_11 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not(var_1_11 <= 126) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=5, var_1_13=50, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L86] var_1_13 = __VERIFIER_nondet_char() [L87] CALL assume_abort_if_not(var_1_13 >= -1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L87] RET assume_abort_if_not(var_1_13 >= -1) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L88] CALL assume_abort_if_not(var_1_13 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L88] RET assume_abort_if_not(var_1_13 <= 126) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L89] var_1_15 = __VERIFIER_nondet_uchar() [L90] CALL assume_abort_if_not(var_1_15 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L90] RET assume_abort_if_not(var_1_15 >= 0) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L91] CALL assume_abort_if_not(var_1_15 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=1, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L91] RET assume_abort_if_not(var_1_15 <= 1) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=1, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L92] var_1_16 = __VERIFIER_nondet_uchar() [L93] CALL assume_abort_if_not(var_1_16 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=1, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L93] RET assume_abort_if_not(var_1_16 >= 0) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=1, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L94] CALL assume_abort_if_not(var_1_16 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=1, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L94] RET assume_abort_if_not(var_1_16 <= 0) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=1, var_1_16=0, var_1_17=0, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L95] var_1_17 = __VERIFIER_nondet_uchar() [L96] CALL assume_abort_if_not(var_1_17 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=1, var_1_16=0, var_1_17=1, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L96] RET assume_abort_if_not(var_1_17 >= 1) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=1, var_1_16=0, var_1_17=1, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L97] CALL assume_abort_if_not(var_1_17 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=1, var_1_16=0, var_1_17=1, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L20] COND FALSE !(!cond) [L97] RET assume_abort_if_not(var_1_17 <= 1) VAL [isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=5, var_1_13=-1, var_1_14=0, var_1_15=1, var_1_16=0, var_1_17=1, var_1_1=19999/2, var_1_2=0, var_1_7=-128] [L111] RET updateVariables() [L112] CALL step() [L40] signed long int stepLocal_1 = ((((last_1_var_1_7) < (last_1_var_1_7)) ? (last_1_var_1_7) : (last_1_var_1_7))) + last_1_var_1_7; [L41] COND FALSE !(last_1_var_1_7 <= stepLocal_1) [L44] var_1_12 = var_1_11 [L46] unsigned char stepLocal_3 = var_1_2; [L47] unsigned long int stepLocal_2 = (((25u) > (var_1_12)) ? (25u) : (var_1_12)); [L48] COND TRUE stepLocal_3 || var_1_15 [L49] COND TRUE stepLocal_2 <= var_1_12 [L50] COND FALSE !(\read(var_1_2)) [L53] var_1_14 = var_1_17 [L59] COND TRUE \read(var_1_14) [L60] var_1_1 = ((((var_1_3) > ((var_1_4 - (var_1_5 - var_1_6)))) ? (var_1_3) : ((var_1_4 - (var_1_5 - var_1_6))))) [L62] EXPR var_1_12 ^ var_1_12 [L62] signed long int stepLocal_0 = var_1_12 ^ var_1_12; [L63] COND TRUE ((((-25) < (var_1_12)) ? (-25) : (var_1_12))) != stepLocal_0 [L64] COND TRUE \read(var_1_14) [L65] var_1_7 = var_1_11 [L112] RET step() [L113] CALL, EXPR property() [L103] EXPR (var_1_14 ? (var_1_1 == ((double) ((((var_1_3) > ((var_1_4 - (var_1_5 - var_1_6)))) ? (var_1_3) : ((var_1_4 - (var_1_5 - var_1_6))))))) : 1) && ((((((-25) < (var_1_12)) ? (-25) : (var_1_12))) != (var_1_12 ^ var_1_12)) ? (var_1_14 ? (var_1_7 == ((signed char) var_1_11)) : 1) : (var_1_7 == ((signed char) var_1_11))) [L103-L104] return (((var_1_14 ? (var_1_1 == ((double) ((((var_1_3) > ((var_1_4 - (var_1_5 - var_1_6)))) ? (var_1_3) : ((var_1_4 - (var_1_5 - var_1_6))))))) : 1) && ((((((-25) < (var_1_12)) ? (-25) : (var_1_12))) != (var_1_12 ^ var_1_12)) ? (var_1_14 ? (var_1_7 == ((signed char) var_1_11)) : 1) : (var_1_7 == ((signed char) var_1_11)))) && ((last_1_var_1_7 <= (((((last_1_var_1_7) < (last_1_var_1_7)) ? (last_1_var_1_7) : (last_1_var_1_7))) + last_1_var_1_7)) ? (var_1_12 == ((signed char) (var_1_13 - 1))) : (var_1_12 == ((signed char) var_1_11)))) && ((var_1_2 || var_1_15) ? ((((((25u) > (var_1_12)) ? (25u) : (var_1_12))) <= var_1_12) ? (var_1_2 ? (var_1_14 == ((unsigned char) var_1_16)) : (var_1_14 == ((unsigned char) var_1_17))) : 1) : (var_1_14 == ((unsigned char) var_1_16))) ; [L113] RET, EXPR property() [L113] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=126, var_1_13=-1, var_1_14=1, var_1_15=1, var_1_16=0, var_1_17=1, var_1_1=19999/2, var_1_2=0, var_1_3=19999/2, var_1_7=126] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_7=-128, var_1_11=126, var_1_12=126, var_1_13=-1, var_1_14=1, var_1_15=1, var_1_16=0, var_1_17=1, var_1_1=19999/2, var_1_2=0, var_1_3=19999/2, var_1_7=126] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 16, 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=35occurred 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, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 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 20:36:35,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/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_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/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_f959f51f-7594-49af-9d6b-904eb8e4a904/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 5057d6caf941992e771c1ecd13bfea36f973e8e9bf0cbce9da91139cce11df8f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:36:37,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:36:38,132 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 20:36:38,142 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:36:38,143 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:36:38,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:36:38,184 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:36:38,185 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:36:38,186 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:36:38,191 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:36:38,191 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:36:38,192 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:36:38,192 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:36:38,194 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:36:38,195 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:36:38,195 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:36:38,196 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:36:38,197 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:36:38,197 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:36:38,199 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:36:38,199 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:36:38,200 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:36:38,200 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:36:38,200 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:36:38,201 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:36:38,201 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:36:38,202 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:36:38,202 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:36:38,202 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:36:38,203 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:36:38,204 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:36:38,205 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 20:36:38,205 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:36:38,205 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:36:38,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:36:38,206 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:36:38,206 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:36:38,206 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:36:38,207 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:36:38,208 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:36:38,208 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:36:38,208 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:36:38,209 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:36:38,209 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:36:38,209 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_f959f51f-7594-49af-9d6b-904eb8e4a904/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5057d6caf941992e771c1ecd13bfea36f973e8e9bf0cbce9da91139cce11df8f [2023-11-23 20:36:38,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:36:38,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:36:38,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:36:38,711 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:36:38,712 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:36:38,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-81.i [2023-11-23 20:36:42,111 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:36:42,374 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:36:42,376 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-81.i [2023-11-23 20:36:42,386 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/data/4f1fa7410/716b6ac581b94494be8d854f3d48d714/FLAG1966a0b88 [2023-11-23 20:36:42,407 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/data/4f1fa7410/716b6ac581b94494be8d854f3d48d714 [2023-11-23 20:36:42,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:36:42,415 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:36:42,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:36:42,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:36:42,425 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:36:42,426 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:36:42" (1/1) ... [2023-11-23 20:36:42,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3efda0e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:42, skipping insertion in model container [2023-11-23 20:36:42,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:36:42" (1/1) ... [2023-11-23 20:36:42,473 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:36:42,682 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_f959f51f-7594-49af-9d6b-904eb8e4a904/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-81.i[915,928] [2023-11-23 20:36:42,762 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:36:42,779 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:36:42,791 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_f959f51f-7594-49af-9d6b-904eb8e4a904/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-81.i[915,928] [2023-11-23 20:36:42,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:36:42,836 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:36:42,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:42 WrapperNode [2023-11-23 20:36:42,837 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:36:42,838 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:36:42,838 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:36:42,838 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:36:42,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:42" (1/1) ... [2023-11-23 20:36:42,861 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:42" (1/1) ... [2023-11-23 20:36:42,890 INFO L138 Inliner]: procedures = 27, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 115 [2023-11-23 20:36:42,891 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:36:42,892 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:36:42,892 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:36:42,892 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:36:42,902 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:42" (1/1) ... [2023-11-23 20:36:42,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:42" (1/1) ... [2023-11-23 20:36:42,907 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:42" (1/1) ... [2023-11-23 20:36:42,908 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:42" (1/1) ... [2023-11-23 20:36:42,921 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:42" (1/1) ... [2023-11-23 20:36:42,925 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:42" (1/1) ... [2023-11-23 20:36:42,928 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:42" (1/1) ... [2023-11-23 20:36:42,930 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:42" (1/1) ... [2023-11-23 20:36:42,936 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:36:42,937 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:36:42,938 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:36:42,938 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:36:42,939 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:42" (1/1) ... [2023-11-23 20:36:42,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:36:42,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:36:42,972 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:36:42,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:36:43,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:36:43,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:36:43,006 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:36:43,006 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:36:43,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:36:43,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:36:43,105 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:36:43,108 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:36:45,741 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:36:45,784 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:36:45,785 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:36:45,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:36:45 BoogieIcfgContainer [2023-11-23 20:36:45,785 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:36:45,788 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:36:45,788 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:36:45,791 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:36:45,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:36:42" (1/3) ... [2023-11-23 20:36:45,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600284e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:36:45, skipping insertion in model container [2023-11-23 20:36:45,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:42" (2/3) ... [2023-11-23 20:36:45,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600284e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:36:45, skipping insertion in model container [2023-11-23 20:36:45,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:36:45" (3/3) ... [2023-11-23 20:36:45,795 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-81.i [2023-11-23 20:36:45,815 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:36:45,815 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:36:45,867 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:36:45,874 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;@64a5edc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:36:45,874 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:36:45,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 30 states have internal predecessors, (41), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 20:36:45,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-23 20:36:45,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:45,895 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:36:45,896 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:36:45,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:45,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2050707798, now seen corresponding path program 1 times [2023-11-23 20:36:45,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:36:45,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035275908] [2023-11-23 20:36:45,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:45,923 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 20:36:45,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:36:45,930 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/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 20:36:45,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/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 20:36:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:46,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 20:36:46,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:36:47,067 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-23 20:36:47,067 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:36:47,068 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:36:47,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035275908] [2023-11-23 20:36:47,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035275908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:36:47,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:36:47,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:36:47,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649628755] [2023-11-23 20:36:47,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:36:47,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:36:47,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:36:47,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:36:47,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:36:47,132 INFO L87 Difference]: Start difference. First operand has 48 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 30 states have internal predecessors, (41), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 20:36:50,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:36:50,083 INFO L93 Difference]: Finished difference Result 144 states and 256 transitions. [2023-11-23 20:36:50,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:36:50,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 101 [2023-11-23 20:36:50,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:36:50,110 INFO L225 Difference]: With dead ends: 144 [2023-11-23 20:36:50,110 INFO L226 Difference]: Without dead ends: 97 [2023-11-23 20:36:50,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:36:50,118 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 67 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-23 20:36:50,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 212 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-23 20:36:50,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-23 20:36:50,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 89. [2023-11-23 20:36:50,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 54 states have internal predecessors, (69), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 20:36:50,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 133 transitions. [2023-11-23 20:36:50,187 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 133 transitions. Word has length 101 [2023-11-23 20:36:50,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:36:50,189 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 133 transitions. [2023-11-23 20:36:50,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 20:36:50,189 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 133 transitions. [2023-11-23 20:36:50,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-23 20:36:50,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:50,195 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:36:50,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/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 20:36:50,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/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 20:36:50,413 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:36:50,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:50,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1370649428, now seen corresponding path program 1 times [2023-11-23 20:36:50,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:36:50,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981564034] [2023-11-23 20:36:50,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:50,416 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 20:36:50,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:36:50,443 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/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 20:36:50,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/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 20:36:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:50,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:36:50,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:36:50,951 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 145 proven. 6 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2023-11-23 20:36:50,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:36:51,293 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 39 proven. 6 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-23 20:36:51,294 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:36:51,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981564034] [2023-11-23 20:36:51,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981564034] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:36:51,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1378948535] [2023-11-23 20:36:51,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:51,296 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:36:51,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 20:36:51,302 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:36:51,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-23 20:36:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:52,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 20:36:52,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:36:52,123 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-23 20:36:52,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:36:52,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1378948535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:36:52,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 20:36:52,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 9 [2023-11-23 20:36:52,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845939283] [2023-11-23 20:36:52,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:36:52,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:36:52,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:36:52,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:36:52,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:36:52,130 INFO L87 Difference]: Start difference. First operand 89 states and 133 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 20:36:53,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 20:36:53,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:36:53,838 INFO L93 Difference]: Finished difference Result 134 states and 200 transitions. [2023-11-23 20:36:53,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:36:53,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 101 [2023-11-23 20:36:53,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:36:53,841 INFO L225 Difference]: With dead ends: 134 [2023-11-23 20:36:53,842 INFO L226 Difference]: Without dead ends: 89 [2023-11-23 20:36:53,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:36:53,845 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 3 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 20:36:53,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 117 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 20:36:53,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-23 20:36:53,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-11-23 20:36:53,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 54 states have internal predecessors, (67), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 20:36:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 131 transitions. [2023-11-23 20:36:53,870 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 131 transitions. Word has length 101 [2023-11-23 20:36:53,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:36:53,872 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 131 transitions. [2023-11-23 20:36:53,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 20:36:53,872 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 131 transitions. [2023-11-23 20:36:53,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-23 20:36:53,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:53,875 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:36:53,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-23 20:36:54,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-23 20:36:54,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/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_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt [2023-11-23 20:36:54,292 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:36:54,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:54,293 INFO L85 PathProgramCache]: Analyzing trace with hash 450065264, now seen corresponding path program 1 times [2023-11-23 20:36:54,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:36:54,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387183384] [2023-11-23 20:36:54,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:54,294 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 20:36:54,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:36:54,295 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/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 20:36:54,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-23 20:36:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:54,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:36:54,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:36:54,735 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 145 proven. 6 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2023-11-23 20:36:54,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:36:54,996 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 39 proven. 6 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-23 20:36:54,996 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:36:54,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387183384] [2023-11-23 20:36:54,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387183384] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:36:54,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1124462821] [2023-11-23 20:36:54,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:54,997 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:36:54,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 20:36:55,003 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:36:55,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-11-23 20:36:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:55,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 20:36:55,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:36:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 145 proven. 6 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2023-11-23 20:36:55,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:36:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 39 proven. 6 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-23 20:36:56,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1124462821] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:36:56,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79545641] [2023-11-23 20:36:56,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:56,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:36:56,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:36:56,104 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:36:56,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 20:36:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:56,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:36:56,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:36:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 145 proven. 6 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2023-11-23 20:36:56,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:36:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 39 proven. 6 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-23 20:36:56,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79545641] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:36:56,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-23 20:36:56,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 8 [2023-11-23 20:36:56,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327194553] [2023-11-23 20:36:56,599 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-23 20:36:56,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 20:36:56,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:36:56,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 20:36:56,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:36:56,602 INFO L87 Difference]: Start difference. First operand 89 states and 131 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 20:37:00,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:00,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:00,468 INFO L93 Difference]: Finished difference Result 250 states and 354 transitions. [2023-11-23 20:37:00,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 20:37:00,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 102 [2023-11-23 20:37:00,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:00,472 INFO L225 Difference]: With dead ends: 250 [2023-11-23 20:37:00,473 INFO L226 Difference]: Without dead ends: 162 [2023-11-23 20:37:00,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 598 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-11-23 20:37:00,476 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 115 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:00,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 134 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-23 20:37:00,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-23 20:37:00,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 147. [2023-11-23 20:37:00,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 92 states have (on average 1.184782608695652) internal successors, (109), 92 states have internal predecessors, (109), 48 states have call successors, (48), 6 states have call predecessors, (48), 6 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-23 20:37:00,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 205 transitions. [2023-11-23 20:37:00,521 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 205 transitions. Word has length 102 [2023-11-23 20:37:00,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:00,522 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 205 transitions. [2023-11-23 20:37:00,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 20:37:00,523 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 205 transitions. [2023-11-23 20:37:00,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-23 20:37:00,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:00,528 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:37:00,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-23 20:37:00,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 20:37:00,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-11-23 20:37:01,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/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=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt [2023-11-23 20:37:01,130 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:37:01,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:01,131 INFO L85 PathProgramCache]: Analyzing trace with hash -2069835088, now seen corresponding path program 1 times [2023-11-23 20:37:01,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:37:01,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012736399] [2023-11-23 20:37:01,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:01,132 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 20:37:01,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:37:01,133 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/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 20:37:01,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f959f51f-7594-49af-9d6b-904eb8e4a904/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)] Waiting until timeout for monitored process [2023-11-23 20:37:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:01,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 20:37:01,382 INFO L285 TraceCheckSpWp]: Computing forward predicates...